The 2018 South Dakota Integrated Report for Surface Water Quality Assessment
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THE 2018 SOUTH DAKOTA INTEGRATED REPORT FOR SURFACE WATER QUALITY ASSESSMENT Protecting South Dakota’s Tomorrow…Today Prepared By SOUTH DAKOTA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES STEVEN M. PIRNER, SECRETARY SOUTH DAKOTA WATER QUALITY WATER YEARS 2012-2017 (streams) and WATER YEARS 2007-2017 (lakes and mercury in fish tissue) The 2018 South Dakota Integrated Report Surface Water Quality Assessment By the State of South Dakota Pursuant to Sections 305(b), 303(d), and 314 of the Federal Water Pollution Control Act South Dakota Department of Environment and Natural Resources Steven M. Pirner, Secretary Table of Contents I. INTRODUCTION ............................................................................................................................................. 4 II. EXECUTIVE SUMMARY ............................................................................................................................... 5 III. SURFACE WATER QUALITY ASSESSMENT .......................................................................................... 7 SURFACE WATER QUALITY MONITORING .................................................................................................... 7 SOUTH DAKOTA’S LONG-TERM VISION STRATEGY ................................................................................. 14 METHODOLOGY .................................................................................................................................................. 20 STATEWIDE SURFACE WATER QUALITY SUMMARY ................................................................................ 34 LAKE WATER QUALITY ASSESSMENT .......................................................................................................... 38 STATEWIDE PROBABILISTIC LAKE ASSESSMENT .................................................................................... 40 KEY FOR RIVER BASIN INFORMATION TABLES ......................................................................................... 48 WETLANDS ......................................................................................................................................................... 128 PUBLIC HEALTH/AQUATIC LIFE CONCERNS ............................................................................................. 130 IV. POLLUTION CONTROL PROGRAMS .................................................................................................... 135 POINT SOURCE POLLUTION CONTROL PROGRAM ................................................................................ 135 COST/BENEFIT ASSESSMENT ...................................................................................................................... 137 NONPOINT SOURCE POLLUTION CONTROL PROGRAM ....................................................................... 137 V. PUBLIC PARTICIPATION PROCESS ..................................................................................................... 143 VI. REFERENCES ............................................................................................................................................ 144 VII. KEY TO ABBREVIATIONS ....................................................................................................................... 146 APPENDICES ......................................................................................................................................................... 147 APPENDIX A ................................................................................................................................................... 148 WATERBODIES WITH EPA APPROVED TMDLS .................................................................................... 148 APPENDIX B ................................................................................................................................................... 162 DENR 2018 WATERBODY DELISTING REPORT .................................................................................... 162 APPENDIX C ................................................................................................................................................... 165 AUIDs Where Fecal Coliform Was Removed as a Cause ........................................................................ 165 APPENDIX D ................................................................................................................................................... 167 303(D) SUMMARY.......................................................................................................................................... 167 APPENDIX E ................................................................................................................................................... 175 ECOREGION MAPS ...................................................................................................................................... 175 Level 3 Ecoregion ........................................................................................................................................... 176 APPENDIX F ................................................................................................................................................... 178 PUBLIC COMMENTS .................................................................................................................................... 178 i Figures Figure 1: Location of Ecoregion 46 excluding 46c within South Dakota ............................................................. 25 Figure 2: Size Distribution of Fishery Classified Lakes in South Dakota ............................................................. 41 Figure 3: Temperature Distributions by Fishery Beneficial Use ........................................................................... 44 Figure 4: Major River Basins in South Dakota ....................................................................................................... 46 Figure 5: 2018 South Dakota Waterbody Status .................................................................................................... 47 Figure 6: Bad River Basin ......................................................................................................................................... 51 Figure 7: Belle Fourche River Basin ........................................................................................................................ 59 Figure 8: Upper Big Sioux River Basin ................................................................................................................... 70 Figure 9: Lower Big Sioux River Basin ................................................................................................................... 71 Figure 10: Upper Cheyenne River Basin ................................................................................................................. 80 Figure 11: Lower Cheyenne River Basin ................................................................................................................. 81 Figure 12: Grand River Basin .................................................................................................................................. 85 Figure 13: Upper James River Basin ....................................................................................................................... 95 Figure 14: Lower James River Basin ....................................................................................................................... 96 Figure 15: Little Missouri River Basin .................................................................................................................... 99 Figure 16: Minnesota River Basin .......................................................................................................................... 103 Figure 17: Upper Missouri River Basin ................................................................................................................. 110 Figure 18: Lower Missouri River Basin ................................................................................................................ 111 Figure 19: Moreau River Basin .............................................................................................................................. 114 Figure 20: Niobrara River Basin ............................................................................................................................ 117 Figure 21: Red River Basin ..................................................................................................................................... 120 Figure 22: Vermillion River Basin ......................................................................................................................... 124 Figure 23: White River Basin ................................................................................................................................. 127 Figure 24: Map Depicting Prairie Pothole Region ................................................................................................ 128 ii Tables Table 1: Atlas ............................................................................................................................................................. 6 Table 2: South Dakota Vision Priority Waters ................................................................................................ 17 Table 3: Criteria for Determining Support Status ..........................................................................................