Tenmile Lakes Watershed Water Quality Management Plan (WQMP)
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Tenmile Lakes Watershed Water Quality Management Plan (WQMP) Prepared by: Oregon Department of Environmental Quality February 2007 Submissions by: Oregon Department of Forestry Oregon Department of Agriculture Oregon Department of Transportation Tenmile Lakes Basin Partnership TENMILE LAKES WATERSHED WATER QUALITY MANAGEMENT PLAN FEBRUARY 2007 TABLE OF CONTENTS TABLE OF CONTENTS ........................................................................................I FIGURES AND TABLES.................................................................................... IV ACRONYMS........................................................................................................ V CHAPTER 1 – BACKGROUND AND INTRODUCTION ......................................1 1.1 TMDL WATER QUALITY MANAGEMENT PLAN GUIDANCE ..................................2 1.2 WQMP REQUIRED ELEMENTS - OAR 340-042-0040 (4)(I)(A-O) .....................3 CHAPTER 2 - CONDITION ASSESSMENT AND PROBLEM DESCRIPTION OAR 340-42-0040(4)(I)(A)....................................................................................5 2.1 WATER QUALITY IMPAIRMENT .........................................................................5 2.1.1 Aquatic Weeds (Macrophytes) ...................................................................................................... 5 2.1.2 Phytoplankton (floating algae) ...................................................................................................... 6 2.1.3 Chlorophyll a................................................................................................................................. 6 2.1.4 pH .................................................................................................................................................. 6 2.3 NUTRIENT LOADING CAPACITY ........................................................................6 2.4 NUTRIENT LOADING CAPACITY INDICATORS......................................................7 2.5 OTHER LIMITING FACTORS ..............................................................................8 CHAPTER 3 - GOALS AND OBJECTIVES OAR 340-42-0040(4)(I)(B) ..............9 3.1 REQUIRED IMPLEMENTATION PLAN COMPONENTS OAR 340-42- 0080(3)(A)(A-E) .................................................................................................9 CHAPTER 4 - IDENTIFICATION OF RESPONSIBLE PARTICIPANTS AND IMPLEMENTATION PLAN STATUS OAR 340-42-0040(4)(I)(G,H)...................11 4.1 OREGON DEPARTMENT OF ENVIRONMENTAL QUALITY (ODEQ) .......................11 4.1.1 Extent of jurisdiction ................................................................................................................... 11 4.1.2 Implementation Plan Status – In place ........................................................................................ 12 4.2 DMA: OREGON DEPARTMENT OF AGRICULTURE (ODA) .................................12 4.2.1 Extent of jurisdiction ................................................................................................................... 13 4.2.2 Implementation Plan Status – Plan and Rules are in place .......................................................... 14 4.2.3 DEQ Expectations ....................................................................................................................... 14 4.3 DMA: OREGON DEPARTMENT OF FORESTRY (ODF)......................................15 4.3.1 Extent of Jurisdiction................................................................................................................... 15 4.3.2 Implementation Plan Status –Rules are In Place ......................................................................... 15 4.3.3 DEQ Expectations ....................................................................................................................... 15 4.4 DMAS: LOCAL JURISDICTIONS .....................................................................16 4.4.1 Multiple Local Jurisdictions ........................................................................................................ 16 4.4.4 Extent of Jurisdiction................................................................................................................... 16 4.4.5 Implementation Plan Status – Pending Development.................................................................. 16 4.4.3 DEQ Expectations ....................................................................................................................... 17 4.5 DMA: OREGON DEPARTMENT OF TRANSPORTATION (ODOT).........................17 4.5.1 Extent of Jurisdiction................................................................................................................... 17 4.5.2 Implementation Plan Status – In Place ........................................................................................ 17 Oregon Department of Environmental Quality i TENMILE LAKES WATERSHED WATER QUALITY MANAGEMENT PLAN FEBRUARY 2007 4.6 DMA: OREGON DEPARTMENT OF FISH AND WILDLIFE (ODFW)......................18 4.6.1 Extent of Jurisdiction................................................................................................................... 18 4.6.2 Implementation Plan Status – In Place ........................................................................................ 18 4.6.3 DEQ Expectations ....................................................................................................................... 18 4.7 DMA: OREGON DIVISION OF STATE LANDS (DSL).........................................18 4.7.1 Extent of Jurisdiction................................................................................................................... 19 4.7.2 Implementation Plan Status –Rules Are In Place ........................................................................ 19 4.7.3 DEQ Expectations ....................................................................................................................... 19 4.8 DMA: OREGON STATE MARINE BOARD ........................................................21 4.8.1 Extent of Jurisdiction................................................................................................................... 21 4.8.2 Implementation Plan Status –Rules Are In Place ........................................................................ 21 4.8.2 DEQ Expectations ....................................................................................................................... 21 4.9 COASTAL NONPOINT POLLUTION CONTROL PROGRAM (CNPCP)....................22 4.10 VOLUNTARY PARTICIPANTS WORKING TO IMPROVE WATER QUALITY IN THE TENMILE LAKES WATERSHED .............................................................................23 4.10.1 Implementation Plan Status – Voluntary WQIP is In Place ...................................................... 23 CHAPTER 5 - PROPOSED MANAGEMENT STRATEGIES OAR 340-42- 0040(4)(I)(C) .......................................................................................................25 5.1. MANAGEMENT STRATEGIES FOCUS – REDUCING PHOSPHORUS LOADING .......25 5.1.1 Riparian and Wetland Protection and Enhancement.................................................................... 25 5.1.2 Sediment Abatement Measures ................................................................................................... 25 5.1.3 Hydromodified Channel Management Measures ........................................................................ 26 5.2 COOS AND COQUILLE AREA AWQMP MANAGEMENT MEASURES....................27 5.2.1 Sediment Management ................................................................................................................ 27 5.2.2 Nutrient Management.................................................................................................................. 27 5.2.3 Riparian Management.................................................................................................................. 28 5.2.4 Pasture Management.................................................................................................................... 28 5.2.5 Ditch and Tidegate Management................................................................................................. 29 5.3 OREGON FOREST PRACTICES ACT (FPA) ......................................................30 5.4 COASTAL NONPOINT POLLUTION CONTROL PROGRAM STRATEGIES ................30 5.4.1 Non-Resource Land Management Measures............................................................................... 30 5.4.2 Management Measures for Marinas and Recreational Boating ................................................... 34 5.4.3 Riparian and Wetland Measures - Multiple Land Uses ............................................................... 36 5.4.4 Forestry Management Measures.................................................................................................. 37 5.4.5 Agricultural Management Measures............................................................................................ 41 5.4.6 Multiple Land Uses ..................................................................................................................... 43 5.5 INVASIVE WEED MANAGEMENT MEASURES ....................................................44 CHAPTER 6 - TIMELINE FOR IMPLEMENTATION OAR 340-42- 0040(4)(I)(D)(F)(I) ...............................................................................................47 CHAPTER 7 - REASONABLE ASSURANCE OAR 340-42-040(4)(I)(J) ...........49