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Town of Wappinger Stormwater Management Program (SWMP)

Our water is one of our most valuable resources.  This includes not only our drinking water obtained from groundwater, but also our natural resources such as waterbodies, watercourses, floodplains and wetlands.  It is of the upmost importance that we protect and prevent the discharge of various pollutants from stormwater runoff into our water resources and maintain a high degree of water quality standards.  Clean water is a value to the entire community and for the protection of our environment to include our wildlife and habitat.  The Town of Wappinger has adopted multiple measures and standards to protect water quality within our community through the development of a Stormwater Management Program (SWMP).

In compliance with the EPA’s Phase II Stormwater Rule the Town of Wappinger was designated as a Small MS4 (Municipal Separate Storm Sewer System) by the New York State Department of Environmental Conservation (NYSDEC) in 2003.  As a regulated MS4 the Town of Wappinger has developed and implemented a Stormwater Management Program (SWMP) utilizing six Minimum Control Measures (MCMs).  The six Minimum control measures include:

  1. Public Education and Outreach:

This measure includes distributing educational materials and performing outreach to inform citizens about the impacts polluted storm water runoff discharges can have on water quality.  Municipalities shall describe steps to reduce storm water pollution and inform households and individuals on proper septic system maintenance, limiting use of runoff and garden chemicals, local stream restoration, etc.  Information should also be directed to targeted groups such as commercial, industrial and institutional entities.  The municipality should address the viewpoints and concerns of all sub-communities.

  1. Public Involvement and Participation:

This measure includes providing for citizens to participate in program development and implementation, including effectively publicizing public hearings and/or encouraging citizen representatives to participate in the MS4s SWMP.  The MS4 shall encourage community participation and volunteers to work with, and assist with the MS4 throughout its ongoing implementation of its SWMP.

  1. Illicit Discharge Detection and Elimination:

This measure includes developing and implementing a plan to detect and eliminate illicit discharges to the storm drain system including developing system mapping and informing the community about hazards associated with illegal discharges and improper waste disposal.  Mapping should show the location of major pipelines, outfalls and topography, areas of concentrated activities likely to be sources of storm water pollutants such as recreational areas and define watershed basins.  Municipalities must effectively prohibit illicit discharges into MS4 systems through the use of ordinances, orders, etc. and implement enforcement procedures and actions.  They must identify illicit connections such as sanitary connections into the storm sewer system, develop a plan to detect illicit discharges and illicit dumping and must inform public employees, businesses and citizens of hazards arising from illegal discharges.

  1. Construction Site Runoff Control:

This measure includes developing a plan to reduce storm water pollution from construction activities and developing, implementing and enforcing an Erosion and Sediment Control program or ordinance for construction that meets or exceeds the requirements as set forth in NYSDEC SPDES General Construction Permit GP-0-15-002 for construction activities that disturb an area equal to or greater than one acre of land.  This measure must include requirements for construction site owners, operators and contractors to implement Best Management Practices (BMPs), a comprehensive pre-construction review of site plans with recommendations, procedures to receive and consider public input, regular inspections of BMPs during construction and penalties to insure compliance.


  1. Post-Construction Site Runoff Control:

This measure includes developing, implementing and enforcing a program to address discharges of post-construction storm water runoff from new development and redevelopment areas from project sites disturbing land equal to or greater than one acre of land and project sites discharging into MS4s.  This program must include site appropriate, cost-effective structural and non-structural BMPs that emphasize management and source controls.  This program should be based on local watershed planning and measures to prevent or minimize water quality impacts and to insure the long-term operation, inspection and maintenance of structural BMPs.  The EPA recommends BMPs that minimize water quality impacts and that maintain pre-development runoff conditions.


  1. Pollution Prevention and Good Housekeeping:

This measure includes developing and implementing a program of your infrastructure and operations and maintenance with the goal of preventing or reducing pollutant runoff from municipal operations.  This program must include municipal staff training on pollution prevention measures.  Municipalities must provide municipal employee training with regard to park and open space maintenance, fleet maintenance, building management, storm drain system maintenance and the proper disposal of waste removed from the storm drains.  Controls should be implemented for reducing pollutants from streets, parking lots, corporation yards and solid waste operations.



SWMP Organizational Structure

2019 Stormwater Outfall Map – Click to enlarge

Stormwater Outfall Map 2019

Additional Links :

NYSDEC MS4 Permit:   http://www.dec.ny.gov/chemical/43150.html#Permit

NYSDEC Construction Permit:  https://www.dec.ny.gov/chemical/43133.html

DCSWCD:   http://dutchessswcd.org/stormwaterms4__trashed/ms4/

NYSDEC Main Stormwater Page:  http://www.dec.ny.gov/chemical/8468.html

NYSDEC  Getting Started with Your MS4 SWMP Plan:  http://www.dec.ny.gov/docs/water_pdf/ms4considerations.pdf

NYSDEC Construction Stormwater Toolbox:  http://www.dec.ny.gov/chemical/8694.html

NYSDEC MS4 Toolbox:  http://www.dec.ny.gov/chemical/8695.html

New York State Standards and Specifications for Erosion and Sediment Control:  https://www.dec.ny.gov/docs/water_pdf/2016nysstanec.pdf

New York State Stormwater Management Design Manual:  https://www.dec.ny.gov/chemical/29072.html

EPA National Pollution Discharge Elimination System (NPDES) Stormwater Program:  https://www.epa.gov/npdes/npdes-stormwater-program

The Center for Watershed Protection:  https://www.cwp.org/

Town Of Wappinger 2020-2021 *DRAFT* SWMP Annual Report

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Town Of Wappinger 2019-2020 SWMP Annual Report

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Stormwater Management Program Plan

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Illicit Discharge Report Form

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Stormwater Hotline
297-6256 ext 125

Town of Wappinger Stormwater Management Ordinance

Stormwater Educational Materials