- Public Works
- Bureau of Engineering
- Stormwater Information
What is Stormwater?
Stormwater is rainwater and melted snow that runs off streets, lawns, and other sites. When stormwater is absorbed into the ground, it is filtered and ultimately replenishes aquifers or flows into streams and rivers. In developed areas, however, impervious surfaces such as pavement and roofs prevent precipitation from naturally soaking into the ground. Instead, the water runs rapidly into storm drains, sewer systems, and drainage ditches and can cause: Downstream flooding Stream bank erosion Increased turbidity (muddiness created by stirred up sediment) from erosion Habitat destruction Changes in the stream flow hydrograph (a graph that displays the flow rate of a stream over a period of time) Combined sewer overflows Infrastructure damage Contaminated streams, rivers, and coastal water.
What is Illicit Discharge?
Federal regulations define an illicit discharge as “....any discharge to an MS4 that is not composed entirely of stormwater....” with some exceptions. These exceptions include discharges from NPDES-permitted industrial sources and discharges from fire-fighting activities. Illicit discharges are considered “illicit” because MS4s are not designed to accept, process, or discharge such non-stormwater wastes. Sources of illicit discharges include: sanitary wastewater, effluent from septic tanks, car wash wastewaters, improper oil disposal, radiator flushing disposal, laundry wastewaters, spills from roadway accidents, and improper disposal of auto and household toxics. To report illicit discharges into the storm sewer system, please e-mail: firstname.lastname@example.org
Stormwater Discharge - MS4 Report & MCC Form
In accordance with the NYSDEC requirements, the Town of Greenburgh prepared and filed the Notice of Intent (NOI) with the NYSDEC on March 5, 2003, to be covered under the Phase II SPDES General Permit GP-02-02 available through the NYSDEC. The Town prepared an initial Storm Water Management Program (SWMP), with an aim to set measurable goals that the Town has to implement and enforce in order to comply with the permit requirements. It describes various actions that the Town proposes to undertake over a period of five years starting from 2003, to protect the Town's storm water quality and reduce pollutants, until the full implementation of the SWMP (not later than January 8, 2008). In order to document progress towards achieving the measurable goals identified in the SWMP, the Town evaluates its program and submits an annual report with the results to the NYSDEC. Recently the Town of Greenburgh prepared the Storm Water Management Program Annual Report for the period March 10, 2018 to March 9, 2019, that was posted on the Town website for public review and input. The report illustrates the progress made by the Town towards the Notice of Intent and the Storm Water Management Program (SWMP) submitted by the Town to the NYSDEC in 2003.
Storm Water Contact Person: Aaron Schmidt Deputy Commissioner Community Development and Conservation Town of Greenburgh email@example.com
To report illicit discharges into the storm sewer system, please call the Bureau of Engineering at (914) 989-1583.
Relevant Websites for further information on these and other topics to prevent Pollution of Rivers, Streams and Water Bodies: United States Environmental Protection Agency and New York State Department of Environmental Conservation.
MS4 Reports & MCC Forms
This Year's MS4 Report & MCC Form
Previous Year's MS4 Reports & MCC Forms
- MS4 Draft 2021
- FINAL MS4 Annual Report 2019-2020
- MS4 Annual Report and MCC Form - 2019
- MS4 Annual Report and MCC Form - 2018
- MS4 Annual Report and MCC Form - 2017
- MS4 Annual Report and MCC Form - 2016
- MS4 Annual Report and MCC Form - 2015
- MS4 Annual Report and MCC Form - 2014
- MS4 Annual Report and MCC Form - 2013
- MS4 Annual Report and MCC Form - 2012
- MS4 Annual Report and MCC Form - 2011
- MS4 Annual Report and MCC Form - 2010
- MS4 Annual Report and MCC Form - 2009
- MS4 Annual Report and MCC Form - 2008
- MS4 Annual Report and MCC Form - 2007
- MS4 Annual Report and MCC Form - 2006
- What is Smart Growth?
"Smart growth" covers a range of development and conservation strategies that help protect our health and natural environment and make out communities more attractive, economically stronger, and more socially diverse. For more information, click here.
- Town Hall Stormwater Retrofit Tour Flyer (May 29, 2019)
In an effort to further educate residents, students and contracting professionals on stormwater runoff issues and low-impact management practices, the Town of Greenburgh Bureau of Engineering in conjunction with the Department of Community Development and Conservation present a guided tour by a knowledgeable, Licensed Professional Engineer or Certified Arborist. The guided tour will include information on: (1)The low-impact stormwater management design and practices implemented at the Town Hall, (2) The benefits of each low-impact stormwater management practice to the environment, and (3) Alternative low-impact stormwater management practices that can be implemented in future projects. When: Friday, May 29, 2015 Meeting Location: Greenburgh Town Hall Front Desk Meeting Time: 9:15 A.M.
- Arbor Day Foundation Poster - Trees Tame Stormwater
- Construction Site Operator's Guide
Information for Construction Site Operators, on how to obtain Stormwater Permit Coverage
- FISRWY - Stream Corridor Restoration
The Federal Interagency Stream Restoration Working Group. Stream Corridor Restoration: Principles, Processes, and Practices. 1998, last updated 2001. This document is a result of an unprecedented cooperative effort among fifteen Federal agencies and partners to produce a common reference on stream corridor restoration. It responds to a growing national and international public interest in restoring stream corridors. Increasingly, feature articles, case studies, and published papers focus on stream corridors as critical ecosystems in our living environment. The recent 25th anniversary of the Clean Water Act also has helped focus attention on stream corridor restoration. This document encapsulates the rapidly expanding body of knowledge related to stream corridors and their restoration. It makes no endorsement of one particular approach to restoration over another; nor is it intended as a policy document of any participating Federal agency. It includes the full range of possibilities facing restoration practitioners, including no action or passive approaches, partial intervention for assisted recovery, and substantial intervention for managed recovery.
- NYSDEC - Keep Water Clean
New York has 70,000 miles of rivers and streams, 4,000 lakes and ponds, 2.4 million acres of wetlands and extensive aquifers. These abundant resources need your protection to remain clean. Human activities leave behind materials like pesticides, pet waste, trash and even loose soil that can wash into our waters and pollute them. Even where you don't see a stream or lake, streets, roadside ditches and underground storm sewers carry polluted runoff into the closest waterbody. The good news is that your positive actions can do much to protect New York's waters.
- NYSDEC Construction Stormwater Permit Fact Sheet (PDF) - January 2010
This document describes how GP-0-10-001 differs from the preceding general permit, including enhanced pollution reduction requirements in specified watersheds.
- The Homeowner's Guide to Stormwater
- Town Hall Stormwater Retrofit Tour Flyer (February 27, 2015)
In an effort to further educate residents, students and contracting professionals on stormwater runoff issues and low-impact management practices, the Town of Greenburgh Bureau of Engineering in conjunction with the Department of Community Development and Conservation present a guided tour by a knowledgeable, Licensed Professional Engineer or Certified Arborist. The guided tour will include information on: (1)The low-impact stormwater management design and practices implemented at the Town Hall, (2) The benefits of each low-impact stormwater management practice to the environment, and (3) Alternative low-impact stormwater management practices that can be implemented in future projects. When: Friday, February 27, 2015 Meeting Location: Greenburgh Town Hall Front Desk Meeting Time: 2 P.M.
- Town Hall STormwater Retrofit Tour Flyer (January 23, 2015)
In an effort to further educate residents, students and contracting professionals on stormwater runoff issues and low-impact management practices, the Town of Greenburgh Bureau of Engineering in conjunction with the Department of Community Development and Conservation present a guided tour by a knowledgeable, Licensed Professional Engineer or Certified Arborist. The guided tour will include information on: (1)The low-impact stormwater management design and practices implemented at the Town Hall, (2) The benefits of each low-impact stormwater management practice to the environment, and (3) Alternative low-impact stormwater management practices that can be implemented in future projects. When: Friday, January 23, 2015 Meeting Location: Greenburgh Town Hall Front Desk Meeting Time: 2 P.M.
- USEPA - Managing Wet Weather with Green Infrastructure
This is a powerpoint presentation developed by Nancy Arazan, ORISE Fellow, EPA Water Permits Division.
- USEPA - Stormwater to Street Trees
This guide, prepared by the USEPA, is intended to help engineers, planners, developers, architects, arborists, and public officials understand how trees perform and interact in a stormwater management system, and the new technologies that are being used to increase the stormwater utility function of the urban forest, even in the densest urban environments.
- USEPA - National Management Measures to Control Nonpoint Source Pollution from Urban Areas
Publication Number EPA 841-B-05-004, November 2005 This document provides guidance which helps citizens and municipalities in urban areas protect bodies of water from polluted runoff that can result from everyday activities. These scientifically sound techniques are the best practices known today.
- Westchester Cty. SWM Planning Manual
The intent of the Westchester County Stormwater Management Planning Manual is to provide a planning framework for municipalities with which to manage stormwater on a watershed basis. In this way, stormwater management planning will occur within the parameters that hydrology and watersheds impose. By developing a watershed-wide planning approach, it will become easier to develop land use plans and zoning ordinances that encourage proper stormwater management, and that protect the natural hydrologic cycle and stream habitat from being degraded by improper development.
- What is Green Infrastructure?
This is an article by Scott Cullem, Consulting Arborist, examining the various meanings of the term "green infrastructure".
- Blue Cities Guide (Charles River Watershed Association)
With 80% of the United States population now living in cities, urban environmental challenges – air quality, energy consumption, transportation needs – are widely recognized. This Guide focuses on a less publicized issue that is likely to prove the most critical of all: water resource failure, and what can be done about it.
- Green Infrastructure for Stormwater Management Article (Portland, OR)
- Information on Rain Gardens
- New York State Household Detergent and Nutrient Runoff Law
The Household Detergent and Nutrient Runoff Law (Chapter 205 of the laws of 2010), was signed into law by the Governor on July 15, 2010. This law will improve water quality in New York by reducing phosphorus runoff into the State's waterbodies. It will also reduce costs to local governments and private entities required to remove excess phosphorus from stormwater and wastewater, and will expand recreational uses of the state's waters. New York State's law will not impact adopted local laws, including laws adopted in Westchester, Nassau, Suffolk and Chautauqua Counties and the Village of Greenwood Lake.
- NYS Thruway Authority Brochure - When it rains it drains - After the storm
- NYS Thruway Authority Brochure - When it rains it drains - What you can do to help
- NYSDEC - Information on Stormwater
- Penn State Univ. - College of Agricultural Sciences - Water Conservation for Communities (2010)
- Public Notice of Availability of 2009-2010 MS4 Phase II Annual Report and Program Plan
- Stormwater Management Article
Stormwater Pollution: What is the problem?
- Stormwater Management Fact Sheet - Grass Channel (stormwatercenter.net)
- Stormwater Management Website Link
StormwaterTools is brought to you by the Saw Mill River Coalition This site will serve as a virtual toolbox of ideas, techniques and real world examples to help you plan, design, implement and maintain simple LID/Better Site Design stormwater management practices for the home or local municipality. www.stormwatertools.org
- Stormwater Management Fact Sheet - Vegetated Buffer
Vegetated buffers are areas of either natural or established vegetation that are maintained to protect the water quality of neighboring areas. Buffers slow storm water runoff, thereby helping to prevent soil erosion; provide an area for the runoff to permeate the soil; contribute to ground water recharge; and filter sediment and nutrients. They also have long-term environmental and social values, such as: reserving space for trails and greenways; reducing impervious area; preserving wildlife habitat and corridors for wildlife migration; and preventing warming of water resources by shading such areas. Vegetated buffers can be used in any area able to support vegetation. They are most effective and beneficial on floodplains, near wetlands, along streambanks, and on unstable slopes.
- Sustainable Site Development - Stormwater Practices - City of Portland
- Top Ten Internet Resources for Low Impact Development
- USEPA - Clean Water State Revolving Fund - Factsheet
- USEPA - Make Your Home the Solution to Stormwater Pollution
- USEPA - Municipal Guide to Low Impact Development
- USEPA - NPDES - Stormwater & the Construction Industry Brochure - Maintain your BMP's
- USEPA - NPDES - Stormwater Discharges from Construction Activities Brochure
- USEPA - Protecting Water Quality from Urban Runoff
- USEPA - Stormwater Pollution Found in Your Area - Doorhanger
- USEPA - Stormwater Runoff Challenge - Placemat
- USEPA - Sustainable Communities - Putting Wetlands to Work in Your Watershed
- USEPA - Water-Efficient Landscaping
- USEPA Brochure - Clean Water - Everybody's Business - 10 things you can do to prevent Stormwater runoff pollution
- Westchester County - FAQ's on Imperviousness
- Westchester County - FAQ's on Stormwater Runoff
- Westchester County - Step by Step Guide to Cleaner Water