Water Protection Activities in Washtenaw County

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Most of the watershed management plans recommend using best management practices (BMPs) to address threats to the watershed health. Table 4 shows 29 commonly recommended BMPs (Plans that recommend a particular strategy are marked “”). More detailed watershed plan summaries and a comprehensive list of BMP recommendations can be found in Appendix B. Table 4: BMP Examples BMP Recommended For County Wide Implementation Phosphorus reduction ordinance Native plant landscaping ordinance Private roads ordinance 40 Plan # BMP Description BMP Outcome 1 2 3 4 5 6 8 Regulate selection, use, storage and disposal of fertilizers Encourage use of plants adapted to this geographic area Allows for roads to be narrower than county standards Storm water management ordinance Regulations to guide property development Local wetlands ordinance Enhance site plan requirements Reduce directly connected impervious surface area High powered street and paved area sweeping Improve protection of stream and riparian habitats through alternative drain practices Initiate hydrologic study and hydraulic study Investigate opportunities for recreation areas Ordinance for wetlands not currently regulated by state or federal authorities Review floodplain, soil types, landmark trees, groundwater recharge areas, etc. Directing flows from roof drains and paved areas to stabilized vegetated areas A management measure that involves pavement cleaning on a regular basis Look for opportunities to correct old drainage practices like tiled agricultural land Comprehensive hydrology and hydraulic study in the watershed Increase opportunities for people to access water resources Reduction of nutrients entering watershed reducing algal blooms and fish kills Improved storm water infiltration , soil stabilization and habitat Reduction of impervious surface area minimizing runoff to watershed Protects watershed regarding water quality, quantity and biological integrity Protection of small and isolated wetlands Assures environmental responsible development Reduction in storm water peak discharges, runoff volume and erosion Reduction of sediment debris and pollutant export to receiving waters Restores hydrologic function Understanding precipitation, infiltration, surface runoff, flow rates and storage & better understanding of velocity, flow depth, flood elevation, channel erosion Increase in number of persons interested in protection of water resources
Table 4: BMP Examples (Continued) Plan # BMP Recommended For County Wide Implementation Create and maintain grassed waterways Install and maintain vegetated filter strips Install and maintain riparian buffers Install and maintain bioretention systems Install grassed swales Practice crop rotation w/ cover and mulch Restore wetlands Install rain gardens Install and maintain vegetated roofs Install grade stabilization culverts Install and maintain catch basin inserts Install and maintain sediment trapping devices Repair misaligned/obstructed culverts Stabilize road/bridge surfaces BMP Description BMP Outcome 1 2 3 4 5 6 8 Natural or constructed channels on farm lands established with suitable vegetation Strips of grass or other permanent vegetation designed to treat sheet flow Streamside ecosystems managed for the enhancement of water quality Landscaping features in developed areas adapted to provide onsite treatment Open channel management practices designed to treat and attenuate storm water runoff Employ agricultural techniques that limit impacts on water quality Rehabilitation of drained or degraded wetlands Vegetated depression typically near an impervious surface to intercept storm water runoff Structural addition of plants/soil over a traditional roof system Install structures to control the grade and head cutting in channels (mostly agricultural) Installation of additional sump chambers to enhance collection of solids Barriers, basins and other devise designed to remove sediment from runoff Coordinate townships and County efforts to address drainage problems Alter grading practices and examine surface options on unpaved roads and bridges 41 Treatment of sheet flow, improved infiltration, reduced erosion Slower runoff velocities, better infiltration, sediment and nutrient filtration Slower runoff velocities, infiltration, sediment and nutrient filtration Sediment and nutrient filtration, slower runoff velocities Slower runoff, sediment and nutrient filtration, improved infiltration Reduced sedimentation, and nutrient loadings Treatment, settling and storage of storm water. Aesthetic value/habitat Slower runoff velocities, infiltration, nutrient filtration Improved energy efficiency, reduction of storm water runoff Reduces erosion and sedimentation Reduction of sediment in storm water Reduction of sediment in storm water Addresses changes in hydrology and maintenance Reduce sediment pollution
Page 1 and 2: Water Protection Activities in Wash
Page 3 and 4: Acknowledgements Water Protection A
Page 5 and 6: Executive Summary Introduction The
Page 7 and 8: Local Water Quality Information The
Page 9 and 10: TABLE OF CONTENTS Section Page # Se
Page 11 and 12: MAPS, FIGURES, AND TABLES Map # Tit
Page 13 and 14: 1.0 Introduction Background In Sept
Page 15 and 16: 2.0 Groundwater Groundwater is a vi
Page 17 and 18: 2.1 Conditions and Trends The prima
Page 19 and 20: 2.2 Groundwater Protection Activiti
Page 21 and 22: Activity #5 Wellhead Protection Cle
Page 23 and 24: Activity #8 Groundwater Withdrawal
Page 25 and 26: 2.3 Groundwater Challenges and Resp
Page 27 and 28: Map 5: Groundwater Arsenic Distribu
Page 29 and 30: Map 6: Groundwater Nitrate Distribu
Page 31 and 32: Challenge # 4: Part 201 Sites Part
Page 33 and 34: Challenge # 5: Landfills The rules
Page 35 and 36: Challenge # 6: Leaking Underground
Page 37 and 38: Gelman Sciences Inc. 1,4-dioxane Re
Page 39 and 40: 2.4 Groundwater Organizations Leade
Page 41 and 42: 3.0 Surface Water Surface water is
Page 43 and 44: Table 2: Michigan’s Designated Us
Page 45 and 46: Table 3: Total Maximum Daily Load S
Page 47 and 48: ● CWA Section 319 Grants - Sectio
Page 49 and 50: Activity #12 Michigan Drain Code Mo
Page 51: Activity #13 Inland Lake Level Act
Page 55 and 56: Public Beaches Tested in Washtenaw
Page 57 and 58: 3.3 Challenges and Responses Surfac
Page 59 and 60: The Rules of the Washtenaw County D
Page 61 and 62: Rain gardens have been installed on
Page 63 and 64: The Community Partners for Clean St
Page 65 and 66: Most, if not all, of the local unit
Page 67 and 68: Watershed Management Plans outline
Page 69 and 70: Challenge # 15 Point Source Dischar
Page 71 and 72: Challenge # 16 Community Wastewater
Page 73 and 74: ● Home Toxics Reduction Program
Page 75 and 76: 3.5 Local Tools There are many ordi
Page 77 and 78: APPENDIX A: Local Unit of Governmen
Page 79 and 80: NPDES Poi int Source Disccharge Per
Page 81 and 82: Page Intentionally Left Blank 69
Page 83 and 84: CCR Table continued 71
Page 86: A2: Augusta Township Challenging gr
Page 90: A4: Dexter Township As determined f
Page 94: A6: Lima Township Obtaining adequat
Page 98: A8: Lyndon Township The geology of
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A10: Northfield Township Aquifers y
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A12: Salem Township Dry holes have
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A14: Scio Township The glacial geol
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APPENDIX B: Watershed Plans and Bes
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B2 - Plan 2: Huron Chain of Lakes W
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B3 Map: 133 B4 Map:
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B5 - Plan 5: Middle One Rouge River
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B6 - Plan 6: Lower One Rouge River
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B8 - Plan 8: Stony Creek Watershed
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B9: Comprehensive Best Management P
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Watershed Plan BMP Title BMP Descri
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APPENDIX C: Acronyms and Abbreviati
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printed on recycled paper July 2008
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Water Protection Activities in Washtenaw County

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