2025 Weekly Cyanobacteria Emails to the Community

Thank you for signing up to receive the Lake Champlain Committee (LCC) Cyanobacteria monitoring reports! In this email, you will find details of Week 21 monitoring results. This marks the final monitoring report of the 2025 season. Click the links to see late-season cyanobacteria activity at Halls Lake, lingering green nearshore blooms at Shelburne Pond, and clear waters at Shelburne Farms marking the close of the 2025 monitoring season.

Thank you for signing up to receive the Lake Champlain Committee (LCC) Cyanobacteria monitoring reports! In this email, you will find details of Week 20 monitoring results. Click the links to view green waters at Graveyard Point in North Hero, vivid swirling patterns at Halls Lake in Newbury, a contained nearshore bloom at Port Kent Beach in Chesterfield, and clear waters with a monarch sighting at Shipyard Point in Highgate.

Thank you for signing up to receive the Lake Champlain Committee (LCC) Cyanobacteria monitoring reports! In this email, you will find details of Week 19 monitoring results. Click the links to see a high alert bloom at St. Anne’s Shrine in Isle La Motte, benthic cyanobacteria globules at Holcomb Boat Launch, subtle traces of cyanobacteria at Graveyard Point West in North Hero, and the lingering bloom conditions in Lake Memphremagog.

Thank you for signing up to receive the Lake Champlain Committee (LCC) Cyanobacteria monitoring reports! In this email, you will find details of Week 18 monitoring results. Click the links to see the lingering late-season bloom in North Hero, the vibrant green waters at Shelburne Pond, a swirl of green and teal at Graveyard Point, a bright surface bloom at North Harbor, and the serene fall waterscape along the clear shoreline.

Thank you for signing up to receive the Lake Champlain Committee (LCC) Cyanobacteria monitoring reports! In this email, you will find details of Week 17 monitoring results. Click the links to see a thick surface cyanobacteria bloom at Halls Lake, a benthic bloom at Holcomb Boat Launch on Lake Champlain, continuing dense, pea-soup green blooms on Halls Lake, and a calm clear water scene at Shelburne Farms.

Thank you for signing up to receive the Lake Champlain Committee (LCC) Cyanobacteria monitoring reports! In this email, you will find details of Week 16 monitoring results. Click the links to see a mixed bloom with different types of cyanobacteria at Graveyard Point, patchy cyanobacteria mats at North Harbor, persistent bright green blooms at Shelburne Pond, and a muted green cyanobacteria blending into the fall-colored surroundings at Lake Memphremagog.

Thank you for signing up to receive the Lake Champlain Committee (LCC) Cyanobacteria monitoring reports! In this email, you will find details of Week 15 monitoring results. Click on the links to see a foggy fall bloom, low alert conditions in Main Lake South, cyanobacteria swirls at Newport Marina, mostly clear conditions in Plattsburgh, NY, and cloudy skies and conditions in Highgate Springs, VT.

Thank you for signing up to receive the Lake Champlain Committee (LCC) Cyanobacteria monitoring reports! In this email, you will find details of Week 14 monitoring results. Click on the links to see a dense green bloom in QC, a high alert at Shelburne Pond, the green and teal colors of Highgate Springs, cool clear conditions in Burlington, and shades of blooms around the lake.

Thank you for signing up to receive the Lake Champlain Committee (LCC) Cyanobacteria monitoring reports! In this email, you will find details of Week 13 monitoring results. Click on the links to see a paint-like bloom at Venise-en-Québec shoreline, a green sheen bloom at Black Bridge in St. Albans Town, a faint green haze at North Beach in Burlington, an intense bright green layer at the U.S. Coast Guard Boat Access Ramp in Burlington, and clear waters at Alburgh Dunes State Park.

Thank you for signing up to receive the Lake Champlain Committee (LCC) Cyanobacteria monitoring reports! In this email, you will find details of Week 12 monitoring results. Click on the links to see a paint-like green bloom at Philipsburg Boat Launch, dense mats coating the shoreline at Philipsburg, vibrant green waters at North Hero Marina, bright teal and green cyanobacteria patches at Parc Jameson, and speckled green patterns at Rock Point Eagle Bay.

Thank you for signing up to receive the Lake Champlain Committee (LCC) Cyanobacteria monitoring reports! In this email, you will find details of Week 11 monitoring results. Click on the links to see teal tinted waters at Parc Jameson, patches of green from a low alert at Graveyard Point East, green waters at Shelburne Pond, tiny cyanobacteria observed at Black Bridge in St. Albans, and specks of cyanobacteria in a jar sample at Graveyard Point West.

Thank you for signing up to receive the Lake Champlain Committee (LCC) Cyanobacteria monitoring reports! In this email, you will find details of Week 10 monitoring results. Click on the links to see bright green surface accumulations at Shipyard in Highgate Springs, thick swirling scums at Philipsburg, nearshore pea soup conditions at Lakeshore Park in Alburgh later in the week, patchy shoreline blooms at Graveyard Point in North Hero, and clear water conditions at Burlington’s Triangle Beach.

Thank you for signing up to receive the Lake Champlain Committee (LCC) Cyanobacteria monitoring reports! In this email, you will find details of Week 9 monitoring results. Click on the links to see continuing bloom activity at Lake Carmi, cyanobacteria accumulations on the Poultney River, green conditions before the teal shift in Venise-en-Québec, pea soup green conditions at Alburgh Springs in Alburgh, VT, and clear water conditions at Knapp Pond.

Thank you for signing up to receive the Lake Champlain Committee (LCC) Cyanobacteria monitoring reports! In this email, you will find details of Week 8 monitoring results. Click on the links to see a pink bloom at Silver Lake in Barnard, green surface streaks at the Philipsburg Boat Launch, a cyanobacteria bloom on the Connecticut River in Hinsdale, our Monitor Spotlight video featuring LCC Monitor Jeff van den Noort, and clear conditions at Shelburne Farms North Beach.
 

Thank you for signing up to receive the Lake Champlain Committee (LCC) Cyanobacteria monitoring reports! In this email, you will find details of Week 7 monitoring results. Click on the links to see a yellow-brown bloom at Maquam Shore in St. Albans, a dense high alert bloom at the Shelburne Pond boat launch, subtle surface accumulations off Champlain Avenue in Philipsburg, our Monitor Spotlight featuring LCC Monitor Carol Yarnell, and a teal-tinted surface bloom in Pleasant Bay in North Ferrisburgh.
 

Thank you for signing up to receive the Lake Champlain Committee (LCC) Cyanobacteria monitoring reports! In this email, you will find details of Week 6 monitoring results. Click on the links to see a dense surface scum bloom at Parc Jameson in Venise-en-Québec, striking streaks at Graveyard Point in North Hero, a yellow-brown swirling bloom along the rocky shoreline at Cohen Park in St. Albans, our Monitor Spotlight featuring LCC Monitor Amy O’Meara, and serene scenes from around Lake Champlain.

Thank you for signing up to receive the Lake Champlain Committee (LCC) Cyanobacteria monitoring reports! In this email, you will find details of Week 5 monitoring results. Click on the links to see a dense jar of cyanobacteria from a high alert bloom at Black Bridge in St. Albans Bay, meet dedicated volunteers Lois and Richard Rawson in our Monitor Spotlight, view a Category 2 bloom at Crater Club in Essex, NY, examine a Category 3 surface bloom from Venise-en-Québec, and check out clear conditions at Allen Brothers Marsh in Westminster, VT.

Thank you for signing up to receive the Lake Champlain Committee (LCC) Cyanobacteria monitoring reports! In this email, you will find details of Week 4 monitoring results. Click on the links to see a dense bloom at Corlear Bay, meet part of the Burlington Parks team in this week's Monitor Spotlight, view striking swirls of blue and green in Keeseville, check out a thick surface bloom at Shelburne Pond, and observe a high alert bloom in Whiskey Bay.

Thank you for signing up to receive the Lake Champlain Committee (LCC) Cyanobacteria monitoring reports! In this email, you will find details of Week 3 monitoring results. Click on the links to see scenes of beachgoers unknowingly in bloom conditions, view a high-alert report from Alburgh Dunes State Park, check out bloom activity in Missisquoi Bay, meet Paul Smith in this week's Monitor Spotlight, and take in a beautiful clear-water view.

Thank you for signing up to receive the Lake Champlain Committee (LCC) Cyanobacteria monitoring reports! In this email, you will find details of Week 2 monitoring results. Click on the links to familiarize yourself with the public cyanobacteria tracker map where you can view the latest reports, learn about cyanobacteria, celebrate three generations of monitors, meet monitors Laurie Sedlmayr and Alfred Cummings in our weekly Monitor Spotlight, and check out early activity at Sandbar Beach in Québec.

Thank you for signing up to receive the Lake Champlain Committee (LCC) Cyanobacteria monitoring reports! Monitoring began the week of June 15 and will run through early fall. Each week we’ll send you an update about conditions monitors are finding on Lake Champlain and at select inland Vermont lakes. This week’s report covers results from Sunday, June 15 through Saturday, June 21, 2025. If you’d like to learn more about cyanobacteria or join our monitoring team please sign up here. We will also hold informational sessions about how to recognize cyanobacteria later in the summer, so stay tuned.