MUSQUAPSINK BROOK WATERSHED RESTORATION AND PROTECTION PLAN Developed by the Rutgers Cooperative Extension Water Resources Program Funded by the New Jersey Department of Environmental Protection RP 07-002 June 6, 2012 1 Table of Contents 1. ACKNOWLEDGEMENTS................................................................................................................................ 9 2. EXECUTIVE SUMMARY................................................................................................................................. 9 3. INTRODUCTION............................................................................................................................................. 10 3.1 BACKGROUND ..........................................................................................................................................10 3.2 PARTNERSHIPS AND ACCOMPLISHMENTS...............................................................................................11 3.3 PURPOSE OF THIS PLAN ...........................................................................................................................11 4. MUSQUAPSINK BROOK WATERSHED .................................................................................................... 13 4.1 PHYSICAL CHARACTERISTICS.................................................................................................................13 4.1.1 Geography and Topography...............................................................................................................13 4.1.2 Demographics.....................................................................................................................................16 4.1.3 Climate ................................................................................................................................................16 4.1.4 Geology................................................................................................................................................17 4.1.5 Soils .....................................................................................................................................................19 4.1.6 Streams and Groundwater..................................................................................................................21 4.2 CRITICAL SOURCE AREAS.......................................................................................................................22 4.2.1 Wetlands ................................................................................................................................................22 4.2.2 Hydric Soils ...........................................................................................................................................25 4.2.3 Riparian Areas ......................................................................................................................................25 4.3 LAND USE.................................................................................................................................................27 5. CAUSES AND SOURCES OF POLLUTION ................................................................................................ 29 5.1 HYDROLOGICAL ALTERATION................................................................................................................29 5.2 SURFACE WATER QUALITY.....................................................................................................................30 5.2.1 Designated Uses and Impairments.....................................................................................................30 5.2.2 Monitoring Stations ............................................................................................................................33 5.2.3 Monitoring Events ..............................................................................................................................33 5.2.4 Summary of Water Quality Data........................................................................................................34 5.2.5 Biological Monitoring Data................................................................................................................35 5.2.6 Stressor Identification.........................................................................................................................39 5.2.7 Microbial Source Tracking.................................................................................................................41 5.3 NONPOINT SOURCES ................................................................................................................................48 5.4 POINT SOURCES .......................................................................................................................................49 5.5 EROSION AND SEDIMENTATION ..............................................................................................................51 5.6 STREAM VISUAL ASSESSMENT PROTOCOL (SVAP) DATA.....................................................................56 5.6.1 Using the SVAP Data..........................................................................................................................59 2 6. ESTIMATED LOADING TARGETS AND PRIORITIES........................................................................... 59 6.1. LOADING TARGETS..................................................................................................................................59 6.2. PRIORITY RANKING.................................................................................................................................59 7. NONPOINT SOURCE POLLUTION MANAGEMENT MEASURES....................................................... 64 7.1 LOAD REDUCTION SCENARIOS................................................................................................................64 7.1.1 Total Phosphorus................................................................................................................................64 7.1.2 Fecal Coliform/E. coli ........................................................................................................................67 7.2 URBAN BEST MANAGEMENT PRACTICES ...............................................................................................68 7.2.1 Rain Gardens ......................................................................................................................................68 7.2.2 Permeable Pavement...........................................................................................................................70 7.2.3 Green Streets.......................................................................................................................................70 7.2.4 Rain Barrels ........................................................................................................................................71 7.2.5 Bank Stabilization and Riparian Buffer Restoration ........................................................................72 7.3 SITE SPECIFIC RESTORATION PROJECTS ...............................................................................................74 7.3.1 Subwatershed MB1 .............................................................................................................................75 7.3.2 Subwatershed MB2 .............................................................................................................................78 7.3.3 Subwatershed MB3 .............................................................................................................................83 7.3.4 Subwatershed MB4 .............................................................................................................................86 7.3.5 Subwatershed MB5 .............................................................................................................................96 7.3.6 Subwatershed MB6 ...........................................................................................................................101 7.4 BMP CONCEPT DESIGNS.......................................................................................................................106 7.5 POINT SOURCE RECOMMENDATIONS ...................................................................................................106 8. INFORMATION AND EDUCATION.......................................................................................................... 106 9. IMPLEMENTATION PLAN AND MEASURABLE MILESTONES....................................................... 107 10. ESTIMATED BUDGET, SOURCE OF FUNDING, AND TECHNICAL ASSISTANCE....................... 108 11. CONCLUSIONS ............................................................................................................................................. 108 REFERENCES ......................................................................................................................................................... 109 APPENDICES........................................................................................................................................................... 113 Appendices Appendix A: Musquapsink Brook Watershed Restoration and Protection Plan Data Report Appendix B: Optical Brightener Sampling Report Appendix C: Site Specific Restoration Projects Appendix D: Select Best Management Practice Concept Designs