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Know Your Watershed is coordinated by Conservation Technology Information Center.

Watershed Address

Over the years a system for identifying and number watersheds has been developed in the United States.  Through this system all U.S. watersheds have a proper name and a corresponding number (see below). The watershed's number is commonly called it's "watershed address."

Watershed address system
Description Proper Name


Region Ohio River 05
Subregion Wabash, Patoka & White Rivers 0512
Basin Wabash River 051201
Subhead Vermilion River 05120109
Watershed North Fork Vermilion 0512010909
Subwatershed   Lake Vermilion 051201090905

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