Watersheds
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Lower Wisconsin River Basin
The Lower Wisconsin River basin drains approximately 4,940 square miles of south-central and southwestern Wisconsin. The basin includes the Wisconsin River from the Castle Rock Flowage dam to its confluence with the Mississippi River near Prairie du…
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Lower Rock River surface water quality report
The Lower Rock River in south-central Wisconsin extends 48 miles from Fort Atkinson to the Illinois-Wisconsin border at Beloit. A large, low velocity, warmwater river, it is classified as warmwater sport fishery. The main stem only partially…
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Lower Rock River groundwater
Groundwater is an important resource of the Lower Rock River basin. It is the source of almost all water used for domestic, agricultural, commercial and industrial purposes in the basin. All of the basin's residents rely on groundwater for potable…
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Lower Rock River geologic and geographic setting
The Lower Rock River basin includes the portion of the Rock River below Fort Atkinson and its tributaries. The Bark River originates in Washington County and traverses the southern Kettle Moraine region before emptying into the Rock at Fort Atkinson…
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Groundwater contaminants
Wisconsin DNR maintains a groundwater database. Sampling is conducted for the purpose of problem assessment, at-risk monitoring and some regulatory monitoring. Many of the sampling events are focused on problem areas. The Groundwater Retrieval…
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Lower Rock River basinwide issues
For more information about stormwater management, connect to the Center for Watershed Protection [exit DNR].
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Basin programs and activities
DNR policies on how to protect waters from degradation The creation of Chapter NR 207 "Water Quality Antidegradation" and changes to NR 102 "Water Quality Standards for Wisconsin Surface Waters", Wisconsin Administrative Code, allows DNR to…
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Lower Rock River Basin
The Rock River basin covers over 3,700 square miles and is located in the south-central part of Wisconsin. The basin's natural resources are the legacy of the last period of Wisconsin glaciation. Many Native American tribal peoples lived here…
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Lower Fox River basin
The Lower Fox River basin is located in northeastern Wisconsin and encompasses the following counties: Brown, Calumet, Outagamie and Winnebago. The 638 square mile (1,654 square kilometers) drainage basin is bordered by the Twin Door Kewaunee basin…
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Lower Chippewa River Basin
Downstream from Eau Claire on the Chippewa River and downstream from Menomonie on the Red Cedar contains more rare species (125) and more native prairie (25% of the state total) than any area of comparable size in Wisconsin. These unique natural…