The geographic focus of the Tri-State Watershed Alliance (TSWA) is the St. Joseph, St. Marys, and Upper Maumee watersheds that are part of the larger Western Lake Erie Basin.
What is a watershed?
A watershed is an area of land that drains all the streams and rainfall to a common outlet such as the outflow of a reservoir, mouth of a bay, or any point along a stream channel. Scientists use a Hydrologic Unit Code to identify each hydrologic unit. The number of digits assigned to an area of land varies depending on whether it is being used to identify a large watershed, such as the Great Lakes Basin, or a smaller watershed such as the St. Marys River watershed.
Watershed Management Plan
A watershed management plan (WMP) helps to define and guide a strategy for achieving water resource goals for a geographically defined watershed.
WMPs have been developed for various watersheds in the focus area of the Tri-State Watershed Alliance:
What watershed are you in?
The following online tools can help you find
what watershed you are in: