Middle Marais Des Cynges Watershed Plan Watershed Restoration and Protection Strategy
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Middle Marais des Cynges Watershed Plan Watershed Restoration and Protection Strategy Water Quality Impairments Directly Addressed: • Pottawatomie Creek near Osawatomie – Dissolved Oxygen (High Priority) • Marais des Cygnes River near Ottawa – Bacteria (High Priority) Other Impairments Positively Affected by Watershed Plan Implementation: TMDLs • Ottawa (Tauy) Creek Near Ottawa – Dissolved Oxygen (High Priority) • Crystal Lake In Garnett – Eutrophication (Medium Priority) • Spring Creek Park Lake Near Baldwin City – Eutrophication/Aquatic Plants (Low Priority) 303(d) List • MdC River below Ottawa – Biological (Medium Priority) and Acute Copper (Medium Priority) • MdC River above Ottawa (Richter) – Chronic Copper (Low Priority) • Ottawa Creek – Acute Copper (Medium Priority) • Appanoose Creek – Dissolved Oxygen (Low Priority) • Cedar Creek Lake – Turbidity (Medium Priority) and Eutrophication (Low Priority) • Richmond City Lake – Dissolved Oxygen (Medium Priority) • Westphalia Lake – Turbidity (Low Priority) Determination of Priority Areas • Two riparian assessments were conducted by the Watershed Forester and Watershed Livestock Specialist to identify high priority sites within the watershed. A scoring system was established with eight different categories, channel conditions, bank stability, livestock access, riparian vegetation, canopy cover, riparian zone width, bank height, and stream habitat, to determine the quality of the site using the Stream Visual Assessment Protocol (NWCC Technical Note 99-1, 1998). • Interpretation of KDHE monitoring data was completed identify targeted areas. • Presence of High Priority TMDLs within the HUC 12 boundaries. • Analysis of data and input from the SLT, the coordinator, and other interested parties identified two priority areas; one in the north and on in the south. BMPs to be implemented: Middle Marais des Cygnes Priority Areas for BMP Implementation • Vegetative Filter Strip • Relocate Feeding Pens • Relocate Pasture Feeding Site • Off Stream Watering System • Rotational Grazing • Grazing Mgmt Plans • Fence off Streams and Ponds • Terraces and Waterways • No-Till • Nutrient Management Plans • Vegetative and Riparian Buffers • Grade Stabilization Structures The load reduction goals for the watershed plan will be met within 12 years if BMPs are implemented as scheduled. The total BMP implementation schedule to address identified conservation needs within the watershed covers 20 years. MdC River Load Reduction Goal 70,949 lbs/yr 55,070 lbs/yr 14,357 lbs/yr 1,522 lbs/yr P phosphorous is desired load phosphorous Ottawa MS4 load entering for the Marais reduction Waste Load the Marais des des Cygnes needed to meet Allocation Cygnes River River the TMDL Pottawatomie Creek Phosphorous Load Reduction Goal 7,980 lbs/yr 5,460 lbs/yr is 2,520 lbs/yr phosphorous desired load phosphorous load entering for reduction the Pottawatomie needed to meet Pottawatomie Creek the TMDL Pottawatomie Creek Sediment Load Reduction Goal 1,040 tons/yr 910 tons/yr is 130 tons/yr sediment load desired sediment entering the sediment load reduction Pottawatomie for needed to meet Creek Pottawatomie the TMDL Middle Marais des Cygnes Constructed Wetland near Hillsdale Reservoir Photo provided by Bi-State Targeted Watershed Grant Nine Element Watershed Restoration and Protection Strategy Lake Region Resource Conservation and Development Council December 31, 2012 The Kansas Department of Health and Environment has provided financial assistance to this project through EPA Section 319 Nonpoint Source Pollution Control Grant No. 2008-0079 Middle Marais des Cygnes Watershed Restoration and Protection Strategy TABLE OF CONTENTS INTRODUCTION....................................................................................................................................... 1 Watershed Restoration and Protection Strategy ........................................................................... 1 The Purpose of the Plan .................................................................................................................. 2 Background of the Middle MdC Watershed ................................................................................... 4 North Section ............................................................................................................................... 4 South Section ............................................................................................................................... 5 Land Cover and Land Use ............................................................................................................ 7 Designated Uses ........................................................................................................................ 10 Watershed Threats and Restoration Efforts ................................................................................. 13 Watershed Plans in Place .......................................................................................................... 13 Water Quality Impairments ...................................................................................................... 14 Riparian Assessment ................................................................................................................. 16 Monitoring ................................................................................................................................. 22 NORTH SECTION 1. MDC RIVER ...................................................................................................... 24 Phosphorus load reduction goal to correlate with the Fecal coliform bacteria TMDL ................ 29 Additional sources of fecal coliform bacteria ............................................................................... 31 Additional nonpoint source pollution ........................................................................................... 32 BEST MANAGEMENT PRACTICES NORTH SECTION ................................................................. 32 BMP Adoption Rates ..................................................................................................................... 33 ESTIMATED LOAD REDUCTIONS AND COSTS ............................................................................ 33 MdC River BMPs, Costs and Estimated Phosphorus Reduction ................................................... 33 Livestock BMP Adoption Rates and Annual Costs ........................................................................ 33 MdC River Subwatershed Livestock and Cropland Breakdown .................................................... 36 SOUTH SECTION 2. POTTAWATOMIE CREEK ........................................................................... 37 BEST MANAGEMENT PRACTICES SOUTH SECTION: ................................................................ 38 BMP Adoption Rates ..................................................................................................................... 39 ESTIMATED LOAD REDUCTIONS AND COSTS ............................................................................ 41 Needs Inventory ............................................................................................................................ 45 FUTURE ISSUES AND PROTECTION ............................................................................................... 48 Oil Drilling in Anderson County ..................................................................................................... 48 TABLE OF CONTENTS Page i Middle Marais des Cygnes Watershed Restoration and Protection Strategy Targeted Participants for the North Section – MdC River ............................................................ 50 Targeted Participants for the South Section – Pottawatomie Creek ........................................... 50 WATER QUALITY MILESTONES TO DETERMINE IMPROVEMENTS .................................... 57 Water Quality Milestones for Bacteria – MdC River near Ottawa ............................................ 57 Water Quality Milestones for Pottawatomie Creek near Osawatomie .................................... 60 Monitoring Water Quality Progress .............................................................................................. 61 BEST MANAGEMENT PRACTICES DEFINITIONS ........................................................................ 64 Livestock Best Management Practices ......................................................................................... 64 Vegetative buffer strip .............................................................................................................. 64 Manure management ............................................................................................................... 64 Install proper manure storage facility ....................................................................................... 64 Develop nutrient management plans ........................................................................................ 64 Relocate Feedlot or Feeding Pens (confinement feeding) ......................................................... 64 Relocate feeding site and/or change feeding method within pasture (non-confined feeding) ...................................................................................................... 64 Settling Basin ............................................................................................................................. 64 Lagoons ....................................................................................................................................