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Water chemistry and biological information and data on rivers, lakes and wetlands from the Watershed Management Division can be found here:

image of lake champlain
Lake Champlain Chemical and Biological Data
Lake Champlain Long-Term Water Quality and Biological Monitoring Project Data (1992-present)
Lake Champlain image
Lake Champlain Multi-Probe Sonde Profiles
Lake Champlain Long-Term Monitoring Project multi-probe sonde profiles (1992-present). Chlorophyll-A probe results for 2018 and 2019 may be 2-3 times lower than laboratory processed samples for the same station.
Lakes Score Card Image
Vermont Inland Lakes Score Card
See how each lake and pond measures up with the lakes score card
Ariel view of river corridor and floodplain - link to River Corridor and Floodplain Maps
River Corridor & Floodplain Maps
bird's-eye view of river and surrounding geography - link to Stream Geomorphic Assessment Data Viewer
Stream Geomorphic Assessment Data Viewer
USGS logo - link to USGS water resources of New Hampshire and Vermont
USGS water resources of New Hampshire and Vermont
Lake Wise Map
LakeWise Map
View a map of LakeWise participants around the state and lake-specific participation
Cyanobacteria Blue Green Algae Tracker
Cyanobacteria Tracking Map
Department of Health's interactive cyanobacteria (blue-green algae) status map
Person sampling a tributary of Lake Champlain from a bridge
Lake Champlain Tributary Chemical Data
Lake Champlain Long-Term Water Quality and Biological Monitoring Project tributary data (1990 to present)
Man on boat with monitoring equipment. Image of Secchi disk in lower right corner
Lay Monitoring Data
Lay Monitoring Program data (1979 to present)
National Water Quality Monitoring Council Logo
National Water Quality Monitoring Council Data
Vermont EPSCoR Streams Project Logo
Vermont EPSCoR Streams Project Data
DEC staff collecting spring phosphorus samples from boat
Spring Phosphorus Data
Access an archive of water quality data collected during spring phosphorus sampling
Logo of Vermont Integrated Watershed Information System (V-IWIS)
Water Quality Information
Access all data through the Vermont Integrated Watershed Information System
Screen shot of Aquatic Invasive Species map
Aquatic Invasive Species Map
View aquatic invasive species distribution, location of Public Access Greeter Programs, VIP surveyed lakes and more