Watershed Protection

Big Sioux Aquifer Groundwater Protection Project

The District was the recipient of EPA 319 funds in 1990 to initiate local groundwater protection measures for shallow, unconfined public water supply wells.  Contact Jay Gilbertson for more information. 

County WHPA Maps

Surface Water Quality Assessement Projects: Streams

The District has provided technical and financial support for watershed assessment studies designed to identify the source(s) of the pollutants that are degrading water quality in streams.

Stream Assessments

Surface Water Quality Assessment Projects: Lakes

 The District has provided technical and financial support for watershed assessment studies designed to identify the source(s) of the pollutants that are degrading water quality in lakes.

Lake Assessments

Big Sioux River Surface Water Implementation Project

The Central and North-Central Big Sioux River Watershed Assessments identified several areas of the Big Sioux River and various tributaries not meeting their designated uses due to impairments from total suspended solids and/or fecal coliform bacteria.  An implementation project is currently ongoing addressing these issues. 

Implementation Projects

Big Sioux River Bank Stability Project

In 2007, scientists from the National Sedimentation Laboratory in Oxford, Mississippi collected geotechnical data from five areas along the Big Sioux River near Castlewood, Bruce, Brookings, Egan, and Renner.  

BSR Bank Stability Project

Water Quality Monitoring Projects

The District continuously monitors Water Quality Monitoring Sites along the Big  Sioux River.  In addition, nitrates are monitored at various stream sites throughout the District.

Water Quality Monitoring