A watershed is an area of land where water from streams, springs, and wetlands all flow to a common larger body of water, such as Cayuga Lake. The Cayuga Lake Watershed Covers nearly 860 square miles, includes 44 municipalities, and is spread over 7 counties. Click on map to enlarge, or click here for a downloadable version. 

We are developing pages for the Watershed section of this website with summaries and links to around-the-lake water quality monitoring, water uses, water treatment, sewage treatment and other information of interest to watershed residents. 

Scroll down to click on our first page, focused on the south end of Cayuga Lake in Tompkins County.

Also find information in our Resources and Networking sections.

Thanks to our friends at the Community Science Institute for this beautiful map.



MAP of the Cayuga Lake Watershed

A beautiful full color map of Cayuga Lake, all the creeks that drain to it, and several neighboring finger Lakes. By Matt Yarrow of the Community Science Institute.

Wetlands Maps Updated for Tompkins County

"Like sponges, wetlands soak up and store the stormwater from rainstorms and melting snow. This protects downstream lands from flooding, and recharges groundwater. Stormwater is released gradually, slowing water’s erosive power. Wetlands are often referred to as the kidneys of nature, because they trap and store sediment that carries pollutants. The unique soils and plant communities found in wetlands are filters, improving downstream water quality."