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Galena watershed
Galena River

Contact information
Lisa Helmuth
Water Quality Bureau

The Grant Platte/Sugar Pecatonica basins

Description

About the basin

The Grant-Platte/Sugar-Pecatonica basins are located in the southwest corner of the state and are divided into the Grant and Platte River basins, which flow directly into the Mississippi and the Sugar-Pecatonica basin, which join in Illinois and flow into the Rock River. With 137,000 people and 485,000 cattle and calves, the area's landscape and economy are dominated by agriculture. Lafayette County boasts that it does not have a single stoplight!

Explore the following links to learn more about the natural resources and related activities in the GPSP basin. Enjoy!

UW Extension Partners [exit DNR]

Upper Sugar River Watershed Association [exit DNR]

Watersheds, waters

Grant Platte watershed, water details

Watershed name/view details Watershed size Lists (Streams, lakes, bays & harbors) Counties Water management unit (WMU) Major drainage system
Galena River 241.84 mi 2 GP01 Water lists Grant, Lafayette Grant - Platte Mississippi River
Little Platte River 154.94 mi 2 GP03 Water lists Grant, Iowa, Lafayette Grant - Platte Mississippi River
Lower Grant River 129.75 mi 2 GP04 Water lists Grant Grant - Platte Mississippi River
Middle Grant River 79.86 mi 2 GP05 Water lists Grant Grant - Platte Mississippi River
Mississippi River 110.47 mi 2 GP07 Water lists Crawford, Grant Grant - Platte Mississippi River
Platte River 197.74 mi 2 GP02 Water lists Grant, Iowa Grant - Platte Mississippi River
Upper Grant River 106.09 mi 2 GP06 Water lists Grant Grant - Platte Mississippi River

Sugar Pecatonica watershed, water details

Watershed name/view details Watershed size Lists (Streams, lakes, bays & harbors) Counties Water management unit (WMU) Major drainage system
Allen Creek and Middle Sugar River 154.01 mi 2 SP13 Water lists Dane, Green, Rock Sugar - Pecatonica Mississippi River
Gordon Creek 76.9 mi 2 SP05 Water lists Dane, Green, Iowa, Lafayette Sugar - Pecatonica Mississippi River
Honey and Richland Creeks 80.09 mi 2 SP01 Water lists Green Sugar - Pecatonica Mississippi River
Jordan and Skinner Creeks 94.06 mi 2 SP02 Water lists Green, Lafayette Sugar - Pecatonica Mississippi River
Little Sugar River 133.02 mi 2 SP14 Water lists Dane, Green Sugar - Pecatonica Mississippi River
Lower East branch Pecatonica Rivers 144.8 mi 2 SP03 Water lists Green, Iowa, Lafayette Sugar - Pecatonica Mississippi River
Lower Middle Sugar River 56.4 mi 2 SP12 Water lists Green, Rock Sugar - Pecatonica Mississippi River
Lower Pecatonica River 134.23 mi 2 SP07 Water lists Lafayette Sugar - Pecatonica Mississippi River
Lower Sugar River 217.85 mi 2 SP11 Water lists Green, Rock Sugar - Pecatonica Mississippi River
Middle Pecatonica River 186.42 mi 2 SP08 Water lists Iowa, Lafayette Sugar - Pecatonica Mississippi River
Mineral Point and Sudan branches 108.26 mi 2 SP09 Water lists Iowa, Lafayette Sugar - Pecatonica Mississippi River
Upper East branch Pecatonica River 140.18 mi 2 SP06 Water lists Dane, Iowa, Lafayette Sugar - Pecatonica Mississippi River
Upper Sugar River 105.96 mi 2 SP15 Water lists Dane, Green Sugar - Pecatonica Mississippi River
Upper West branch Pecatonica River 77.75 mi 2 SP10 Water lists Grant, Iowa, Lafayette Sugar - Pecatonica Mississippi River
West branch Sugar River - Mt. Vernon Creek 66.74 mi 2 SP16 Water lists Dane Sugar - Pecatonica Mississippi River
Yellowstone River 57.46 mi 2 SP04 Water lists Iowa, Lafayette Sugar - Pecatonica Mississippi River

Plans

Watershed plans

Multiple watershed plans have been updated in this basin. These documents are updates to the Grant Platte - Sugar Pecatonica basin plan (see below).

State of the basin (2002)

Last revised: Tuesday March 15 2016