Rock River Basin Watersheds

What is a Watershed?

It’s the land that water flows across or under on its way to a stream, river or lake.

Rock River Basin Watersheds

Visit our interactive Stream Monitoring Map to access information about and to view watersheds.

Here is a list of all of the major watersheds in the Rock River Basin, along with resources to learn more about their waters and join the efforts of different organizations.

What is a HUC?

A Hydrologic Unit Code (HUC) is a way for the USGS to delineate watersheds across the country. They begin on large levels and move down to specifics. The Rock River Basin comprises two subbasins (HUC 8) and several more watersheds (HUC 10) and subwatersheds (HUC12).

HUC 8: subbasin > HUC 10: watershed > HUC 12: subwatershed

Resource for all: 

Upper Rock River (07090001)

WI DNR Upper Rock River Basin 
WI DNR Rock River Recovery Project Portal

Middle Rock (07090002)

WI DNR Lower Rock River Basin