2017 NH Small MS4 General Permit:

NH MS4 Proposed Modifications (Historic Documents):

Seacoast NOI Template and Guidance:

The documents below were produced collaboratively with the Seacoast Stormwater Coalition and Rockingham Planning Commission.  The materials are intended to assist with the preparation of the MS4 NOI for NH Communities.  Please note that some of the information is specific to the communities contained within the Seacoast Stormwater Coalition.

2019 Annual Report Templates and Guidance

2020 Annual Report Templates and Guidance

2021 Annual Report Templates and Guidance

NH Small MS4 Yearly Requirements

EPA Audits of NH MS4s

Part II: Summary of Receiving Waters

Part III: Stormwater Management Program Summary Minimum Controls

-Stormwater Management Program (SWMP)


– Minimum Control Measure 1: Public Outreach and Education


  • MCM #1 – Part III Matrix: Resident and Business and Institution Audience suggested NH outreach efforts – with no impairments or TMDLs or miscellaneous overarching campaigns – 2 messages per audience per permit term (5 years).

– Minimum Control Measure 2: Public Involvement and Participation

– Minimum Control Measure 3: Illicit Discharge and Elimination (IDDE)

– Minimum Control Measure 4: Construction Site Stormwater Runoff Control

– Minimum Control Measure 5: Post Construction Stormwater Management in New and Redevelopment

– Minimum Control Measure 6: Municipal Good Housekeeping and Pollution Prevention