Storm Water


Part of our commitment to serving the residents of Goffstown includes providing information that helps them to make more informed decisions about water quality issues and the public’s responsibilities in protecting surface water quality for current and future generations. ThisP5260003 - Use section of the Town’s website is a resource we hope you’ll find both useful and interesting. We genuinely hope this site is helpful to you in learning more about our Federal, State, and Town-driven responsibilities.


 Stormwater is a term used to describe the water that originates during precipitation events.  It may also apply to water that originates with snowmelt or runoff water from overwatering that enters the stormwater system.  Stormwater that does not soak into the ground becomes surface runoff, which either flows directly into surface waterways or is channeled in storm sewers, which eventually discharge to surface waters. In adBridge 2 - outlet POST CONST - USEdition to washing pollutants into our surface waters, improperly managed stormwater runoff can result in soil erosion and flooding.


If you have any questions regarding the stormwater within the Town of Goffstown, NH, please contact: 

  • Eric Gustafson
  • Engineering Technician
  • Goffstown Public Works Department PublicWorksSign
    404 Elm Street 
    Goffstown, NH 03045
  • Phone: 603-497-3617 Ext. 227 
  • Fax: 603-497-5700
  • Follow us on Facebook

Be Water Smart & Money Smart

Ever think why is my water bill so high? What is that drip noise? Read the "Fixing Leaks" tab given to you for some quick water statistics and a three-step check for your house to save water and money!

Fixing Leaks

See the link given for some DIY tips to make your yard water-smart and money-smart.

Illicit Discharge

Learn about what's polluting our water and how you can reduce your impact. Common pollutants can be easily disposed of without affecting the stormwater system and impairing bodies of water in our town. Learn how to manage pollutants and household hazardous waste.

Municipal Separate Storm Sewer System (Ms4) General Permit

Please visit the following links for further information regarding Small MS4s:

Information for Engineers & Contractors

Stormwater information for engineers and contractors completing construction projects within the Town of Goffstown.


  • Forms
  • Total Maximum Daily Load (TMDL)
  • Threatened and Endangered Species
  • Cultural Resources
  • Stormwater Pollution Prevention Plan (SWPPP)
  • Best Management Practices (BMPs)
  • Town Regulations


The Federal Water Quality Act of 1987 recognized that runoff from urban areas and industrial sites contributed to the pollution of surface waters. It required the U.S. Environmental Protection Agency (EPA) to address stormwater discharges using a two-phased approach. The Phase I final regulations were published in November of 1990. The Phase II final regulations were published in December of 1999.

In Phase I, the EPA required medium to large municipal separate storm sewer systems (MS4) operators to obtain permit coverage. These100_1072 - USE MS4s generally served areas with populations of 100,000 or more. Dischargers of "stormwater discharges associated with industrial activity" were also required to apply for permits.  

Phase II regulates small municipal separate storm sewer system (Small MS4) discharges in Urban Areas (UA), stormwater discharge associated with construction activity of one acre of greater, and municipally owned industrial activities. A "small" MS4 is any MS4 not already covered by Phase I of the NPDES Stormwater Program. Goffstown has been designated as falling within EPA's urban area definition for Phase II permitting.

Phase II of the stormwater program automatically applies to all construction activities disturbing one or more acres of land. These sites must receive an NPDES Permit before any earthmoving activities begin. EPA may require construction sites disturbing less than one acre of land to obtain a stormwater discharge permit if such activities would adversely affect water quality.

To comply with Phase II of the stormwater program, please follow the steps:

  • Determine which parties are considered "operators" responsible for complying with the Phase II requirements.
  • An "operator" of a construction site, such as a developer, maintains overall operational control over construction plans and specifications, including the ability to change these plans and specifications. An operator can also maintain day-to-day operational control over activities that will ensure compliance with the Stormwater Pollution Prevention Plan (SWPPP), such as the general contractor or subcontractor.
  • Complete and submit a Notice of Intent (NOI) to the Environmental Protection Agency (EPA) before construction activities that will cause land disturbance begin.
  • Develop a SWPPP before the start of construction. The DWP does not need to be submitted to the EPA but must be kept on the construction site and accessible to everyone during construction activities.
  • Implement the SWPPP, including completion of inspection reports that must be kept on-site.
  • Complete final stabilization of the site.

Complete and submit a Notice of Termination (Not) to EPA when any of the following occurs:

  • After the land-disturbing activities are complete and the site has been finally stabilized, the operator should terminate his coverage under the permit by completing the NOT form and submitting to the EPA. The United States Environmental Protection Agency considers that a site has been finally stabilized when all land-disturbing activities are complete and a uniform perennial vegetative cover with a density of 70% of the cover for unpaved areas and areas not covered by permanent structures has been established or equivalent permanent stabilization measures have been used.
  • The permittee is no longer an operator of the site.


Notice of Intent (NOI)

If a project disturbs over one acre of ground or is one part of a larger project that ultimately impacts over one acre of ground, a Notice of Intent (NOI) is required to be completely researched, filled out, and submitted to the EPA, either electronically via the internet or by hard copy with over-land dP2250040 - USEelivery (US Postal Service or an express delivery service company). If the NOI is submitted and the required items of concern on the form have not been properly reviewed to determine if they would be impacted by the project, the applicant and all pertinent parties associated with them (engineer, contractor, etc.) may be found to be liable for breaking all relevant Federal laws. It behooves all parties to ensure that they have done their due diligence before submitting the NOI.

To submit a NOI, use this link to obtain EPA's NOI materials and forms:

Total Maximum Daily Load (TMDL)

As stated by NHDES, "The Federal Water Pollution Control Act [PL92-500, commonly called the Clean Water Act (CWA)], as last reauthorized by the Water Quality Act of 1987, requires each state to submit two surface water quality documents to the U.S. Environmental Protection Agency (EPA) every two years. Section 305(b) of the CWA requires the submittal of a report (commonly called the "305(b) Report"), that describes the quality of its surface waters andcommon-loon-endangered-species-in-NewHampshire-UmbagogNationalWildlifeRefuge-MaryKonchar-USFWS (1) an analysis of the extent to which all such waters provide for the protection and propagation of a balanced population of shellfish, fish, and wildlife, and allow recreational activities in and on the water.

The second document is typically called the "303(d) List," which is so named because it is a requirement of Section 303(d) of the CWA. The 303(d) List includes surface waters that are:

  • Impaired or threatened by a pollutant or pollutant(s).
  • Not expected to meet water quality standards within a reasonable time even after application of best available technology standards for point sources or best management practices for nonpoint sources.
  • Require development and implementation of a comprehensive water quality study which is designed to meet water quality standardIMAG4491s. NHDES Water Quality Assessments and TMDL page.

Threatened & Endangered Species

Before the submittal of the NOI, the applicant must coordinate with the NH Natural Heritage Bureau and/or the U.S. Fish and Wildlife Service to ensure that the proposed project will not affect federally listed Threatened and Endangered Species.

Cultural Resources  

Section 106 of the National Historic Preservation Act requires that any project that uses Federal monies or requires a Federal permit or approval must allow the State Historic Preservation Office (the NH Division of Historical Resources [NHDHR] in NH, an opportunity to review the entire project’s impfeb08 - swaleacts on cultural resources (both archaeological and historical concerns). A memo or letter from NHDHR that states they have no concerns with the project should be obtained before the submittal of the NOI to EPA. Signing the NOI without finding out the project’s impacts on cultural resources may leave the applicant open to substantial legal liability.

Stormwater Pollution Prevention Plan (SWPPP)

A SWPPP must include the following information

  • Site description and design plans identifying potential sources of pollution that may affect the quality of stormwater discharges.
  • Appropriate Best Management Practices (BMPs), including erosion, sediment, and stormwater management controls to minimize the discharge of pollutants from the site.
  • Description of steps taken to prevent and control pollutants in stormwater discharge from the site, including an inspection schedule of all disturbed, unsterilized areas and maintenance of all controls to ensure their proper operation.
  • EPA SWPPP materials and forms

Best Management Practices (BMPs)

BMPs are schedules of activities, prohibitions of practices, maintenance procedures, and other management practices designed to prevent or reduce the pollution of waters of the United States. BMPs also include treatment requirements, operating procedures, and practices to control site runoff, spillage or leaks, waste disposal, or drainage from raw sewage. BMPs may include structural devices or nonstructural practices.

BMP Reference Materials

Town Regulations

The Town of Goffstown has specific site development regulations that establish set requirements for site designs within the Town. The site design and development criteria may be found at the link given:

  • Developmental and Zoning Regulations


If you have any questions regarding the stormwater permitting process within the Town of Goffstown, NH, please contact the Engineering or Administration offices at DPW.

  • Goffstown Public Works Department
    404 Elm Street
    Goffstown, NH 03045
  • Phone: 603-497-3617
  • Fax: 603-497-5700

Stormwater Information for General Public

What is Stormwater

The Purpose of the Stormwater Management Program Concentrated development in urbanized areas substantially increases impervious surfaces such as paved streets, driveways, parking lots, and sidewalks, in which pollutants from concentrated human activities settle and remain until a storm event is them into nearby storm drains. Polluted stormwater runoff transported to municipal separate storm sewer systems (MS4s) ultimately discharges into local rivers and streams without treatment. EPA's Stormwater Phase II Rule establishes an MS4 stormwater management program that is intended to improve the water quality of waterways by reducing the quantity Bridge 3 wingwall POST CONSTof pollutants that stormwaters pick up and carry into storm sewer systems during storm events. Common pollutants include oil and grease from roadways, pesticides from lawns, pet waste, sediment from construction sites, and carelessly discarded trash, such as cigarette butts, paper wrappers, and plastic bottles. When discharged into streams and rivers, these pollutants can impair the waterways, discouraging recreational use, contaminating drinking water supplies, and interfering with the habitat of fish, other aquatic organisms, and wildlife.

The Phase II program is designed to accommodate a general permit approach using a Notice of Intent (NOI) as the application.

Municipalities located within the U.S. Census Bureau's 2000 Urbanized Areas, which the Town of Goffstown is one of, are required to apply for the NPDES Permit coverage under the EPA Phase II Stormwater Permit Program. The following requirements for permit coverage apply to the Town of Goffstown:

  • The permit for MS4 operators will require the development of a stormwater management program that controls pollutants from all of the MS4 discharge points to the "Maximum Extent Practical."

The Phase II Rule defines a small MS4 stormwater management program comprising the following six elements that, when implemented in concert, are expected to result in significant reductions of pollutants discharged into receiving waters:

  • Public Education
  • Public Participation
  • Illicit Discharge Detection and Elimination
  • Construction Site Stormwater Runoff Control
  • Post-Construction Stormwater Management
  • Municipal Good Housekeeping

The stormwater discharge associated with industrial activity owned/ operated by the Town, such as the Department of Public Works garage, is also required to obtain coverage under the Phase II program.

HPIM1244 - USE

Construction activity within any part of the Town for sites from one to five acres is also regulated under the Phase II EPA program. The permit will require the owner and operator of the construction site to perform the following:

  • Implement Erosion and Sediment Control Best Management Practices (BMPs)
  • Control wastes such as discarded building materials, concrete truck washouts, and sanitary wastes.
  • Develop and implement a Stormwater Pollution Prevention Plan
  • Submit a Site Plan that incorporates consideration of potential water quality impacts.

The Town is essentially a compliance regulator for stormwater systems for development projects. Local town subdivision and site plan review regulations reflect stormwater requirements. Instituting this stormwater management plan by the Town is a means for Goffstown to develop, implemSwale Repair 5 - USEent, and enforce the reduction of pollutants in stormwater runoff from construction activities that result in land disturbance of greater than or equal to one acre. Some of the requirements in the Phase II rules may already be in place by the Town; however, they may need to be upgraded. These requirements would include:

  • Establish an ordinance or other regulatory mechanism requiring the implementation of proper erosion and sediment controls and controls for other wastes on applicable construction sites.
  • Have procedures for site plan review of proposed construction plans that consider potential water quality impacts.
  • Have procedures for site inspection and enforcement of control measures.
  • Have sanctions to ensure compliance (established in the ordinance or other regulatory mechanism).

For more information about the Town of Goffstown's MS4 Permit and Stormwater Management Program, visit the Town of Goffstown Website.

What We Do

The Stormwater interns are responsible for analyzing and updating the conditions of impaired and at-risk bodies of water in Goffstown. Inspections of outfalls detention ponds, and water sampling are conducted in the dry season to track the quality of water flowing into the streams, brooks, rivers, and lakes. Inspections and tests with poor results may suggest an illicit connection upstream. It is the responsibility of the Town to prevent the illegal discharge of pollutants into the waterways and take measures to fix these issues.

Outfalls are outlet pipes that carry stormwater into other bodies of water. There are many all over town that are inspected annually. If water is flowing through the outfall when there has been no recent rainfall, this can suggest an illicit connection. The inspections conducted look for physical signs of this, including damage to the outfall structure, vegetative growth, odor, turbidity, color, debris, and pollution.

Detention ponds and swales are catchment areas that are designed to filter and slow down the flow of water. There are also several of these around town that are inspected annually to determine their effectiveness. Attributes such as vegetation, sedimentation, slope protection, pond drainage, public hazards, and water conditions are taken into account during these inspections. Recently, the detention pond on Tyler Drive was reconstructed to better suit the needs of the drainage area and improve the condition of the surrounding stormwater.

Tyler Drive Detention Pond before and after:

Tyler Drive Detention Pond before

Tyler Drive Detention Pond after

In conjunction with NHDES, water sampling at the major waterways in Goffstown has been conducted for the past year. Samples are taken at specific points along Black Brook, Hardy Brook, Piscataquis River, Namaste Lake, Harry Brook, Bog Brook, St. Anselm's Brook, Riddle Brook, and Catamount Brook. These points are on the NH Threatened or Impaired Waters List. Water is tested for pH, dissolved oxygen, E coli, chloride, lead, hardness, chlorophyll, total phosphorous, and iron. Samples are taken up to the lab located at the NHDES offices.

Stormwater Media Center

Found here are a variety of websites that provide public information on several stormwater and environmental concerns. These sites contain reCompleted Box Culvert 2ading materials in various formats that are both informative and educational.

Stormwater for Kids

Several website resources provide fun, helpful information that kids can review and use to learn about water quality and other imporwatershed-7_26tant environmental issues. The more they know, the more kids will be informed to make good decisions in the future that will help themselves, the Town of Goffstown, and the overall environment!!

Stormwater Links

Listed here are links to agencies that may have information required to fill out an EPA Notice of Intent (NOI) or oversee a program or resource directly affected by stormwater.

US Environmental Protection Agency (EPA)

NH Department of Environmental Services

Management / Review of NPDES Phase II NOIS

Construction activities (including other land-disturbing activities) that disturb one acre or more are regulated under the NPDES Stormwater Program.

In New Hampshire, the Construction General Permit (CGP) outlines a set of provisions construction operators must follow to comply with the requirements of the NPDES stormwater regulations. The CGP covers any site one acre and above, including smaller sites that are part of a larger common plan of development or sale, and replaces and updates previous EPA Permits.

Permittees may contact the EPA's NOI Processing Center via online form or at 866-352-7755 for questions about filing by mail.

Included with the Town of Goffstown, listed given are the municipalities in New Hampshire regulated by the Phase II Rule. You will find maps, Notices of Intent, annual reports, and public notice status that can be viewed or downloaded.

If you know of an active construction site that is disturbing over one acre of ground and does not appear on the registry linked here, please contact the Town of Goffstown's Department of Public Works at 603-497-3617.