Water Resources Plan Shaping Our Future a Comprehensive Plan for Montgomery County
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Water Resources Plan Shaping Our Future A Comprehensive Plan for Montgomery County M O N T G O M E R Y C O U N T Y P E N N S Y L V A N I A Montgomery County Commissioners James R. Matthews, Chairman Thomas J. Ellis, Esq. Ruth S. Damsker Montgomery County Planning Commission Board P. Gregory Shelly, Chair Scott Exley, Vice Chair Dulcie F. Flaharty Henry P. Jacquelin Pasquale N. Mascaro Megan M. McDonough, Esq. Roy Rodriguez, Jr. Charles J. Tornetta V. Scott Zelov Kenneth B. Hughes, Director Water Resources Plan Shaping Our Future A Comprehensive Plan for Montgomery County 2005 M O N T G O M E R Y C O U N T Y P L A N N I N G C O M M I S S I O N Water Resources Plan This plan was financed, in part, by a grant from the Commonwealth of Pennsylvania, Department of Community and Economic Development. ii Shaping Our Future ofTable Contents Introduction . ix Chapter 1 Water Resources Goals and Actions Goal 31. Provide an Adequate Supply of Water for Both Consumption and Natural Habitats . 1 Goal 32. Protect Water Quality . 1 Goal 33. Effectively Manage Flooding . 2 Goal 34. Create Attractive Stormwater Facilities that Control Flooding, Recharge Groundwater, and Improve Water Quality . 3 Chapter 2 Water Supply Existing Conditions . 5 Public Water Systems, Small Community Systems, and Private Wells . 5 Understanding Water Supply Sources: Public Water . 7 Understanding Water Supply Sources: Private Wells . 8 Ground Water and Generalized Geology of Montgomery County . 8 Triassic Lowlands . 9 Piedmont Uplands . 10 Regulating Major Water Withdrawals: The DRBC and DEP . 11 Regulating Individual Water Supply Systems: The Montgomery County Health Department (MCHD) . 12 Groundwater Supply Problems: Emergency Well Permits and Contamination . 13 Emergency Well Permits . 13 Contaminated Wells . 15 Water Supply Plan . 15 Conservation Measures . 16 Public Water Supply . 19 Individual Well Water Supply . 19 Recommendations . 21 Conclusion . 25 Chapter 3 Water Quality Existing Conditions . 27 Surface Water Quality . 28 Streams . 28 Rivers . 29 Lakes and Ponds . 30 Groundwater Quality . 31 iii Water Resources Plan Neighboring Counties . 32 Causes of Water Contamination . 33 Water Quality Plan . 37 Point Source Pollution . 37 Nonpoint Source Pollution . 39 Using Stormwater Best Management Practices . 39 Limiting The Effects of Land Disturbance . 39 Cutting Down on Runoff . 40 Keeping Golf Courses and Playing Fields Green . 41 Protecting Riparian Corridors . 41 Keeping Agricultural Runoff Under Control . 43 Natural Features Protection Ordinances . 44 Groundwater . 45 Wellhead Protection . 46 Land Acquisition . 47 Conclusion . 47 Chapter 4 Flooding Existing Conditions . 49 Flood Protection Plan . 53 Emergency Services . 53 Preventative Activities . 54 Building Code Development and Enforcement . 54 Drainage System Maintenance . 55 Stormwater Management . 55 Redeveloping Areas . 55 Constriction Points . 55 Property Protection . 56 Acquisition and Relocation . 56 Retrofitting . 56 Floodplain Management . 56 Flood Insurance . 57 Flood Control Structures . 58 Natural Resources Protection . 59 Public Information Programs . 60 Conclusion . 60 Chapter 5 Stormwater Management Existing Conditions . 61 The Stormwater Management System . 61 Managing Runoff . 62 Cumulative Impacts . 65 iv Shaping Our Future Stormwater Plan . 67 Best Management Practices . 68 Stormwater Basins . 71 NPDES Phase II . 72 Conclusion . 73 Chapter 6 Pulling It All Together — The Water Cycle Water Resources as a Whole . 75 Relationship of Water Resources to the Whole Comprehensive Plan . 77 Implementation . 78 Appendix A Montgomery County Health Department Water Quality Standards Water Standards for Wells . 81 Isolation Distances for Wells . 81 Appendix B Superfund Sites as of 2004, Montgomery County PA . 83 Appendix C Common Household Hazardous Waste . 85 v Water Resources Plan vi Shaping Our Future ofList Figures Chapter 1 Figure 1 2000 Montgomery County Private Well Demand: Proportion of People Using Wells by Municipality . 6 Figure 2 Estimated Population Using Public Water and Private Wells by Municipality, 2000 . 7 Figure 3 Residents Using Private Wells: Top Twenty Municipalities . 7 Figure 4 Montgomery County Estimates of New Population Using Private Wells . 8 Figure 5 Generalized Geology in Montgomery County . 9 Figure 6 Montgomery County Sub-basins . ..