health advisories for middle and lower bolton lakes
The links below reference recent postings about our lakes from the local health districts. The summary is that both lakes are experiencing Category 2/3 algae blooms based on observing the lakes. Please, no swimming, and keep your pets out of the water. Please avoid skin contact with the water when boating and fishing. If fishing, catch and release is recommended.
MBL advisory
LBL advisory
MBL advisory
LBL advisory
FALL LAKE DRAWDOWN
DEEP has informed FBL that the drawdown this fall will begin on or about November 1, 2021. This date is consistent with prior years’ drawdowns.
Please note important topics
Hatch Hill Dam Reconstruction Project
The Department of Energy & Environmental Protection (DEEP) has informed Friends of Bolton Lakes (FBL) that the dam reconstruction project will not proceed during the fall 2021 as planned. The delay was caused by recent legislation that required additional contract language be added to all state contracts as of June 1, 2021. The contract that was awarded had to be revised to include the new language and then be approved by the state Attorney General’s Office and the DEEP legal team. A new start date has not been determined.
Middle and Lower Bolton Lakes Water Quality
FBL has been closely monitoring the lakes’ water quality conditions throughout the year. We have been coordinating with the towns, the lakes’ limnological consultants, the lower lake commissioner and the health departments. Water testing is an ongoing effort by FBL’s volunteer science committee. In addition to bimonthly testing, they have collected samples for cyanobacteria cell counts when conditions warranted. Cyanobacteria, E. coli measurements, and the appearance of surface scum continue to be evaluated to determine if remediation is necessary and when the waters are safe for humans or animals. The town’s limnologists investigated surface blooms and water clarity on both lakes this week.
The Department of Energy & Environmental Protection (DEEP) has informed Friends of Bolton Lakes (FBL) that the dam reconstruction project will not proceed during the fall 2021 as planned. The delay was caused by recent legislation that required additional contract language be added to all state contracts as of June 1, 2021. The contract that was awarded had to be revised to include the new language and then be approved by the state Attorney General’s Office and the DEEP legal team. A new start date has not been determined.
Middle and Lower Bolton Lakes Water Quality
FBL has been closely monitoring the lakes’ water quality conditions throughout the year. We have been coordinating with the towns, the lakes’ limnological consultants, the lower lake commissioner and the health departments. Water testing is an ongoing effort by FBL’s volunteer science committee. In addition to bimonthly testing, they have collected samples for cyanobacteria cell counts when conditions warranted. Cyanobacteria, E. coli measurements, and the appearance of surface scum continue to be evaluated to determine if remediation is necessary and when the waters are safe for humans or animals. The town’s limnologists investigated surface blooms and water clarity on both lakes this week.
Lower Bolton Lake restrictions rescinded - 9/23
September 23rd the town of Bolton published a bulletin from the Eastern Highlands Health District. After visiting the lake again, the EHHD rescinded all the restrictions applied earlier in the week to Lower Bolton Lake.
Tuesday a member of FBL and the Bolton Lake Commissioner, Kim Welch, took a water sample from Lower Bolton Lake to the office of Northeast Aquatic Research for testing. The cell count showed that the level of cyanobacteria was well below the unsafe limit.
Nevertheless, common sense should always be applied. If there are visible signs of algae on the surface of the water, avoid swimming and letting your pet(s) play in the water. And, as always, report any sightings using the Suspicious Plant Reporting Tool on the FBL website.
Link to notice
Tuesday a member of FBL and the Bolton Lake Commissioner, Kim Welch, took a water sample from Lower Bolton Lake to the office of Northeast Aquatic Research for testing. The cell count showed that the level of cyanobacteria was well below the unsafe limit.
Nevertheless, common sense should always be applied. If there are visible signs of algae on the surface of the water, avoid swimming and letting your pet(s) play in the water. And, as always, report any sightings using the Suspicious Plant Reporting Tool on the FBL website.
Link to notice
lower bolton lake is closed - 9/21 - algae bloom
Please see the notice regarding the closing of Lower Bolton Lake due to an algae bloom. Stay safe.
Link to notice.
Link to notice.
lower bolton lake conditions and concerns as of 8/26
Please read the note below from Kim Welch, the Bolton Lake Commissioner. Middle Bolton Lake has been experiencing increased algae activity but so far it has not been at the level Lower Bolton Lake has seen.
Lower Bolton Lake Cyanobacteria Update
Bolton Lake Residents, Friends and Neighbors,
The excessive rain and its runoff into the lake, high temperatures and calm water are likely contributing to this season's early and extended algal bloom.
Lower Bolton Lake(LBL): This week’s LBL water sample cyanobacteria cell count results are high, but not high enough for an official health alert, so I am writing this to make you aware of the current conditions and the associated concerns you need to be aware of. Two water samples were collected 8/25/21 and the cyanobacteria cell counts are 77k and 62k. The threshold for a formal health alert is 100k.
Cyanobacteria, aka blue green algae, creates toxins that are deadly for dogs and can be harmful to humans resulting in skin rash, respiratory and GI issues. Please keep dogs out of the water while this algae is present and limit human exposure to avoid the above mentioned health issues.
Educate yourself. Use these links so you can be aware of the concerns the current LBL water conditions produce. For additional facts about cyanobacteria blooms:
From the CT DPH:
https://portal.ct.gov/DPH/Environmental-Health/Environmental-Health-Section/Blue-Green-Algae-Blooms
From the CDC, which suggests, when in doubt, it's best to stay out!
https://www.cdc.gov/habs/pdf/cyanobacteria_faq.pdf
Many thanks to several lake residents and visitors that have shared their concerns with me about the current water conditions. Your concerns are being heard. There are volunteers and lake experts watching the conditions closely and assisting us with water sample collection and analysis, I want to thank them as well.
Regards
Kim Welch
Bolton Lake Commissioner
lake@boltonct.org
Lower Bolton Lake Cyanobacteria Update
Bolton Lake Residents, Friends and Neighbors,
The excessive rain and its runoff into the lake, high temperatures and calm water are likely contributing to this season's early and extended algal bloom.
Lower Bolton Lake(LBL): This week’s LBL water sample cyanobacteria cell count results are high, but not high enough for an official health alert, so I am writing this to make you aware of the current conditions and the associated concerns you need to be aware of. Two water samples were collected 8/25/21 and the cyanobacteria cell counts are 77k and 62k. The threshold for a formal health alert is 100k.
Cyanobacteria, aka blue green algae, creates toxins that are deadly for dogs and can be harmful to humans resulting in skin rash, respiratory and GI issues. Please keep dogs out of the water while this algae is present and limit human exposure to avoid the above mentioned health issues.
Educate yourself. Use these links so you can be aware of the concerns the current LBL water conditions produce. For additional facts about cyanobacteria blooms:
From the CT DPH:
https://portal.ct.gov/DPH/Environmental-Health/Environmental-Health-Section/Blue-Green-Algae-Blooms
From the CDC, which suggests, when in doubt, it's best to stay out!
https://www.cdc.gov/habs/pdf/cyanobacteria_faq.pdf
Many thanks to several lake residents and visitors that have shared their concerns with me about the current water conditions. Your concerns are being heard. There are volunteers and lake experts watching the conditions closely and assisting us with water sample collection and analysis, I want to thank them as well.
Regards
Kim Welch
Bolton Lake Commissioner
lake@boltonct.org
Middle bolton lake received milfoil and fanwort treatment 8/25
Middle Bolton Lake was treated for milfoil and fanwort on Wednesday, 8/25 around noon. The company Solitude did the treatment and posted restrictions at the boat launch. The use restrictions are:
Irrigation: 5 days
Drinking: 3 days
Livestock Watering: 1 day
Swimming, Fishing, Boating, etc.: no restrictions
The treatment areas were mainly on the northwest side of the lake starting at the boat launch and going about halfway down the western side.
Thank you to everyone who reported invasive species this summer.
FBL, Board of Directors
Irrigation: 5 days
Drinking: 3 days
Livestock Watering: 1 day
Swimming, Fishing, Boating, etc.: no restrictions
The treatment areas were mainly on the northwest side of the lake starting at the boat launch and going about halfway down the western side.
Thank you to everyone who reported invasive species this summer.
FBL, Board of Directors
DEEP and DPH Advise Against Swimming or Other Water Contact Recreation up to and including Wednesday 8/25 Due to Tropical Storm Henri's Impact
In a press release issued on Sunday, August 22, the Connecticut’s environmental and public health officials state:
“Given the significant rainfall that occurred (and is still expected) due to Tropical Storm Henri, many areas across the state have experienced discharges of untreated sewage. The Connecticut Department of Energy and Environmental Protection (DEEP) and the Connecticut Department of Public Health (DPH) are advising against direct contact with surface water in areas in close proximity to drainage pipes statewide, particularly in urban areas such as Bridgeport, Hartford, Norwalk, Norwich, and the greater New Haven area over the next 72 hours in Connecticut’s streams and rivers. Residents are advised not to swim, fish, or utilize paddlecraft in these areas.”
Although the press release refers to urban areas, after speaking with the North Central Health District, we thought it prudent to provide this information out of an abundance of caution, the large drainage area of the lakes, the presence of agriculture nearby, and recent water quality issues in the lakes.
Since the press release was issued Sunday, this advice would apply up to and including Wednesday August 25th.
“Given the significant rainfall that occurred (and is still expected) due to Tropical Storm Henri, many areas across the state have experienced discharges of untreated sewage. The Connecticut Department of Energy and Environmental Protection (DEEP) and the Connecticut Department of Public Health (DPH) are advising against direct contact with surface water in areas in close proximity to drainage pipes statewide, particularly in urban areas such as Bridgeport, Hartford, Norwalk, Norwich, and the greater New Haven area over the next 72 hours in Connecticut’s streams and rivers. Residents are advised not to swim, fish, or utilize paddlecraft in these areas.”
Although the press release refers to urban areas, after speaking with the North Central Health District, we thought it prudent to provide this information out of an abundance of caution, the large drainage area of the lakes, the presence of agriculture nearby, and recent water quality issues in the lakes.
Since the press release was issued Sunday, this advice would apply up to and including Wednesday August 25th.
Lower Bolton Lake Cyanobacteria Update - lake is open - 8/12/21
Lower Bolton Lake(LBL): This week’s Lower Bolton Lake water sample cell count results are our second result below the threshold of the DPH/DEEP cyanobacteria guidelines. Therefore, the lake is safe for swimming effective 8/12/21. Indian Notch Park will open on Saturday 8/14/21. Water conditions can change abruptly, monitoring will continue for the remainder of the summer season. Please avoid contact with blue/green algae scum and particles that may appear on the water’s surface. For up to date information please visit town.boltonct.org.
Regards
Kim Welch
Bolton Lake Commissioner
lake@boltonct.org
Regards
Kim Welch
Bolton Lake Commissioner
lake@boltonct.org
MBL and LBL updates 8/10/21
Middle Lake Update:
There will be a treatment for fanwort on the Middle Lake this week. There has been a substantial amount of fanwort located near the boat launch and one spot on the southwest shoreline. Since fanwort spreads by fragmentation, try to avoid driving boats through these areas.
Lower Lake Update:
The Eastern Highlands Health District has still closed Lower Bolton Lake for swimming due to a blue-green algae bloom. The lake is tested weekly and the lake will open once two consecutive tests show that the level of cyanobacteria in the lake has dropped back below the threshold. Go here to reach the CT DEEP page with information on blue-green algae blooms.
There will be a treatment for fanwort on the Middle Lake this week. There has been a substantial amount of fanwort located near the boat launch and one spot on the southwest shoreline. Since fanwort spreads by fragmentation, try to avoid driving boats through these areas.
Lower Lake Update:
The Eastern Highlands Health District has still closed Lower Bolton Lake for swimming due to a blue-green algae bloom. The lake is tested weekly and the lake will open once two consecutive tests show that the level of cyanobacteria in the lake has dropped back below the threshold. Go here to reach the CT DEEP page with information on blue-green algae blooms.
caring for our lakes
Lower Bolton Lake Cyanobacteria Update - 8/4/21
Bolton Lake Residents, Friends and Neighbors,
Lower Bolton Lake(LBL): Cyanobacteria cell counts from LBL water samples taken this week are being conducted by NEAR. One sample shows cell counts less than 100,000 cells/ml. The Eastern Highlands Health District has informed us the following DPH/DEEP guidelines will be used for the health alert to be lifted:
Two samples, seven days apart that are less than 100,000 cells/ml, AND substantial improvement in the clarity and color of the water column during both sampling periods.
Weekly monitoring of conditions will continue until the bloom dissipates. The community will be notified of the bloom dissipation at that time. If you have any questions, please call the Eastern Highlands Health District at 860-429-3325.
Regards
Kim Welch
Bolton Lake Commissioner
lake@boltonct.org
Lower Bolton Lake(LBL): Cyanobacteria cell counts from LBL water samples taken this week are being conducted by NEAR. One sample shows cell counts less than 100,000 cells/ml. The Eastern Highlands Health District has informed us the following DPH/DEEP guidelines will be used for the health alert to be lifted:
Two samples, seven days apart that are less than 100,000 cells/ml, AND substantial improvement in the clarity and color of the water column during both sampling periods.
Weekly monitoring of conditions will continue until the bloom dissipates. The community will be notified of the bloom dissipation at that time. If you have any questions, please call the Eastern Highlands Health District at 860-429-3325.
Regards
Kim Welch
Bolton Lake Commissioner
lake@boltonct.org
UPdate: Middle boltoN Lake ReOpens for Swimming
The North Central Heath District has informed the Town of Vernon that it is now safe to swim in Middle Bolton Lake. Recent resampling of lake water for the presence of e-coli showed reduced levels of bacteria and deemed the lake safe for swimming.
The reopening of Newhoca beach and Valley Falls beach has not been determined. Public swimming is available at the Vernon Community Pool.
As of Friday, July 30th, Lower Bolton Lake remains closed to swimming.
Kim Welch
Bolton Lake Commissioner
lake@boltonct.org
David Forrest, President
Friends of Bolton Lakes
fbl@friendsofboltonlakes.org
Lower and Middle Bolton Lakes Closed for Swimming
Bolton Lakes Residents, Friends and Neighbors,
Lower Bolton Lake: As a result of Cyanobacteria cell counts from both 7/27 and 7/28 (123,129/ml & 108,027/ml, respectively) at Lower Bolton Lake, the Eastern Highland Health District with DPH/DEEP guidance has posted a health alert that states the following:
HEALTH ALERT: Lower Bolton Lake is experiencing a Blue-green algae bloom. Cell count results were higher than the 100,000/ml guideline recommended by the State Department of Public Health. At these cell count levels, direct exposure to algae-tainted water through ingestion, inhalation, or contact with skin may pose a risk to health.
In addition, the following advisory has been posted at the Lower Bolton Lake access points.
As of July 28, 2021, Lower Bolton Lake will be CLOSED to SWIMMING until further notice due to a Blue-Green Algae Bloom.
Direct exposure to algae tainted water by way of ingestion, inhalation, or contact with skin may pose a risk to health.
Please no swimming and keep your pets out of the water. Please avoid skin contact with the water when boating and fishing. If fishing, catch-and-release is recommended.
If you have any questions, please call the Eastern Highlands Health District at 860-429-3325.
- NO Swimming
- NO pets allowed in the water
- NO watering of livestock
- NO drinking of water
- Avoid skin contact with water when boating and fishing
Weekly monitoring of conditions will occur moving forward until the bloom dissipates. The communities will be notified of the bloom dissipation at that time. If you have any questions, please call the Eastern Highlands Health District at 860-429-3325.
For more detailed information about blue green algae blooms:
https://portal.ct.gov/DPH/Environmental-Health/Environmental-Health-Section/Blue-Green-Algae-Blooms
Middle Bolton Lake: Newhoca Beach and Valley Falls Park, both in Vernon:
Also as of 7/28, North Central District Health advised that Middle Bolton Lake's Newhoca Beach and Valley Falls Park be closed for swimming as a result of elevated E.coli levels. These two Vernon beaches will be re-opened once tests confirm appropriate levels of bacteria. There was no advisory issued for pets. If you have any questions, please call the North Central District Health at 860-745-0383.
Per the Vernon Parks and Rec, the Vernon Community Pool, at 375 Hartford Turnpike will be open each day from now thru Sunday 10am to 5pm daily for public swimming – no admission fee is being charged, no residency requirement.
Regards,
Kim Welch
Bolton Lake Commissioner
lake@boltonct.org
David Forrest, President
Friends of Bolton Lakes
fbl@friendsofboltonlakes.org
Invasive species educational outreach - saturday, 7/17
The Town of Vernon is sponsoring an Aquatic Invasive Species (AIS) public outreach event at Talcottville Pond. Residents can come learn how to identify and hand-remove invasive Water Chestnut plants. Please bring your own personal canoe or kayak, life jacket, and paddle to join in on the on-water part of the program. The on-water portion of the program will actively search and hand-remove any Water Chestnut plants found, as part of the early detection and rapid response management at Talcottville Pond. The on-land portion of the program will allow for an open Q&A forum for all things related to aquatic invasive plant management in local waters.
Location: parking lot at the corner of Phoenix Street & Maple Avenue
Date: Saturday, July 17th
Time: Arrive at 9am
Duration: Approximately 2 hours
Attire: Outdoor & weather appropriate clothing
Also: Sunscreen & insect repellent
Need: Canoe or kayak with life jacket & oars/paddle (only if planning to assist on water)
Instructor/educator/leader: Kendra Kilson, New England Aquatic Research, LLC (NEAR)
Location: parking lot at the corner of Phoenix Street & Maple Avenue
Date: Saturday, July 17th
Time: Arrive at 9am
Duration: Approximately 2 hours
Attire: Outdoor & weather appropriate clothing
Also: Sunscreen & insect repellent
Need: Canoe or kayak with life jacket & oars/paddle (only if planning to assist on water)
Instructor/educator/leader: Kendra Kilson, New England Aquatic Research, LLC (NEAR)
lower bolton lake curly pondweed treatment Tuesday 6/15
Lower Bolton Lake Use Restrictions Detailed for Treatment on June 15th
Bolton Lake Residents, Friends and Neighbors,
Lower Bolton Lake will be spot treated for curly pondweed on Tuesday, June 15th. The use restrictions are as follows:
NO watering of livestock until June 16th
NO drinking of water until June 18th
NO irrigation until June 20th
Swimming, boating and fishing will not be affected and Indian Notch will OPEN as scheduled on Wednesday, June 16th.
See Something? Say Something!
To report worsening algal conditions or unusual aquatic plants, please use the Friends of Bolton Lakes online reporting tool at Report a Suspicious Plant.
Regards,
Kim Welch
Bolton Lake Commissioner
lake@boltonct.org
Bolton Lake Residents, Friends and Neighbors,
Lower Bolton Lake will be spot treated for curly pondweed on Tuesday, June 15th. The use restrictions are as follows:
NO watering of livestock until June 16th
NO drinking of water until June 18th
NO irrigation until June 20th
Swimming, boating and fishing will not be affected and Indian Notch will OPEN as scheduled on Wednesday, June 16th.
See Something? Say Something!
To report worsening algal conditions or unusual aquatic plants, please use the Friends of Bolton Lakes online reporting tool at Report a Suspicious Plant.
Regards,
Kim Welch
Bolton Lake Commissioner
lake@boltonct.org
Bolton Lakes current conditions include invasive plants - 6/8
Dear Friends and Neighbors,
The following is a message from Kim Welch, the Bolton Lake Commissioner. There are pictures of the two invasive species mentioned below. The first one is fanwort and the second is curly pondweed
FBL
Bolton Lake Residents, Friends and Neighbors,
Lake Use - There are no use restrictions for boating, fishing or swimming in the Bolton Lakes. The lakes remain open for recreational activity, including swimming, but such activities should not occur where algae is visible. Keep yourself, your children, and your pets out of the water where algae scum is visible.
Middle and Lower Bolton Lakes Have Invasive Plants
Lower Bolton Lake - Spot treatment for Curly Pondweed on June 15th
There is an abundance of curly pondweed along the shorelines of Lower Bolton Lake. Unfortunately, this is an invasive plant species. Curly pondweed plant leaves are small (3 to 4 inches long), narrow (like pencil width) and have curly (like lasagna) edges. The Town of Bolton has been monitoring and managing this plant species for a few years. There is a spot treatment scheduled for June 15th to eradicate this invasive plant. Please plan for use restrictions on the 15th and shortly thereafter. I will provide more details on the use restrictions related to this treatment in the coming days. When using the lake, please stay out of the weeds/plants so that we can minimize the spread of them. If you find floating fragments of these invasive species, please remove them from the water and discard them or place them in your compost, away from the lake.
Middle Bolton Lake - Fanwort is found near the Hatch Hill boat launch
Some free-floating fanwort, which is an invasive species, was found near the Hatch Hill boat launch at Middle Bolton Lake. it is being monitored and managed. Fanwort has leaves that look like small fans that are about the size of a quarter coin. Again, when using the lake, please stay out of the plants/weeds so that we can minimize the spread of them. If you find floating fragments of these invasive species, please remove them from the water and discard them or place them in your compost, away from the lake.
Regards,
Kim Welch
Bolton Lake Commissioner
lake@boltonct.org
The following is a message from Kim Welch, the Bolton Lake Commissioner. There are pictures of the two invasive species mentioned below. The first one is fanwort and the second is curly pondweed
FBL
Bolton Lake Residents, Friends and Neighbors,
Lake Use - There are no use restrictions for boating, fishing or swimming in the Bolton Lakes. The lakes remain open for recreational activity, including swimming, but such activities should not occur where algae is visible. Keep yourself, your children, and your pets out of the water where algae scum is visible.
Middle and Lower Bolton Lakes Have Invasive Plants
Lower Bolton Lake - Spot treatment for Curly Pondweed on June 15th
There is an abundance of curly pondweed along the shorelines of Lower Bolton Lake. Unfortunately, this is an invasive plant species. Curly pondweed plant leaves are small (3 to 4 inches long), narrow (like pencil width) and have curly (like lasagna) edges. The Town of Bolton has been monitoring and managing this plant species for a few years. There is a spot treatment scheduled for June 15th to eradicate this invasive plant. Please plan for use restrictions on the 15th and shortly thereafter. I will provide more details on the use restrictions related to this treatment in the coming days. When using the lake, please stay out of the weeds/plants so that we can minimize the spread of them. If you find floating fragments of these invasive species, please remove them from the water and discard them or place them in your compost, away from the lake.
Middle Bolton Lake - Fanwort is found near the Hatch Hill boat launch
Some free-floating fanwort, which is an invasive species, was found near the Hatch Hill boat launch at Middle Bolton Lake. it is being monitored and managed. Fanwort has leaves that look like small fans that are about the size of a quarter coin. Again, when using the lake, please stay out of the plants/weeds so that we can minimize the spread of them. If you find floating fragments of these invasive species, please remove them from the water and discard them or place them in your compost, away from the lake.
Regards,
Kim Welch
Bolton Lake Commissioner
lake@boltonct.org
Middle and Lower Bolton Lakes Have Visible Algae - 5/19
Both Lower Bolton and Middle Bolton Lakes have algae and pollen visible on the surface and in the water column at this time. The algae in the lakes are a mixture of toxic and non-toxic species. These conditions are being monitored closely by our lake resident volunteers and our lake limnology consulting firm (NorthEast Aquatic Research). Connecticut’s Department of Energy and Environmental Protection, our local health districts, and the Towns of Vernon and Bolton have been informed of the current lake water conditions.
The lakes remain open for recreational activity but such activities should not occur where algae are visible. Keep yourself, your children, and your pets out of the water while algae are visible.
Algal conditions can change rapidly; water testing will continue while algae are present. Cyanobacteria algae can produce toxins that could pose a health risk to people and dogs when they are exposed to excessive amounts. While these algal conditions exist, please be alert and avoid areas with visible cyanobacteria or algae concentrations and/or scums in the water or on the shore; also, keep dogs out of the water. Please be aware that dogs tend to be more susceptible to cyanotoxins than humans because they often drink lake water and lick their fur after swimming through a dense cyanobacteria accumulation, which concentrates cells in their bodies potentially resulting in a sick dog.
See Something? Say Something!
To report algal conditions or unusual aquatic plants, please use the Friends of Bolton Lakes online reporting tool.
Kim Welch, Bolton Lake Commissioner
John Williams, Vice president of the Friends of Bolton Lakes
The lakes remain open for recreational activity but such activities should not occur where algae are visible. Keep yourself, your children, and your pets out of the water while algae are visible.
Algal conditions can change rapidly; water testing will continue while algae are present. Cyanobacteria algae can produce toxins that could pose a health risk to people and dogs when they are exposed to excessive amounts. While these algal conditions exist, please be alert and avoid areas with visible cyanobacteria or algae concentrations and/or scums in the water or on the shore; also, keep dogs out of the water. Please be aware that dogs tend to be more susceptible to cyanotoxins than humans because they often drink lake water and lick their fur after swimming through a dense cyanobacteria accumulation, which concentrates cells in their bodies potentially resulting in a sick dog.
See Something? Say Something!
To report algal conditions or unusual aquatic plants, please use the Friends of Bolton Lakes online reporting tool.
Kim Welch, Bolton Lake Commissioner
John Williams, Vice president of the Friends of Bolton Lakes
Annual spring forum (virtual) - May 13
The Friends of Bolton Lakes is hosted its annual spring forum virtually this year on May 13th.There were several speakers and many attended the Zoom meeting. Presentations are provided below.
Agenda
Thank you to those who attended. Your interest and participation are appreciated.
FBL, Board of Directors
Presentations:
Introduction
CAES presentation
Dam project update
NEAR presentation
Agenda
- Greg Bugbee and Summer Stebbins from the Connecticut Agricultural Experiment Station will discuss the invasive plant survey of Middle Bolton Lake conducted last fall.
- Chuck Lee, Bill Coleman, Jena Bogaczyk, and Bill Andres from the Department of Energy and Environmental Protection (DEEP) will discuss the dam project at Hatch Hill; the project is scheduled for construction this fall.
- Hillary Kenyon Garovoy from NorthEast Aquatic Research will discuss the Aquatic Invasive Species grant awarded by DEEP to the towns of Vernon and Bolton and the Friends of Bolton Lakes.
Thank you to those who attended. Your interest and participation are appreciated.
FBL, Board of Directors
Presentations:
Introduction
CAES presentation
Dam project update
NEAR presentation
Volunteer water monitoring training available 4/28
DEEP is sponsoring water monitoring training on April 28th. If you are curious about how to measure water clarity, please attend. The flyer below has the information for signing up. FBL monitors the water clarity along with other parameters twice a month from April to October in both Lower and Middle Lakes. If you want to join us, please let us know.
Lake Monitoring Training flyer
Connecticut Lake Watch program
Lake Monitoring Training flyer
Connecticut Lake Watch program
Lake level rising soon
As of 3/19, the Connecticut Department of Energy and Environmental Protection (DEEP) is planning to start raising the water level in the lakes next week.
fbl spring newsletter 2021
Dear Friends and Neighbors,
Thank you for your continued support of The Friends of Bolton Lakes. Getting through 2020 without face-to-face spring and fall forums was disappointing to say the least. It’s our hope that these communications to you are informative and reassure you that your organization remains active.
Membership Drive
The 2021 membership drive is now underway. It has never been easier. Please renew or start your membership here by either using the online form or downloading the form and mailing it in. Your support helps us advocate for the health and recreational use of our lakes. As a reminder, memberships are for each calendar year.
Watershed Management Plan
The Bolton Lakes and Watershed Management Plan draft has been completed. The plan was written by Hillary Kenyon Garovoy, consultant, Northeast Aquatic Research along with steering committee members. The steering committee for the plan consists of town officials from Bolton, Vernon, Coventry and Tolland, along with FBL. FBL is represented on the committee by David Forrest and John Williams. Many of our members responded to a watershed survey in the fall to help develop the plan. We thank you for your input. A forum will be established this spring to allow the public to voice comments.
Hatch Hill Dam Reconstruction
The Hatch Hill Dam reconstruction project - to the best of our knowledge - is still targeted to begin work in the Fall 2021.
Spring Virtual Seminar
A virtual Spring Seminar is in the final planning stages. In the fall of 2020 FBL commissioned CAES (Connecticut Agricultural Experimental Station) to do an inventory of the plants in Middle Lake. That study has been completed and Greg Bugby, who was in charge of the study, will give a presentation on what was found.
AIS Grant
In 2019, the CT legislature passed HB6637, an act requiring an invasive species stamp for the operation of a motorboat on the inland waters of the state. A portion of the fund was to be used for fighting invasive aquatic species. This year DEEP (Department of Energy and Environment Protection) called for grant applications to be submitted. The towns of Vernon and Bolton along with FBL jointly submitted their grant request for $35,000. The intent is to use the grant money to combat invasive species in the Bolton Lakes and provide educational outreach to local residents and visitors. The text of the grant can be found here. The grants are expected to be awarded at the beginning of April.
Boat Launch Ambassadors
Last fall five FBL board members were trained by DEEP to be boat launch ambassadors for our lakes. The role of a lake ambassador is to engage boating enthusiasts at our boat launches by educating them about environmental issues. Lake ambassadors will keep track of where boaters are coming from and pass out literature on how to keep invasive species out of our lakes. If you are interested in becoming an ambassador, contact FBL at fbl@friendsofboltonlakes.org. If we have enough interest we’ll set up a second training session in the spring.
Jellyfish
At the end of last summer, Middle Lake had a bloom of freshwater jellyfish. They are small, somewhere between a nickel and quarter in diameter. Here is a picture:
Thank you for your continued support of The Friends of Bolton Lakes. Getting through 2020 without face-to-face spring and fall forums was disappointing to say the least. It’s our hope that these communications to you are informative and reassure you that your organization remains active.
Membership Drive
The 2021 membership drive is now underway. It has never been easier. Please renew or start your membership here by either using the online form or downloading the form and mailing it in. Your support helps us advocate for the health and recreational use of our lakes. As a reminder, memberships are for each calendar year.
Watershed Management Plan
The Bolton Lakes and Watershed Management Plan draft has been completed. The plan was written by Hillary Kenyon Garovoy, consultant, Northeast Aquatic Research along with steering committee members. The steering committee for the plan consists of town officials from Bolton, Vernon, Coventry and Tolland, along with FBL. FBL is represented on the committee by David Forrest and John Williams. Many of our members responded to a watershed survey in the fall to help develop the plan. We thank you for your input. A forum will be established this spring to allow the public to voice comments.
Hatch Hill Dam Reconstruction
The Hatch Hill Dam reconstruction project - to the best of our knowledge - is still targeted to begin work in the Fall 2021.
Spring Virtual Seminar
A virtual Spring Seminar is in the final planning stages. In the fall of 2020 FBL commissioned CAES (Connecticut Agricultural Experimental Station) to do an inventory of the plants in Middle Lake. That study has been completed and Greg Bugby, who was in charge of the study, will give a presentation on what was found.
AIS Grant
In 2019, the CT legislature passed HB6637, an act requiring an invasive species stamp for the operation of a motorboat on the inland waters of the state. A portion of the fund was to be used for fighting invasive aquatic species. This year DEEP (Department of Energy and Environment Protection) called for grant applications to be submitted. The towns of Vernon and Bolton along with FBL jointly submitted their grant request for $35,000. The intent is to use the grant money to combat invasive species in the Bolton Lakes and provide educational outreach to local residents and visitors. The text of the grant can be found here. The grants are expected to be awarded at the beginning of April.
Boat Launch Ambassadors
Last fall five FBL board members were trained by DEEP to be boat launch ambassadors for our lakes. The role of a lake ambassador is to engage boating enthusiasts at our boat launches by educating them about environmental issues. Lake ambassadors will keep track of where boaters are coming from and pass out literature on how to keep invasive species out of our lakes. If you are interested in becoming an ambassador, contact FBL at fbl@friendsofboltonlakes.org. If we have enough interest we’ll set up a second training session in the spring.
Jellyfish
At the end of last summer, Middle Lake had a bloom of freshwater jellyfish. They are small, somewhere between a nickel and quarter in diameter. Here is a picture:
The scientific name is Craspedacusta sowerbyi. What we saw on the lake is the adult phase. Most of their life is spent as small polyps on the bottom of the lake. Only when conditions are right in terms of availability of food, mainly zooplankton, temperature and light are hydromedusae produced. Hydromedusae are the small jellyfish we saw. Lakes can go years and years between blooms while the polyps sit on the bottom of the lake. Like all jellyfish, the freshwater jellies have stingers that they use to paralyze their prey. But the stingers are so small they cannot penetrate human skin. So, they pose no danger to swimmers. Late summer and late in the day is when the jellyfish are most active.
On our website is a link to a video shot by Heath Frazier this past summer from jellyfish he caught in Middle lake. And here is a link to find out more about freshwater jellyfish from the United States Geological Survey.
The following is an interview with an expert on freshwater jellyfish. Warning: the first eight minutes is on the freshwater jellyfish and then the video gets weird... jellyfish in the atmosphere, maybe aliens.
https://youtu.be/-b2H4uva_kw
Monthly FBL Meetings
We continue to have members with diverse information and knowledge join the monthly meetings. We urge everyone to stay involved with FBL and attend a virtual meeting. It's easy. Just send an email to fbl@friendsofboltonlakes.org to request the ZOOM link. The meetings are held at 6:30 PM on the third Wednesday of each month.
Stay safe.
FBL, Board of Directors
On our website is a link to a video shot by Heath Frazier this past summer from jellyfish he caught in Middle lake. And here is a link to find out more about freshwater jellyfish from the United States Geological Survey.
The following is an interview with an expert on freshwater jellyfish. Warning: the first eight minutes is on the freshwater jellyfish and then the video gets weird... jellyfish in the atmosphere, maybe aliens.
https://youtu.be/-b2H4uva_kw
Monthly FBL Meetings
We continue to have members with diverse information and knowledge join the monthly meetings. We urge everyone to stay involved with FBL and attend a virtual meeting. It's easy. Just send an email to fbl@friendsofboltonlakes.org to request the ZOOM link. The meetings are held at 6:30 PM on the third Wednesday of each month.
Stay safe.
FBL, Board of Directors
2021 membership drive
The 2021 membership drive has begun. We hope you will join us or renew your membership now. We continue to offer an online renewal option - you can renew by credit card or PayPal as an alternative to filling out and mailing a registration form. You can access these options with the "Join or Renew" link below.
We have tried to anticipate some of your questions in our Membership FAQs page at the link below (and in the menu). Because FBL is a registered public charity, many employers will match your membership dues and other contributions. We encourage you to apply for a matching gift if your employer offers one.
Join or Renew
Membership Frequently Asked Questions
We have tried to anticipate some of your questions in our Membership FAQs page at the link below (and in the menu). Because FBL is a registered public charity, many employers will match your membership dues and other contributions. We encourage you to apply for a matching gift if your employer offers one.
Join or Renew
Membership Frequently Asked Questions
FBL winter newsletter 2021
Dear Friends and Neighbors,
The Friends of Bolton Lakes welcomes in a new year with the firm hope that the pandemic will be behind us and we can begin to enjoy a bit of normalcy in and around our wonderful lake region.
FBL achieved many of the goals we set last year in spite of the difficulties presented by the pandemic. We have continued our joint work with the towns of Bolton and Vernon moving closer to watershed management rather than individual lake management. In early spring of 2020, the Middle Lake had an algae bloom that sickened a dog but dissipated rapidly. In addition, the Middle Lake had a small fanwort patch that was treated late in the summer. The Lower Lake had a curly pondweed outbreak that was treated. Overall, it was a good year for lake clarity and lake health.
Here are some relevant things to look for in 2021.
The Bolton Lakes Region Watershed Plan is well on its way to completion.
• DEEP (Department of Energy and Environment Protection) approved the request to use the remaining funds from the STEAP (Small Town Economic Assistance Program) Grant to allow the watershed plan to be initiated.
• Many of our members responded to a recent watershed survey. We thank you. The current views of our lake stakeholders will be compared with the future views from a second survey.
• A forum will be organized in the spring for receiving public comment and to discuss the plan’s implementation projects. Funding to complete the watershed plan will come from town resources. More to come.
The State’s Office of Policy and Management, Budget & Financial Management Division has approved funding for the Hatch Hill culvert [dam] renovation. The design was previously accepted by the DEEP Division of Dams and Dam Safety in 2018. The request for proposal is in process and expected to be finalized this spring. Construction is targeted for fall 2021 immediately following the fall drawdown.
At its first meeting last February the stakeholders of the Bolton Lakes Watershed included FBL, the towns of Vernon and Bolton, DEEP, and consultants from NEAR (Northeast Aquatic Research). Together they established short- and long-term goals to develop an effectively managed drawdown program, developed a set of protocols for maintaining the seasonal water levels of the lakes and created a procedure that could mitigate the known uptick of invasive plants and other non-native species that are infiltrating the lakes. The meetings will continue and will be part of the watershed management plan.
The equipment that detects Cyanobacteria in the lakes purchased with a Connecticut Federation of Lakes grant is being used to contribute to the national BloomWatch project collecting data on cyanobacteria. Additionally, two lake level monitors were purchased with funds from the STEAP grant. One logger was placed on the Lower Lake, the other on the Middle Lake and they have been monitoring the lake levels every hour since November. We are still working with DEEP to obtain data on the sluice gate valves to understand how they are opened and closed to regulate the level of the lakes. That data should allow us to keep lake levels more constant during the drawdown periods.
A virtual Spring Seminar is being organized to present the results of the CAES (Connecticut Agricultural Experiment Station) invasive plant species survey of the Middle Lake which was completed in 2020. Invasives such as fanwort and milfoil continue be on FBL’s radar. We are attempting to have signs erected at the boat launches and have a boat launch ambassador program to alert lake visitors of the dangers of invasive plants. FBL will continue to monitor and test the water quality and clarity in the Bolton Lakes and share the findings with the towns and NEAR. The data is vital to the implementation of the watershed plan. This year we hope to make some of that data (clarity and temperature) available on our website.
We were pleased to have had members join the monthly meetings and bring their valuable insights. I urge and challenge everyone to stay involved with FBL and attend at least one monthly virtual meeting during 2021. It’s easy. Just send an email to fbl@friendsofboltonlakes.org to request the ZOOM link. The meetings are held at 6:30 PM on the third Wednesday of each month.
On behalf of the Board of Directors,
Stay Safe, Stay healthy
David Forrest, President FBL
The Friends of Bolton Lakes welcomes in a new year with the firm hope that the pandemic will be behind us and we can begin to enjoy a bit of normalcy in and around our wonderful lake region.
FBL achieved many of the goals we set last year in spite of the difficulties presented by the pandemic. We have continued our joint work with the towns of Bolton and Vernon moving closer to watershed management rather than individual lake management. In early spring of 2020, the Middle Lake had an algae bloom that sickened a dog but dissipated rapidly. In addition, the Middle Lake had a small fanwort patch that was treated late in the summer. The Lower Lake had a curly pondweed outbreak that was treated. Overall, it was a good year for lake clarity and lake health.
Here are some relevant things to look for in 2021.
The Bolton Lakes Region Watershed Plan is well on its way to completion.
• DEEP (Department of Energy and Environment Protection) approved the request to use the remaining funds from the STEAP (Small Town Economic Assistance Program) Grant to allow the watershed plan to be initiated.
• Many of our members responded to a recent watershed survey. We thank you. The current views of our lake stakeholders will be compared with the future views from a second survey.
• A forum will be organized in the spring for receiving public comment and to discuss the plan’s implementation projects. Funding to complete the watershed plan will come from town resources. More to come.
The State’s Office of Policy and Management, Budget & Financial Management Division has approved funding for the Hatch Hill culvert [dam] renovation. The design was previously accepted by the DEEP Division of Dams and Dam Safety in 2018. The request for proposal is in process and expected to be finalized this spring. Construction is targeted for fall 2021 immediately following the fall drawdown.
At its first meeting last February the stakeholders of the Bolton Lakes Watershed included FBL, the towns of Vernon and Bolton, DEEP, and consultants from NEAR (Northeast Aquatic Research). Together they established short- and long-term goals to develop an effectively managed drawdown program, developed a set of protocols for maintaining the seasonal water levels of the lakes and created a procedure that could mitigate the known uptick of invasive plants and other non-native species that are infiltrating the lakes. The meetings will continue and will be part of the watershed management plan.
The equipment that detects Cyanobacteria in the lakes purchased with a Connecticut Federation of Lakes grant is being used to contribute to the national BloomWatch project collecting data on cyanobacteria. Additionally, two lake level monitors were purchased with funds from the STEAP grant. One logger was placed on the Lower Lake, the other on the Middle Lake and they have been monitoring the lake levels every hour since November. We are still working with DEEP to obtain data on the sluice gate valves to understand how they are opened and closed to regulate the level of the lakes. That data should allow us to keep lake levels more constant during the drawdown periods.
A virtual Spring Seminar is being organized to present the results of the CAES (Connecticut Agricultural Experiment Station) invasive plant species survey of the Middle Lake which was completed in 2020. Invasives such as fanwort and milfoil continue be on FBL’s radar. We are attempting to have signs erected at the boat launches and have a boat launch ambassador program to alert lake visitors of the dangers of invasive plants. FBL will continue to monitor and test the water quality and clarity in the Bolton Lakes and share the findings with the towns and NEAR. The data is vital to the implementation of the watershed plan. This year we hope to make some of that data (clarity and temperature) available on our website.
We were pleased to have had members join the monthly meetings and bring their valuable insights. I urge and challenge everyone to stay involved with FBL and attend at least one monthly virtual meeting during 2021. It’s easy. Just send an email to fbl@friendsofboltonlakes.org to request the ZOOM link. The meetings are held at 6:30 PM on the third Wednesday of each month.
On behalf of the Board of Directors,
Stay Safe, Stay healthy
David Forrest, President FBL
bolton lakes and watershed survey
The Towns of Bolton, Vernon, Coventry, and Tolland are working together to craft a Bolton Lakes and Watershed Management Plan. With your input to the Bolton Lakes and watershed survey, we can make a management plan that will truly help improve and maintain these delicate ecosystems. The survey closed on Sunday, December 20th. Thank you to those who provided responses to the survey.
Thank you.
The Friends of Bolton Lakes
Thank you.
The Friends of Bolton Lakes
Fanwort treated - watch for and report sightings
September 2020
Recently, a small patch of fanwort and a larger patch of milfoil were treated on the southwest side of Middle Bolton Lake. That treatment appears successful. This weekend four strands of fanwort were found near the boat launch on Hatch Hill. On advice from the lake limnologist, we are asking everyone on the lake for two things. First, if you see some plant you don't know or you do know but know it should not be in the lake, use the FBL "Report a Suspicious Plant" menu item.
Second, avoid fishing in the area right in front of the boat launch and ask others to avoid fishing there too. Fanwort spreads through fragmentation which can be caused by fishing. Treating invasive species works through vigilance and identifying issues before they become big problems. Your help is essential. We've included a picture of fanwort below.
Thank you,
Friends of Bolton Lakes
Recently, a small patch of fanwort and a larger patch of milfoil were treated on the southwest side of Middle Bolton Lake. That treatment appears successful. This weekend four strands of fanwort were found near the boat launch on Hatch Hill. On advice from the lake limnologist, we are asking everyone on the lake for two things. First, if you see some plant you don't know or you do know but know it should not be in the lake, use the FBL "Report a Suspicious Plant" menu item.
Second, avoid fishing in the area right in front of the boat launch and ask others to avoid fishing there too. Fanwort spreads through fragmentation which can be caused by fishing. Treating invasive species works through vigilance and identifying issues before they become big problems. Your help is essential. We've included a picture of fanwort below.
Thank you,
Friends of Bolton Lakes
Fanwort treatment on mbl and more
August 2020
As summer draws to a close we have some information to share with you about our lakes.
Curly Pondweed on Lower Bolton Lake
The curly pondweed on Lower Bolton Lake was treated in July and the treatment seems to have worked. Currently there are no plans for additional treatment.
Fanwort and Milfoil on Middle Bolton Lake
At the beginning of July a member of FBL submitted a sighting of fanwort to the FBL invasive plant reporting tool. Later in July, the Connecticut Agricultural Experiment Station, contracted by FBL, conducted a Middle Bolton Lakes Plant Survey. As a result a small patch of fanwort and a slightly larger patch of milfoil was identified near the shore on the southwest side of the lake. The survey findings were then verified by the Northeast Aquatic Research limnologist. Subsequently, the town of Vernon funded a chemical treatment to be administered by Solitude. The treatment chemicals will combat both milfoil and fanwort. It will be done this Thursday, August 27, 2020 (changed from Tuesday, August 25). Relying on protocols from 2019 with similar treatments there will be minimal, if any, restrictions on lake use either by swimming or watercraft.
Koigate on Middle Bolton Lake
In April a large orange and white koi [carp-like fish] was spotted in Middle Lake near the boat launch. In May, two were spotted together on the southeast side of the lake in shallow water. Although it is an illegal act to use the lakes for disposal the initial feedback from the authorities was ‘not to worry’ until they had a chance to complete their research and convey their findings to FBL. See the picture below.
Since then the fish have been spotted several times in various places around the lake. Jeff Phelon, a FBL member, also contacted the DEEP (Department of Energy and Environmental Protection) Fisheries Division on his own out of concern that the koi might be invasive. Chris McDowell, from the DEEP Fisheries Division, responded with the following information: “Dumping Koi or any other fish in the lake is illegal. But the koi are harmless to the environs of the lakes and DEEP has no record of a sustained population of koi or goldfish in a Connecticut lake. Therefore, DEEP is not going to take any action to eradicate the fish. That said, if the eagles do not take advantage of an easy prey, feel free to take them out of the lake.” Similar to most carp, they will bite on a hook hidden in a ball of bread. If you do catch the koi or find their bodies, please take good pictures and send them to FBL at fbl@friendsofboltonlakes.org. We will forward them to DEEP so that they can document having them in the lake.
As summer draws to a close we have some information to share with you about our lakes.
Curly Pondweed on Lower Bolton Lake
The curly pondweed on Lower Bolton Lake was treated in July and the treatment seems to have worked. Currently there are no plans for additional treatment.
Fanwort and Milfoil on Middle Bolton Lake
At the beginning of July a member of FBL submitted a sighting of fanwort to the FBL invasive plant reporting tool. Later in July, the Connecticut Agricultural Experiment Station, contracted by FBL, conducted a Middle Bolton Lakes Plant Survey. As a result a small patch of fanwort and a slightly larger patch of milfoil was identified near the shore on the southwest side of the lake. The survey findings were then verified by the Northeast Aquatic Research limnologist. Subsequently, the town of Vernon funded a chemical treatment to be administered by Solitude. The treatment chemicals will combat both milfoil and fanwort. It will be done this Thursday, August 27, 2020 (changed from Tuesday, August 25). Relying on protocols from 2019 with similar treatments there will be minimal, if any, restrictions on lake use either by swimming or watercraft.
Koigate on Middle Bolton Lake
In April a large orange and white koi [carp-like fish] was spotted in Middle Lake near the boat launch. In May, two were spotted together on the southeast side of the lake in shallow water. Although it is an illegal act to use the lakes for disposal the initial feedback from the authorities was ‘not to worry’ until they had a chance to complete their research and convey their findings to FBL. See the picture below.
Since then the fish have been spotted several times in various places around the lake. Jeff Phelon, a FBL member, also contacted the DEEP (Department of Energy and Environmental Protection) Fisheries Division on his own out of concern that the koi might be invasive. Chris McDowell, from the DEEP Fisheries Division, responded with the following information: “Dumping Koi or any other fish in the lake is illegal. But the koi are harmless to the environs of the lakes and DEEP has no record of a sustained population of koi or goldfish in a Connecticut lake. Therefore, DEEP is not going to take any action to eradicate the fish. That said, if the eagles do not take advantage of an easy prey, feel free to take them out of the lake.” Similar to most carp, they will bite on a hook hidden in a ball of bread. If you do catch the koi or find their bodies, please take good pictures and send them to FBL at fbl@friendsofboltonlakes.org. We will forward them to DEEP so that they can document having them in the lake.
Membership
Thanks to all who have renewed their membership! Your interest and financial support keep the Friends of Bolton Lakes a viable advocate for the continued health of our lakes and enables us to assist the State and towns with their management. If you haven't found time to join/renew yet, please use the membership link provided in the menu.
Lost and Found
After hurricane Isaias, three nice, tethered inner tubes washed up just past the point on Middle Bolton Lake. If they are yours contact FBL at fbl@friendsofboltonlakes.org.
Stay safe. Stay healthy.
Thank you.
Friends of Bolton Lakes
Thanks to all who have renewed their membership! Your interest and financial support keep the Friends of Bolton Lakes a viable advocate for the continued health of our lakes and enables us to assist the State and towns with their management. If you haven't found time to join/renew yet, please use the membership link provided in the menu.
Lost and Found
After hurricane Isaias, three nice, tethered inner tubes washed up just past the point on Middle Bolton Lake. If they are yours contact FBL at fbl@friendsofboltonlakes.org.
Stay safe. Stay healthy.
Thank you.
Friends of Bolton Lakes
cyanobacteria warning lifted - lakes are fine 6/6/20
Both lakes were tested again this week for cyanobacteria and both lakes came back clean. The health departments that govern the lakes lifted the warning about letting children and pets swim in the lakes. The warning signs at the launches and other access points have been removed.
We will have a more complete discussion of what happened in the summer newsletter.
We will have a more complete discussion of what happened in the summer newsletter.
Algae Blooms MBL and lBL - not a current problem
Alert (5/29/20) from Kim Welch, Bolton Lake Commissioner:
Unfortunately both Lower Bolton and Middle Bolton Lakes have documented cyanobacteria algae blooms based on last week's water testing samples. As a result, the CT Eastern Highland and North Central Health Districts have recommended a health notice be posted. The CT DEEP has issued and posted the signs. The image shown below reflects the actual signs used for this purpose.
The lakes remain open for recreational activity but such activities should not occur where algae is visible. Keep dogs out of the water.
Cyanobacteria conditions can change rapidly, therefore weekly water testing will continue while algae is visible. This algae can produce toxins that could pose a health risk to people and dogs when they are exposed to excessive algae. While these algal conditions exist, please be alert and avoid areas with visible cyanobacteria or algae concentrations and/or scums in the water as well as on the shore and keep dogs out of the water. Please be aware that dogs tend to be more susceptible to cyanotoxins than humans because they often drink lake water and may lick their fur after swimming through a dense cyanobacteria accumulation, which concentrates cells in their bodies potentially resulting in a sick dog.
Regards
Kim Welch
Bolton Lake Commissioner
lake@boltonct.org
Here is a link to the Department of Health and DEEP guidance statement on cyanobacteria:
https://portal.ct.gov/-/media/Departments-and-Agencies/DPH/dph/environmental_health/BEACH/Blue-Green-AlgaeBlooms_June2019_FINAL.pdf?la=en
FBL will send out more information next week once another round of testing has been completed.
Stay safe, stay lake vigilant and stay healthy.
Unfortunately both Lower Bolton and Middle Bolton Lakes have documented cyanobacteria algae blooms based on last week's water testing samples. As a result, the CT Eastern Highland and North Central Health Districts have recommended a health notice be posted. The CT DEEP has issued and posted the signs. The image shown below reflects the actual signs used for this purpose.
The lakes remain open for recreational activity but such activities should not occur where algae is visible. Keep dogs out of the water.
Cyanobacteria conditions can change rapidly, therefore weekly water testing will continue while algae is visible. This algae can produce toxins that could pose a health risk to people and dogs when they are exposed to excessive algae. While these algal conditions exist, please be alert and avoid areas with visible cyanobacteria or algae concentrations and/or scums in the water as well as on the shore and keep dogs out of the water. Please be aware that dogs tend to be more susceptible to cyanotoxins than humans because they often drink lake water and may lick their fur after swimming through a dense cyanobacteria accumulation, which concentrates cells in their bodies potentially resulting in a sick dog.
Regards
Kim Welch
Bolton Lake Commissioner
lake@boltonct.org
Here is a link to the Department of Health and DEEP guidance statement on cyanobacteria:
https://portal.ct.gov/-/media/Departments-and-Agencies/DPH/dph/environmental_health/BEACH/Blue-Green-AlgaeBlooms_June2019_FINAL.pdf?la=en
FBL will send out more information next week once another round of testing has been completed.
Stay safe, stay lake vigilant and stay healthy.
covid-19
FBL reached out to both Vernon and Bolton leadership to ask if there is anything FBL can do at this time. Vernon was appreciative of the offer. Bolton asked us to pass along some information.
From Sandy Pierog, First Selectman, Town of Bolton:
"Thanks for the offer. Helping us reach as many residents as possible would be of great assistance right now.
You can ask your members to be sure they:
Stay safe, everyone.
The Friends of Bolton Lakes
From Sandy Pierog, First Selectman, Town of Bolton:
"Thanks for the offer. Helping us reach as many residents as possible would be of great assistance right now.
You can ask your members to be sure they:
- Sign up for CT alerts from the state at: www.ctalerts.gov.
- Sign up for the e-mailed Bolton Bulletin at https://bolton.govoffice.com/index.asp?SEC={76FAA039-AE70-4EDF-B2F4-3CA467479711}&Type=QUICKFORM.
- Watch for info on how to participate in public meetings from home on our web page bolton.govoffice.com .
- Check out our guide to doing business with the town during the health crisis- https://bolton.govoffice.com/vertical/Sites/%7B30EEBA3C-BE1C-42AE-911F-0E304A672785%7D/uploads/COVID19_Bolton_Operations_Manual_3.20.2020_12-00pm(1).pdf ."
Stay safe, everyone.
The Friends of Bolton Lakes
Friends of Bolton Lakes available on amazon smile
What is Amazon Smile? AmazonSmile is a website operated by Amazon with the same products, prices, and shopping features as Amazon.com. The difference is that when you shop on AmazonSmile, the AmazonSmile Foundation will donate 0.5% of the purchase price of eligible products to the charitable organization of your choice.
You get to AmazonSmile by going to smile.amazon.com. The first time you go to the site, you can select a charity to donate to - in this case, Friends of Bolton Lakes. This does not change any of your other Amazon settings. You can bookmark smile.amazon.com to make sure you are using the smile website. You will see Amazon Smile in the upper left-hand side of the browser window. There is also a separate Amazon Smile app if you shop at Amazon from your phone.
Thank you. If you have any questions, please use the Contact Us menu selection.
You get to AmazonSmile by going to smile.amazon.com. The first time you go to the site, you can select a charity to donate to - in this case, Friends of Bolton Lakes. This does not change any of your other Amazon settings. You can bookmark smile.amazon.com to make sure you are using the smile website. You will see Amazon Smile in the upper left-hand side of the browser window. There is also a separate Amazon Smile app if you shop at Amazon from your phone.
Thank you. If you have any questions, please use the Contact Us menu selection.
Friends of bolton lakes has a new email address
Please be advised the the email address for Friends of Bolton Lakes has changed to fbl@friendsofboltonlakes.org. Because of this change, notifications from FBL may end up in your junk or spam mail. Please add this address to your contacts to ensure you don't miss any lake updates. Thank you.
Aquatic plants in lower and middle bolton lakes
Aquatic plants are a necessary and natural part of the lake ecosystem. Many plants co-exist peacefully with other species and with the people that enjoy the lakes. Some, however, are invasive. While any aquatic plant has the potential to become a nuisance, invasive species are far more likely to do so. They out-compete native plants and can proliferate explosively to disrupt the ecology and recreational use of the lakes.
The attachment provides updated information on the aquatic plants in the Bolton Lakes with a focus on the invasive species found in the lakes. We also discuss two potential invaders, hydrilla and water chestnut. While they are not yet in the Bolton Lakes, they are present in nearby lakes and ponds and pose the risk of turning up here. We ask everyone to be on the lookout for them and report any sightings promptly.
Hydrilla is perhaps the most worrisome invasive plant. According to the Centre for Agriculture and Bio-Sciences International: “[Hydrilla] is one of the most troublesome aquatic weeds in the world.” Hydrilla has been found in the Connecticut river and in nearby Coventry Lake where it was discovered in 2015.
According to New York’s Invasive Species Information website, “[Water chestnut] can form nearly impenetrable floating mats of vegetation … [that] can severely limit light penetration into the water and reduce or eliminate the growth of native aquatic plants beneath the canopy.”
Water chestnut has been found in Vernon in Tankerhoosen, Dobsonville and Talcottville ponds. Because those ponds are so close, the risk of it finding its way to the Bolton Lakes is high. It is unrelated to the water chestnuts commonly used in cooking.
The document linked below has important information that should be of interest to all residents and lake users. It provides more detail on hydrilla and water chestnut and information on the other plants, currently of concern in the lakes. These include curly-leaf pondweed and mudmat in Lower Bolton Lake, and fanwort and variable-leaf milfoil in Middle Bolton Lake. It includes links to authoritative online information and tells how to report any invasive or suspicious plants you see.
Thank you for your interest in the Bolton Lakes and for any monitoring assistance you can provide.
Link to document containing updated information on aquatic plants in MBL and LBL
The attachment provides updated information on the aquatic plants in the Bolton Lakes with a focus on the invasive species found in the lakes. We also discuss two potential invaders, hydrilla and water chestnut. While they are not yet in the Bolton Lakes, they are present in nearby lakes and ponds and pose the risk of turning up here. We ask everyone to be on the lookout for them and report any sightings promptly.
Hydrilla is perhaps the most worrisome invasive plant. According to the Centre for Agriculture and Bio-Sciences International: “[Hydrilla] is one of the most troublesome aquatic weeds in the world.” Hydrilla has been found in the Connecticut river and in nearby Coventry Lake where it was discovered in 2015.
According to New York’s Invasive Species Information website, “[Water chestnut] can form nearly impenetrable floating mats of vegetation … [that] can severely limit light penetration into the water and reduce or eliminate the growth of native aquatic plants beneath the canopy.”
Water chestnut has been found in Vernon in Tankerhoosen, Dobsonville and Talcottville ponds. Because those ponds are so close, the risk of it finding its way to the Bolton Lakes is high. It is unrelated to the water chestnuts commonly used in cooking.
The document linked below has important information that should be of interest to all residents and lake users. It provides more detail on hydrilla and water chestnut and information on the other plants, currently of concern in the lakes. These include curly-leaf pondweed and mudmat in Lower Bolton Lake, and fanwort and variable-leaf milfoil in Middle Bolton Lake. It includes links to authoritative online information and tells how to report any invasive or suspicious plants you see.
Thank you for your interest in the Bolton Lakes and for any monitoring assistance you can provide.
Link to document containing updated information on aquatic plants in MBL and LBL
the american red cross has issued the following safety tips for a heat wave
- NEVER LEAVE CHILDREN OR PETS ALONE IN ENCLOSED VEHICLES.
- Stay hydrated by drinking plenty of fluids. Avoid drinks with caffeine or alcohol.
- Avoid extreme temperature changes.
- Wear loose-fitting, lightweight, light-colored clothing.
- Slow down, stay indoors and avoid strenuous exercise during the hottest part of the day.
- Postpone outdoor games and activities.
- Use a buddy system when working in excessive heat. Take frequent breaks if working outdoors.
- Check on those who do not have air conditioning, or who spend time alone.
- Check on animals frequently, and make sure they have plenty of cool water.
- Discuss heat safety precautions with members of your household.
- Those without air conditioning should seek relief from the heat during the warmest part of the day at places such as libraries, theaters, and shopping malls.
2019 REQUEST FOR CHANNEL CATFISH LAKE MONITORING ASSISTANCE
The Friends of Bolton Lakes (FBL) is asking for your help in monitoring Channel Catfish in Lower Bolton Lake. The vigilance of FBL members and fishermen who reported smaller, possibly juvenile Channel Catfish in Lower Bolton Lake enabled us to alert the CT Department of Energy and Environmental Protection (DEEP) to the possibility that Channel Catfish might be spawning in Lower Bolton Lake. Some Columbia Lake residents have reported that Channel Catfish might be spawning in nearby Columbia Lake.
DEEP suspended Channel Catfish stocking in Lower Bolton Lake after the severe algae bloom in 2012. Between 2007 and 2012, DEEP stocked over 17,000 yearling Channel catfish, a non-native species, into the lake. DEEP netted small Channel Catfish in Lower Bolton Lake during its September 2017 survey. DEEP testing to determine the age of the fish found that the fish they caught were spawned before 2012, the last year of stocking. Although DEEP agreed not to stock Channel Catfish into Lower Bolton Lake in 2019, DEEP wants to resume stocking next year in the spring of 2020. Last October, DEEP indicated that, if stocking is resumed, 700 adult fish might be stocked every 2 years, but nothing has been finalized.
Yearling Channel Catfish between 9 and 12 inches long were stocked into the lake from 2007 to 2012. The fish should grow at a rate of roughly 2 inches per year, but the growth rate has been less than this. Given that the most recent stocking took place in 2012, any Channel Catfish caught in Lower Bolton Lake less than 16 inches in length could have been spawned in our lake.
We are asking you to please forward any evidence you have of Channel Catfish spawning in Lower Bolton Lake.
1. If you observe any nesting sites of the Channel Catfish, please notify us and provide the location.
2. If you catch Channel Catfish less than 16 inches long, please take a photo and measurements to share with FBL, wrap the fish in aluminum foil, put it in your freezer, and contact FBL so we can have the channel catfish tested to determine its age. The smaller the fish, the more likely it was spawned in Lower Bolton Lake.
3. If you have observed a reduction of bass, pickerel or other fish populations in Lower Bolton Lake following the introduction of channel catfish, please email us and share your observations.
4. We are interested in feedback regarding your thoughts on the issue of resuming Channel Catfish stocking in Lower Bolton. Please send your photos, observations, and comments to FBL, friendsofboltonlakes@comcast.net.
You might find the illustrations below helpful in identifying Channel Catfish. Note that unlike Brown and Yellow Bullheads, Channel Catfish have a distinctly forked tail.
Thank you.
DEEP suspended Channel Catfish stocking in Lower Bolton Lake after the severe algae bloom in 2012. Between 2007 and 2012, DEEP stocked over 17,000 yearling Channel catfish, a non-native species, into the lake. DEEP netted small Channel Catfish in Lower Bolton Lake during its September 2017 survey. DEEP testing to determine the age of the fish found that the fish they caught were spawned before 2012, the last year of stocking. Although DEEP agreed not to stock Channel Catfish into Lower Bolton Lake in 2019, DEEP wants to resume stocking next year in the spring of 2020. Last October, DEEP indicated that, if stocking is resumed, 700 adult fish might be stocked every 2 years, but nothing has been finalized.
Yearling Channel Catfish between 9 and 12 inches long were stocked into the lake from 2007 to 2012. The fish should grow at a rate of roughly 2 inches per year, but the growth rate has been less than this. Given that the most recent stocking took place in 2012, any Channel Catfish caught in Lower Bolton Lake less than 16 inches in length could have been spawned in our lake.
We are asking you to please forward any evidence you have of Channel Catfish spawning in Lower Bolton Lake.
1. If you observe any nesting sites of the Channel Catfish, please notify us and provide the location.
2. If you catch Channel Catfish less than 16 inches long, please take a photo and measurements to share with FBL, wrap the fish in aluminum foil, put it in your freezer, and contact FBL so we can have the channel catfish tested to determine its age. The smaller the fish, the more likely it was spawned in Lower Bolton Lake.
3. If you have observed a reduction of bass, pickerel or other fish populations in Lower Bolton Lake following the introduction of channel catfish, please email us and share your observations.
4. We are interested in feedback regarding your thoughts on the issue of resuming Channel Catfish stocking in Lower Bolton. Please send your photos, observations, and comments to FBL, friendsofboltonlakes@comcast.net.
You might find the illustrations below helpful in identifying Channel Catfish. Note that unlike Brown and Yellow Bullheads, Channel Catfish have a distinctly forked tail.
Thank you.
Report on the Sediments Nearby the Atlantic White Cedars in Upper Bolton Lake - wednesday, may 22 - 7:00 p.m.
Given the north-to-south waterflow among the Bolton lakes, the health of the upper lake affects both the lower lakes. At 7:00 PM on Wednesday, May 22nd, 2019, at the Notch Road Municipal Center, 106 Notch Road, Bolton, recent UConn graduate Connor Mitchel and his faculty advisor, Will Ouimet, presented the results of their investigations into the sediments in the northern reaches of Upper Bolton Lake. The team made three visits to the lake. Following a reconnaissance visit in fall 2018, the team made two over ice-trips to collect through-ice cores and ground-penetrating-radar measurements.
The project was proposed to the Bolton Lakes Watershed Conservation Alliance (BLWCA) by Debbie Surabian of the USDA Natural Resources Conservation Service. BLWCA, which facilitated the work, contacted Dr. Robert Thorson who arranged for UConn's participation.
The presentation was well attended. Additional information will be posted as available.
The project was proposed to the Bolton Lakes Watershed Conservation Alliance (BLWCA) by Debbie Surabian of the USDA Natural Resources Conservation Service. BLWCA, which facilitated the work, contacted Dr. Robert Thorson who arranged for UConn's participation.
The presentation was well attended. Additional information will be posted as available.
Connor Mitchel, his UConn advisor Will Ouimet, and Peter Van Dine of FBL.
volunteers received lake monitoring training
FBL has had an active, ongoing, water-quality monitoring program for the Bolton Lakes since 2014. Now Northeast Aquatic Research (NEAR) has asked for our help in collecting additional data from Middle Bolton Lake. In turn, we requested volunteers to attend lake monitoring training in order to participate in our ongoing three-lake monitoring program.
The work involves taking measurements and collecting water samples in shallow water near the boat launch and spillway, and in deeper water. The intent is to learn more about the flow of nutrients between the lakes.
The Town of Vernon, understanding the importance of this work, sponsored a training session by NEAR for the volunteers. The training was held April 17th. Thank you to those who volunteered and attended the training.
The work involves taking measurements and collecting water samples in shallow water near the boat launch and spillway, and in deeper water. The intent is to learn more about the flow of nutrients between the lakes.
The Town of Vernon, understanding the importance of this work, sponsored a training session by NEAR for the volunteers. The training was held April 17th. Thank you to those who volunteered and attended the training.
find a suspicious aquatic plant? it is now easier to report it.
We have a new method for finding out what the plant is:
It is very difficult to completely eliminate invasive aquatic plants once they become established. As a result it is crucial that residents, fishermen, and boaters remain vigilant as they enjoy the Bolton Lakes on a daily basis.
If you spot an aquatic plant you suspect is non-native or invasive in Lower, Middle or Upper Bolton Lake, including Cedar Swamp, use our new Suspicious Plant page to report it.
Benefits of the new method:
Link to:
Connecticut’s Aquatic and Wetland Invasive Plant Identification Guide
Fanwort Identification Information
It is very difficult to completely eliminate invasive aquatic plants once they become established. As a result it is crucial that residents, fishermen, and boaters remain vigilant as they enjoy the Bolton Lakes on a daily basis.
If you spot an aquatic plant you suspect is non-native or invasive in Lower, Middle or Upper Bolton Lake, including Cedar Swamp, use our new Suspicious Plant page to report it.
Benefits of the new method:
- It's quick and easy.
- You can report a suspicious plant with your phone when you see the plant (take a photo and fill out the form on the FBL site) or by using your computer (upload a photo to the form on the FBL site).
- The suspicious plant form enables you to enter all required information to help identify suspicious plants.
- You should still gather the sample and refrigerate it in a ziploc bag with enough water to keep it moist in case follow-up is needed.
Link to:
Connecticut’s Aquatic and Wetland Invasive Plant Identification Guide
Fanwort Identification Information
Tick populations on the rise - know what to do
As predicted, the tick population has increased. be aware of what to look for and what to do it you find a tick. The Connecticut Agriculture Experiment Station provided an informative document.
CAES Tick Repellent Fact Sheetcaes_tick_repellent_fact_sheet.pdf
CAES Tick Repellent Fact Sheetcaes_tick_repellent_fact_sheet.pdf
AQUATIC pLANT sURVEY
The Friends of Bolton Lakes conducted their annual aquatic plant surveys of Lower and Middle Bolton Lakes on 7/20-21/2016. The surveys were performed from pontoon boats circumnavigating the lakes and following up on guidance from lake residents. The great majority of responses to our request for input came from Middle Bolton Lake residents whose concerns included the proliferation of milfoil, pondweed, lily pads, cattails, and phragmites.
The top-level finding is that at the time of the survey Lower Bolton Lake was generally clear of obstructive plants but Middle Bolton Lake has experienced prolific growth of both native and non-native aquatic plants.
The key changes noted in the Middle Lake are:
We submitted samples of the most prevalent pondweed in Middle Bolton Lake to both Northeast Aquatic Research (NEAR) and the CT Ag Station. Both identified the weed as Potamogetan Bicupulatus, also known as “snailseed pondweed.” Unlike milfoil this plant is not likely to spread through fragmentation but it is a prolific seed-producer. A link to a photo looking into one of its beds, taken by a lake resident, is below.
We forwarded our report to Joyce Stille and Kim Welch at the Town of Bolton, John Ward and Steve Krajewski at the Town of Vernon, and Dr. George Knoecklein and his team at NEAR.
Further, we requested that the Town of Vernon ask Dr. Knoecklein to look into the current Middle Lake situation as soon as possible to determine what may have caused the dramatic change in the conditions there and what might be done to address it.
The documentation of our surveys is attached. In the report you will find maps showing the routes taken on Lower and Middle Bolton lakes and tables of the plants spotted at each observation point.
Thanks to all who provided input to help focus our survey and for your continued support.
The top-level finding is that at the time of the survey Lower Bolton Lake was generally clear of obstructive plants but Middle Bolton Lake has experienced prolific growth of both native and non-native aquatic plants.
The key changes noted in the Middle Lake are:
- A significant increase in water clarity well above historical norms;
- widely distributed rapid growth of pondweed and re-growth of variable leaf milfoil;
- obstruction of some waterfront properties by phragmites/cattail beds and lily pads.
We submitted samples of the most prevalent pondweed in Middle Bolton Lake to both Northeast Aquatic Research (NEAR) and the CT Ag Station. Both identified the weed as Potamogetan Bicupulatus, also known as “snailseed pondweed.” Unlike milfoil this plant is not likely to spread through fragmentation but it is a prolific seed-producer. A link to a photo looking into one of its beds, taken by a lake resident, is below.
We forwarded our report to Joyce Stille and Kim Welch at the Town of Bolton, John Ward and Steve Krajewski at the Town of Vernon, and Dr. George Knoecklein and his team at NEAR.
Further, we requested that the Town of Vernon ask Dr. Knoecklein to look into the current Middle Lake situation as soon as possible to determine what may have caused the dramatic change in the conditions there and what might be done to address it.
The documentation of our surveys is attached. In the report you will find maps showing the routes taken on Lower and Middle Bolton lakes and tables of the plants spotted at each observation point.
Thanks to all who provided input to help focus our survey and for your continued support.
As a concerned group of citizens, FBL is dedicated to preserving our lakes (Lower, Middle and Upper Bolton Lakes) and watershed through research, education and public awareness. These lake ecosystems are major natural resources for the Towns of Bolton, Vernon, Coventry and Tolland. Sustaining their environmental quality is the joint responsibility of FBL, these Towns and the State of Connecticut.
Lake Emergency Contacts
To report boating accidents or illegal activity on DEEP property (Boat Launch) call the DEEP at
860-424-3333.
To report trespassing, illegal activity on Town property (beach at Indian Notch) call State Police Resident Trooper at 860-643-6060.
Sewer Emergency Contact info - BLRWPCA (Bolton Lakes Regional Water Pollution Control Authority)
Emergency number during Bolton Town Hall business hours: 860-649-8066 x6111
Emergency number off-hours: 860-375-0112
Routine questions or problems: 860--649-8066 x6111
Lake Emergency Contacts
To report boating accidents or illegal activity on DEEP property (Boat Launch) call the DEEP at
860-424-3333.
To report trespassing, illegal activity on Town property (beach at Indian Notch) call State Police Resident Trooper at 860-643-6060.
Sewer Emergency Contact info - BLRWPCA (Bolton Lakes Regional Water Pollution Control Authority)
Emergency number during Bolton Town Hall business hours: 860-649-8066 x6111
Emergency number off-hours: 860-375-0112
Routine questions or problems: 860--649-8066 x6111