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SOUTH DAKOTA Department of
Agriculture & Natural Resources

Protecting South Dakota's Tomorrow...Today!
Joe Foss Building
523 E Capitol Ave
Pierre, SD 57501-3182
Contact Us  Field Offices

Surface Water

Water Quality Monitoring Network

Photograph of the Redwater River in western South DakotaThe Department of Environment and Natural Resources maintains an extensive surface water quality monitoring network at many of South Dakota's streams. There are currently 153 active ambient monitoring stations across the state. The data from these sampling stations helps the Department identify problems, document improvements and demonstrate overall trends in the quality of South Dakota waters.

Quality Assurance Project Plan

Standard Operating Procedures

Water Quality Monitoring Station Information

Water Quality Monitoring Station Map

Water Quality Standards Mapping Application

DENR Water Quality Monitoring Access Portal

Analysis Groups (Field and Laboratory Parameters)

Download Data at the Water Quality Portal

  • Search by Station ID# (located in the Water Quality Monitoring Station Information link)
  • Search by organization ID:  SDDENR_WQX

For more information, contact Aaron Leingang or call (605) 773-3351.


Photograph of Pat Snyder performing field filtering of a water sample.

As stated above, South Dakota conducts sampling at numerous stream sites throughout the state. This information is entered into a national database called "WQX," which stands for Water Quality Exchange.

Water quality information from these sites can be obtained from the Water Quality Portal, and is used to develop Surface Water Discharge Permits and evaluate ambient stream quality. For more information, contact Aaron Leingang or by calling (605) 773-3351.