Every year, more data about Lake Champlain and its watershed is posted online. The data is collected by many entities such as local, state, and federal groups, students, universities, and volunteer groups. The links posted here are organized by category. Please contact us if you would like us to link to a site.

• Aquatic Invasive Plant Location Maps in Adirondacks (APIPP)
• Lake Champlain Zebra Mussel Monitoring Program (VT DEC)
• Zebra Mussel Distribution in U.S. Lakes Map
• Zebra Mussel Query by State (USGS) *Maps up-to-date national observations
• Zebra Mussel Distribution in North America *Animated map of US progression

• Lake Champlain Data - Lake Levels and Temperature (NOAA) *Near bottom of page
• Lake Champlain Gage in Burlington, VT at ECHO (USGS)
• New York Current Surface Water Conditions (USGS)
• Niveau d'eau à la station Lac Champlain à St. Armand, Quebec / Lake Champlain Water Level at St. Armand, Quebec (QC MENV, French only)
• Northeast River Forecast Center (NOAA)
• Real-Time Stream Flow Data (USGS)
• Stations hydrométriques du Quebec / Hydrometric Stations in Quebec (QC MENV, French only) *Click on the map for stations near Missisquoi Bay

• Adirondack GIS Data (NYSGIS)
• Adirondack GIS Information (APA)
• Adirondack Land Classification Maps (ADK GIS Users Group)
• Atlas sur l’état de l'environnement au Québec / Atlas on the State of Quebec's Environment (QC MENV, French only)
• Cornell University Geospatial Information Repository
• Lake Champlain Basin Atlas (LCBP)
• Lake Champlain Basin Downloadable GIS Data Layers (VCGI) *Choose LCBP under "Data Bundles"
• Lake Champlain Clean & Clear Mapping Site *Online GIS layers for Vermont portion of LC Basin.
• The National Map (USGS)
• Vermont ANR Agency Maps and Mapping (VT ANR)
• VT DEC Maps, Mapping Programs and GIS Information (VT DEC)
• Vermont Center for Geographic Information (VCGI)
• Vermont Town Highway Maps (VTrans)

• Vermont Monitoring Cooperative
• Vermont Real-time Air-Quality Data (VT DEC)

• Adirondack Lake Data (ADK Lakes Survey Corporation)
• Burlington Beach Closings, Water Quality and Other Environmental Data (Burlington Eco-Info)
• Burlington Stormwater Data (Bacteria, Sediments, Phosphorus)
• Colchester Swim Advisory Website (Beach Closing Info)
• Englesby Brook Project - Burlington, Vermont (USGS)
• Lake Water Quality Summary Reports (VT DEC Vermont Lay Monitoring Program)
• Lake Champlain Long-Term Water Quality and Biological Monitoring Project (VT DEC)
• Liste des plages admissibles pour la région administrative de la Montérégie et Classification de la qualité bactériologique des eaux de baignade / List of Public Beaches in the Montérégie Region and Bacterial Sampling for Swimming (QC MENV, French only)
• Mad River Watch E. Coli Sampling
• Shelburne Bay Monitoring Project
• Portrait global de la qualité de l'eau des principales rivières du Québec: 2004 / Global Picture of the Water Quality in Major Quebec Rivers: 2004 (QC MENV, French only)
• Vermont 2004 Water Quality Assessment Report-305B (VT DEC) *289 KB PDF
• Vermont Water Quality Gateway (Watershed Alliance Student Monitoring)

• Burlington/Regional Forecasts (National Weather Service) *Covers most of LC Basin
• Daily Snowfall Map of the Northeast (NOAA)
• Dates of Lake Champlain Closing (Freezing) (NOAA)
• Lake Champlain Open Waters Forecast (NOAA)
• Live Weather at ECHO on Burlington Waterfront (WPTZ)
• Meteological Service of Canada