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Hobbs Springs, Fox Illinois basin. Courtesy of Wisconsin DNR, 2010.

Hobbs Springs, Fox Illinois basin.

Contact information
Lisa Helmuth
Water Quality Bureau

Southeast Fox Illinois River basin

Description

About the basin

The Southeast Fox River basin is located in portions of seven counties, contains (entirely or portions of) 10 cities, 22 villages, 42 towns and is home to about 500,000 people. The basin is divided into seven watersheds. Three of the watersheds (Upper, Middle and Lower Fox River) contain the Fox River from start to finish and collectively occupy nearly half the basin area (513 square miles). The other watersheds are named after the major rivers they contain. Collectively the seven watersheds contain about 750 miles of perennial streams, over 600 miles of intermittent streams, 78 named lakes and impoundments and many unnamed lakes and ponds. wetlands encompass nearly 78,000 acres, or 11 percent of the basin land area.

Basin resources

The Fox River basin contains nearly 700 miles of streams draining over 1000 square miles of land. Most of the stream miles in the basin are considered full fish and aquatic life streams, meaning they are capable of meeting water quality standards and have the ability to support a full range of fish and aquatic life as habitat and water quality allow. Portions of four streams (9.2 total stream miles) and two lakes within the Southeast Fox River basin are designated as outstanding or exceptional resource waters. See the Surface Water Data Viewer to view details about the basin.

Map Code River/Lake Watershed Name River/Lake Watershed Name Watershed Code Hydrologic Unit Code (HUC) Plan Expiration Date Plan Classification
MM St. Croix River Basin St. Croix River Basin [PDF] SC01-SC22 07030001, 07030002, 07030005 2025 Other
A Balsam Branch Balsam Branch [PDF] SC05 0703000508 2016 Expiring
B Beaver Dam River Beaver Dam River [PDF] UR03 0709000109 2019 Priority
C Big Wood Lake Big Wood Lake [PDF] SC11 0703000501 2019 Priority

Watersheds, waters

Water resource information for specific watersheds

Watershed details Watershed size Streams, lakes, bays & harbors Counties Water management unit (WMU) Major drainage system
Des Plaines River 133.34 mi 2 FX01 Water lists Kenosha, Racine Fox (IL) Mississippi River
Lower Fox River - Illinois 114.04 mi 2 FX02 Water lists Kenosha, Racine, Walworth Fox (IL) Mississippi River
Middle Fox River - Illinois 247.72 mi 2 FX04 Water lists Milwaukee, Racine, Walworth, Waukesha Fox (IL) Mississippi River
Mukwonago River 86.21 mi 2 FX06 Water lists Jefferson, Walworth, Waukesha Fox (IL) Mississippi River
Sugar and Honey Creeks 166.22 mi 2 FX05 Water lists Racine, Walworth Fox (IL) Mississippi River
Upper Fox River - Illinois 151.08 mi 2 FX07 Water lists Washington, Waukesha Fox (IL) Mississippi River
White River and Nippersink Creek 168.35 mi 2 FX03 Water lists Kenosha, Racine, Walworth Fox (IL) Mississippi River

Plans

Watershed plans

One watershed plan has been updated in this basin. This documents are updates to the Central Wisconsin basin plan (see below). Contact Lisa Helmuth for information.

Basin plan 2002

Last revised: Thursday January 21 2016