Ogunquit River Watershed Based Plan
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CAPE NEDDICK RIVER WATERSHED BASED PLAN February 2014 Cape Neddick River Watershed Based Management Plan February 2014 Table of Contents 1. Executive Summary................................................................................................................. 1 2. Description of the Watershed .................................................................................................. 2 2.1 Location and Physical Characteristics.............................................................................. 2 2.2 Population and Demographics ......................................................................................... 2 2.3 Land Use and Land Cover ................................................................................................ 3 2.4 Potential for Future Development .................................................................................... 5 2.5 Water Resources ............................................................................................................... 6 2.5.1 Community Resources .............................................................................................. 6 2.5.2 Natural Resources ..................................................................................................... 7 2.6 Climate Change ................................................................................................................ 8 3. Baseline and Future Conditions Assessment ........................................................................... 8 3.1 Water Quality Classification ............................................................................................ 8 3.2 Summary of Available Data ........................................................................................... 11 3.2.1 Water Quality Monitoring Past and Present ........................................................... 11 3.2.2 Maine Department of Marine Resources Data ........................................................ 12 3.2.3 Maine Healthy Beaches Data .................................................................................. 13 3.2.4 York Community Development Department .......................................................... 14 3.2.5 Summary of York Community Development Department Water Quality Data..... 16 3.2.6 Summary of York Parks and Recreation Department Bacteria Sampling Data ..... 17 3.2.7 Previous Non-Bacteria Water Quality Data. ........................................................... 18 3.2.8 Other Relevant Reports ........................................................................................... 19 3.2.9 Summer 2012 Field Investigation ........................................................................... 19 3.2.10 Summary of 2012 Bacteria Data ............................................................................. 29 3.2.11 2013 Canine Detection ............................................................................................ 29 3.3 2013 Shoreland Survey – Element A ............................................................................. 30 3.3.1 Watershed Survey in 2013 ...................................................................................... 30 3.3.2 Conclusions from 2013 Watershed Survey............................................................. 31 4. Threats to Water Quality ....................................................................................................... 31 4.1 Nonpoint Sources of Pollution – Element A .................................................................. 31 4.1.1 Stormwater .............................................................................................................. 31 4.1.2 Septic Systems ........................................................................................................ 31 4.1.3 Agriculture .............................................................................................................. 32 4.1.4 Pet waste ................................................................................................................. 32 4.1.5 Wildlife ................................................................................................................... 32 4.2 Point Sources – Element A............................................................................................. 32 5. Linking Pollutant Sources to Water Quality ......................................................................... 33 5.1 Estimation of Pollutant Loads – Element A ................................................................... 33 5.1.1 Inputs to Bacteria Source Load Calculator ............................................................. 33 i FB Environmental Associates Cape Neddick River Watershed Based Management Plan February 2014 5.1.2 Bacteria Modeling Results ...................................................................................... 36 5.2 Identification of Critical Areas – Element C .................................................................. 38 6. Watershed Goals and Objectives ........................................................................................... 42 6.1 Management Objectives ................................................................................................. 42 6.2 Load Reduction Targets – Element B ............................................................................ 42 7. Management Strategies ......................................................................................................... 43 7.1 Existing Management Strategies .................................................................................... 43 7.2 Additional Strategies Needed to Achieve Goals – Element C ....................................... 44 7.3 Load Reduction Estimates – Element B ......................................................................... 46 8. Plan Implementation .............................................................................................................. 48 8.1 Plan Oversight ................................................................................................................ 48 8.2 Action Plan – Elements C, D, and F .............................................................................. 49 8.3 Indicators to Measure Progress – Element G ................................................................. 57 8.4 Educational Component – Element E ............................................................................ 58 8.5 Monitoring Plan – Element I .......................................................................................... 59 8.6 Evaluation Plan – Element H ......................................................................................... 59 9. References ............................................................................................................................. 61 10. Appendix A: 2013 Stormwater Survey Results..................................................................... 63 Table of Figures Figure 2-1: Cape Neddick River Watershed (Frick et al, 2013) ..................................................... 3 Figure 2-2: Land Cover in the Cape Neddick River Watershed ..................................................... 5 Figure 3-1: Bacteria Sampling Locations in the CNR Watershed from 2007 – 2011 ................. 14 Figure 3-2: Cape Neddick River Main Stem Sample Locations Percent Tests Exceeding Maine Water Quality Standard from 2007 to 2011(Frick et al., 2013) .................................................... 15 Figure 3-3: CNR Tributary Sample Locations Percent Tests Exceeding Maine Water Quality Standard from 2007 to 2011(Frick et al., 2013)............................................................................ 16 Figure 3-4: York Parks and Recreation Department Bacteria Sampling Results by Percent Exeedance of theMaine Water Quality Standard 2003 – 2011(Frick et al., 2013) ....................... 17 Figure 3-5: July 2012 Bacteria Concentrations Lower Cape Neddick River (Frick et. al, 2013) 28 Figure 3-6: May 2012 Bacteria Concentrations Lower Cape Neddick River ............................... 29 Figure 5-1: Bacteria Source Contributions by Land Use in the Cape Neddick River watershed . 37 Figure 5-2: Impact Level of Sites in the 2013 Watershed Survey. ............................................... 38 Figure 5-3: Land Use at Sites Observed During the 2013 Stormwater Survey ............................ 39 Figure 5-4: Erosion Site Cost Rating from the 2013 Stormwater Survey .................................... 40 ii FB Environmental Associates Cape Neddick River Watershed Based Management Plan February 2014 Table of Tables Table 3-1: Numeric Standards for Cape Neddick River Waters (Frick et al., 2013) .................... 10 Table 3-2: Cape Neddick River Water Quality Monitoring History 1995-2012 (Frick et al., 2013) ....................................................................................................................................................... 12 Table 3-3: Maine Healthy Beaches Enterococci Results at Cape Neddick Beach in York, Maine (colonies/100mL) .......................................................................................................................... 13 Table 3-4: Dissolved Oxygen Data – 2012 Cape Neddick River (Frick et al., 2013) .................. 23 Table 3-5: Bacteria Data – 2012 Cape Neddick River (Frick et. al, 2013).................................. 26 Table 3-6: Enterococci and Canine Detection