Molalla-Pudding, French Prairie and North Santiam Agricultural Water Quality Management Area Plan
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Molalla-Pudding, French Prairie and North Santiam Agricultural Water Quality Management Area Plan November 2018 Developed by the Oregon Department of Agriculture Molalla, Pudding, French Prairie and North Santiam Local Advisory Committee With support from the Marion, Linn, and Clackamas Soil and Water Conservation Districts ODA Marion SWCD Clackamas SWCD Linn SWCD Water Quality Program 338 Hawthorne Ave NE 221 Molalla Ave. 33935 Hwy. 99E 635 Capitol Street NE Salem, OR 97301 Suite 102 Tangent, OR 97389 Salem, Oregon 97301 Phone: (503) 391-9927 Oregon City, OR 97045 Phone: (541) 926-2483 Phone: (503) 986-4700 marionswcd.oacd.net Phone: (503) 210-6000 linnswcd.oacd.org [email protected] http://oda.direct/AgWQPlans Table of Contents Acronyms and Terms Used in this Document ............................................................................ i Foreword .......................................................................................................................................... iii Required Elements of Area Plans ............................................................................................... iii Plan Content ..................................................................................................................................... iii Chapter 1: Agricultural Water Quality Management Program Purpose and Background 1 1.1 Purpose of Agricultural Water Quality Management Program and Applicability of Area Plans..................................................................................................................................................... 1 1.2 History of the Ag Water Quality Program .............................................................................. 1 1.3 Roles and Responsibilities ......................................................................................................... 2 1.3.1 Oregon Department of Agriculture .............................................................................................................. 2 1.3.2 Local Management Agency ............................................................................................................................... 5 1.3.3 Local Advisory Committee ................................................................................................................................ 5 1.3.4 Agricultural Landowners .................................................................................................................................. 5 1.3.5 PuBlic Participation .............................................................................................................................................. 6 1.4 Agricultural Water Quality ........................................................................................................ 6 1.4.1 Point and Nonpoint Sources of Water Pollution ................................................................................... 6 1.4.2 Beneficial Uses and Parameters of Concern ............................................................................................ 6 1.4.3 Impaired WaterBodies and Total Maximum Daily Loads ................................................................. 7 1.4.4 Oregon Water Pollution Control Law – ORS 468B.025 and ORS 468B.050 ............................ 7 1.4.5 Streamside Vegetation and Agricultural Water Quality .................................................................... 8 1.5 Other Water Quality Programs ................................................................................................. 9 1.5.1 Confined Animal Feeding Operation Program .................................................................................... 10 1.5.2 Groundwater Management Areas .............................................................................................................. 10 1.5.3 The Oregon Plan for Salmon and Watersheds..................................................................................... 10 1.5.4 Pesticide Management and Stewardship ............................................................................................... 10 1.5.5 Drinking Water Source Protection ............................................................................................................ 11 1.6 Partner Agencies and Organizations ..................................................................................... 11 1.6.1 Oregon Department of Environmental Quality ................................................................................... 11 1.6.2 Other Partners ..................................................................................................................................................... 12 1.7 Measuring Progress ................................................................................................................... 12 1.7.1 MeasuraBle OBjectives ..................................................................................................................................... 12 1.7.2 Land Conditions and Water Quality .......................................................................................................... 13 1.7.3 Focused Implementation in Small Geographic Areas ...................................................................... 13 1.8 Monitoring, Evaluation, and Adaptive Management ........................................................ 14 1.8.1 Agricultural Water Quality Monitoring ................................................................................................... 14 1.8.2 Biennial Reviews and Adaptive Management ..................................................................................... 15 Chapter 2: Local Background ................................................................................................. 17 2.1 Local Roles .................................................................................................................................... 18 2.1.1 Local Advisory Committee ............................................................................................................................. 18 2.1.2 Local Management Agency ............................................................................................................................ 19 2.2 Area Plan and Area Rules: Development and History ...................................................... 20 2.3 Geographical and Physical Setting ......................................................................................... 20 2.4 Agricultural Water Quality ...................................................................................................... 36 2.4.1 Water Quality Issues ......................................................................................................................................... 36 Molalla-Pudding Agricultural Water Quality Management Area Plan November 1, 2018 2.4.1.1 Beneficial Uses ................................................................................................................................................ 36 2.4.1.2 WQ Parameters and 303(d) list............................................................................................................. 37 2.4.2 Basin TMDLs and Agricultural Load Allocations ............................................................................... 38 2.4.3 Sources of Impairment .................................................................................................................................... 39 2.5 Voluntary and Regulatory Measures ..................................................................................... 39 2.5.1 Nutrients and Manure Management ........................................................................................................ 40 2.5.2 Waste: Livestock and Other ......................................................................................................................... 40 2.5.3 Riparian/Streamside Management Area (RMA) ................................................................................ 41 2.5.4 Soil Erosion Prevention and Control ........................................................................................................ 42 2.5.5 Upland Management, Irrigation Management, Livestock Management ................................ 43 2.5.6 Chemigated Irrigation Water ....................................................................................................................... 43 2.5.7 Surface Drainage and Irrigation Ditches ................................................................................................ 44 2.5.8 Irrigation ................................................................................................................................................................. 45 2.5.9 Pesticides ................................................................................................................................................................ 45 2.5.10 Road and Staging Areas ............................................................................................................................. 46 Chapter 3: Implementation Strategies ................................................................................ 49 3.1 Measurable Objectives .............................................................................................................. 49 3.1.1 Management Area 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