Thief River Watershed Monitoring and Assessment Report
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z c s Thief River Watershed Monitoring and Assessment Report July 2014 Authors The MPCA is reducing printing and mailing costs MPCA Thief River Watershed Report Team: by using the Internet to distribute reports and Chad R. Anderson, Mike Bourdaghs, Andy Butzer, information to wider audience. Visit our website David Duffey, Amy Garcia, Benjamin Lundeen, for more information. Bruce Monson, Shawn Nelson, Scott Niemela, Denise Oakes, Mike Sharp MPCA reports are printed on 100 percent post- consumer recycled content paper manufactured Contributors / acknowledgements without chlorine or chlorine derivatives. Citizen Stream Monitoring Program Volunteers Minnesota Department of Natural Resources Minnesota Department of Health Minnesota Department of Agriculture Red River Watershed Management Board Project dollars provided by the Clean Water Fund (from the Clean Water, Land and Legacy Amendment). Minnesota Pollution Control Agency 520 Lafayette Road North | Saint Paul, MN 55155-4194 | www.pca.state.mn.us | 651-296-6300 Toll free 800-657-3864 | TTY 651-282-5332 This report is available in alternative formats upon request, and online at www.pca.state.mn.us Document number: wq-ws3-09020304b List of acronyms AUID Assessment Unit Identification MDNR Minnesota Department of Natural Determination Resources CCSI Channel Condition and Stability Index MINLEAP Minnesota Lake Eutrophication CD County Ditch Analysis Procedure CI Confidence Interval MPCA Minnesota Pollution Control Agency CLMP Citizen Lake Monitoring Program MSHA Minnesota Stream Habitat Assessment CR County Road MTS Meets the Standard CSAH County State Aid Highway N Nitrogen CSMP Citizen Stream Monitoring Program Nitrate-N Nitrate Plus Nitrite Nitrogen CWA Clean Water Act NA Not Assessed CWLA Clean Water Legacy Act NHD National Hydrologic Dataset DOP Dissolved Orthophosphate NH3 Ammonia E Eutrophic NS Not Supporting EQuIS Environmental Quality Information NT No Trend System NWI National Wetland Inventory EX Exceeds Criteria (Bacteria) OP Orthophosphate EXP Exceeds Criteria, Potential Impairment P Phosphorous EXS Exceeds Criteria, Potential Severe PCB Poly Chlorinated Biphenyls Impairment PWI Protected Waters Inventory FS Full Support RNR River Nutrient Region FWMC Flow Weighted Mean Concentration SWAG Surface Water Assessment Grant H Hypereutrophic SWCD Soil and Water Conservation District HGM Hydrogeomorphic TALU Tiered Aquatic Life Uses HUC Hydrologic Unit Code TKN Total Kjeldahl Nitrogen IBI Index of Biotic Integrity TMDL Total Maximum Daily Load IF Insufficient Information TP Total Phosphorous K Potassium TSS Total Suspended Solids LRVW Limited Resource Value Water USGS United States Geological Survey M Mesotrophic WPLMN Water Pollutant Load Monitoring MCES Metropolitan Council Environmental Services Network MDA Minnesota Department of Agriculture MDH Minnesota Department of Health Contents List of acronyms .................................................................................................................................1 Executive summary ............................................................................................................................1 Introduction ......................................................................................................................................2 I. The watershed monitoring approach ......................................................................................... 3 Load monitoring network ....................................................................................................................................................... 3 Intensive watershed monitoring ............................................................................................................................................ 3 Citizen and local monitoring ................................................................................................................................................... 5 II. Assessment methodology ........................................................................................................... 6 Water quality standards ......................................................................................................................................................... 6 Assessment units .................................................................................................................................................................... 7 Determining use attainment .................................................................................................................................................. 8 Data management .................................................................................................................................................................. 9 Period of record ................................................................................................................................................................... 10 III. Watershed overview .................................................................................................................. 10 Land use summary ............................................................................................................................................................... 11 Surface water hydrology ...................................................................................................................................................... 14 Climate and precipitation ..................................................................................................................................................... 15 Hydrogeology ....................................................................................................................................................................... 17 Wetlands .............................................................................................................................................................................. 18 IV. Watershed-wide data collection methodology ............................................................................ 19 Load monitoring ................................................................................................................................................................... 19 Stream water sampling ........................................................................................................................................................ 20 Stream biological sampling .................................................................................................................................................. 20 Fish contaminants ................................................................................................................................................................ 21 Lake water sampling............................................................................................................................................................. 22 Groundwater monitoring ..................................................................................................................................................... 22 Wetland monitoring ............................................................................................................................................................. 22 V. Individual subwatershed results ................................................................................................. 23 Moose River Subwatershed HUC 09020304010 .......................................... 26 Thief River Subwatershed HUC 09020304020 .......................................... 33 Mud and Lost River Subwatershed HUC 09020304030 ........................................... 41 Branch 200 of Judicial Ditch 11 Subwatershed HUC 09020304040 ............................................ 46 County Ditch 120 Subwatershed HUC 09020304050 ............................................ 51 Goodrich Subwatershed HUC 09020304060 ............................................ 56 VI. Watershed-wide results and discussion ...................................................................................... 61 Pollutant load monitoring .................................................................................................................................................... 61 Stream water quality ............................................................................................................................................................ 65 Lake water quality ................................................................................................................................................................ 66 Biological monitoring ........................................................................................................................................................... 67 Fish contaminant results ...................................................................................................................................................... 68 Groundwater monitoring ..................................................................................................................................................... 70 Stressor identification .......................................................................................................................................................... 73 VII. Summaries and recommendations ............................................................................................