Door-Kewaunee Watershed

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Hydrologic Unit Code: 04030102

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Watershed Overview

The Door-Kewanee Watershed is approximately 767 square miles in size with 65% of the watershed area is engaged in agriculture. Summer homes and tourism make up a bulk of the economy in the area, yielding a multitude of recreational activities including hiking, birding, camping, rafting, canoeing, hunting, fishing, and boating on Lake Michigan and Green Bay. Between 1996 and 2001, there have been slight increases in developed land, grassland, and barren land, and a slight decrease in farmland.

There are critical ecological systems on the Door Peninsula that include bedrock shoreline with semi-protected and open wetlands with sand near shore, large spring fed lakes, shallow dune lakes, and small coastal streams on shallow till over bedrock and lacustrine sand. These ecosystems along with the diversity of the islands, forests, wetlands, sand dunes, and ridge and swale topography, provide habitat to an abundance of rare, threatened and endangered plants and animals. Specifically, the Great Lakes Beach, the Midwest Calcareous Floating Mat, the Juniper Alvar Shrubland, and the Mixed Emergent Deep March are designated critical habitats and Cat Island is a critical migratory shorebird stopover site.

The grasslands over the watershed area, which support over 105 bird species, are managed by prescribed burns and mowing. Great Lakes fisheries provide lake trout, lake whitefish, salmon and yellow perch.

Additional information is available at Michigan State University's Institute for Water Research's Digital Watershed Tool at: This site has interactive watershed-based information on industrial facilities discharge sites, toxic release inventory, permit compliance system, water quality stations, bacteria stations, national sediment inventory stations, best management practices, water quality observation stations, weather data stations, impaired waters (reach and area), landcover change (1992-2001), landuse 2001, soil, and elevation.

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Watershed Activities

In 2000, the Lakeshore Basin Partnership Team, which includes the Door-Kewaunee watershed, identified a list of priorities of the most pressing issues impacting the natural resources in the watershed. The priorities that were identified are 1.) The loss of riparian (stream and lakeside) buffers (streamside habitat), 2.) Inadequate identification and protection of wetlands, wetland corridors, and groundwater treatment areas, 3.) The need for better land use planning and improved local zoning, 4.) Inadequate management and protection of woodlots, 5.) Absence of a stewardship ethic, 6.) Loss of small farms and/or conversion to large farms, 7.) Contamination of drinking water, 8.) Illegal dumping of toxins, 9.) Loss of biodiversity, and 10.) The loss of shoreline habitat.

The focus of the watershed’s activities include: addressing water quality problems from in place pollutants, dams, urban and agricultural runoff, preserving biodiversity and protecting threatened and endangered species, protecting large contiguous blocks of forestland, grassland, and wetland that serve as habitat for mammals, birds and amphibians, providing a large, self sustaining forest ecosystem, and additional monitoring efforts of wildlife populations, water quality, and ecosystem function.

Watershed Groups

For more information, see the USEPA “Surf Your Watershed” website at

The Door-Kewaunee Watershed as defined by the USGS is part of the WDNR’s Lakeshore Basin Management Area. For more information, see the Wisconsin Department of Natural Resources’ “Wisconsin’s Basins” website at

Information on other Lake Michigan subwatersheds can be found at:

Watershed Data and Information

USGS Water Resources Links for: 04030102 - Door-Kewaunee

USGS State Information and Contacts:

Current Water Data:

All Water Data (Current and Historic Sites):

Other Data Links:

Current Regional/National Conditions:

Search USGS for Links, Publications and Web Sites Associated with:

EPA Links for the the Door-Kewaunee - HUC 04030102:

Impaired (303d) Waters

A listing of impaired waters can be found on the U.S. EPA website at the Impaired Waters website


Watershed Management Tools

Tools for addressing impairments in the watershed can be found at the Lake Michigan Lakewide Management Plan Watershed Tools page. Specific Lake Michigan Lakewide Management Plan Watershed Tools can be found at the following pages:

Subwatersheds of the Door-Kewaunee Watershed

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Information on other Lake Michigan subwatersheds can be found at: Lake Michigan Subwatershed Information
HUC Watershed Name
04030102 0101 Mink River and Washington Island-Frontal Lake Michigan
04030102 0102 Three Springs Creek-Frontal Lake Michigan
04030102 0103 Mud Lake-Frontal Lake Michigan
04030102 0104 Fish Creek-Frontal Green Bay
04030102 0105 Kangaroo Lake-Frontal Lake Michigan
04030102 0106 Hibbard Creek-Frontal Lake Michigan
04030102 0107 Logan Creek-Frontal Lake Michigan
04030102 0108 Egg Harbor-Frontal Green Bay
04030102 0109 Lilly Bay Creek
04030102 0110 Big Creek-Frontal Sturgeon Bay
04030102 0201 Stony Creek-Frontal Lake Michigan
04030102 0202 Rio Creek
04030102 0203 Silver Creek
04030102 0204 Ahnapee River
04030102 0205 Mashek Creek-Frontal Lake Michigan
04030102 0301 Headwaters Kewaunee River
04030102 0302 School Creek
04030102 0303 Scarboro Creek
04030102 0304 Casco Creek-Kewaunee River
04030102 0305 Kewaunee River
04030102 0401 Strawberry Creek-Frontal Sturgeon Bay
04030102 0402 Larson Creek-Frontal Green Bay
04030102 0403 Keyes Creek-Frontal Green Bay
04030102 0404 Sugar Creek-Frontal Green Bay
04030102 0405 Renard’s Creek-Frontal Green Bay
04030102 0406 Red River-Frontal Green Bay
04030102 0407 Gilson Creek-Frontal Green Bay