Surface Water Classifications
Presented below are water quality standards that are in effect for Clean Water Act purposes. EPA is posting these standards as a convenience to users and has made a reasonable effort to assure their accuracy. Additionally, EPA has made a reasonable effort to identify parts of the standards that are not approved, disapproved, or are otherwise not in effect for Clean Water Act purposes. May 5, 2020 Surface Water Classifications Effective March 3, 2020 The following WQS document is in effect for Clean Water Act purposes with the exception some waterbodies. This revised document denotes EPA's previously approved/disapproved and reserved actions from: May 22, 2009, November 24, 2009, June 29, 2010, August 19, 2010, November 19, 2010, January 18, 2011, January 5, 2012, December 14, 2015, July 18, 2016, November 22, 2019 and March 3, 2020. Disapprovals are marked in red Reserved actions are marked in light blue Approvals in bright green This revised document denotes EPA's previously approved/disapproved and reserved actions from: May 22, 2009, November 24, 2009, June 29, 2010, August 19, 2010, November 19, 2010, January 18, 2011, January 5, 2012, December 14, 2015, July 18, 2016, November 22, 2019 and March 3, 2020. Disapprovals are marked in Red Reserved actions are marked in light blue Approvals in bright green SURFACE WATER CLASSIFICATION Prepared by: Water Quality Monitoring and Assessment Water Quality Bureau Environmental Services Division July 24, 2019 Iowa Department of Natural Resources Surface Water Classification A. Key to the order of streams. (1) Streams are listed in downstream to upstream sequence within a basin.
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