Watershed Assistance

Watershed Assistance Documents

• Nonpoint Source Management Plan – The goals of the New Hampshire NPS Program are defined within the New Hampshire NPS Management Program Plan. The plan is updated every 5 years and approved by the U.S. Environmental Protection Agency.
• EPA's Bioretention Design Handbook – This handbook was developed to inform practitioners about the latest trends and approaches for bioretention design, construction, inspection and maintenance. The handbook contains a compilation of the current state of knowledge from published literature, interviews, and site visits with leading municipalities and practitioners across the United States. A unique feature of the handbook is the numerous photographs of bioretention facilities from more than 20 municipalities across the contiguous United States that showcase the diversity of design techniques.
• Nippo Lake, Barrington, NH Aluminum Compound Treatment Report and Nippo Lake Supplementary Materials – If you need accommodations for this document, please contact Dave Neils at david.e.neils@des.nh.gov.
• New Hampshire’s Homeowner’s Guide to Stormwater Management – Do-It-Yourself Stormwater Solutions for Your Home - Every single property has the potential to contribute to water pollution. NHDES created a comprehensive guidance document and a hands-on voluntary program to assist New Hampshire home and small business owners in reducing water pollution.
• New Hampshire Stormwater Manual – The New Hampshire Stormwater Manual was developed in 2008 as a planning and design tool for the communities, developers, designers and members of regulatory boards, commissions, and agencies involved in stormwater programs in New Hampshire.
• UNH Cooperative Extension Stormwater Resources – The UNH Cooperative Extension offers resources related to stormwater management and reports from NHDES-funded projects. Check out “Protecting Water Resources and Managing Stormwater: A Bird’s Eye View for New Hampshire Communities” and “Model Stormwater Standards for Coastal Watershed Communities.”
• Watershed-based Plans – Required for funding for Clean Water Act Section 319 funds, watershed-based plans work toward water quality goals to either restore impaired waters, or to meet long-term goals for high quality waters. See the EPA "Handbook for Developing Watershed Plans” for more information on the EPA Section 319 funding criteria for watershed–based plans. Contact us for more information
• Watershed Restoration Success Stories – This page features stories about primarily nonpoint source pollution-impaired water bodies, where restoration efforts have led to documented water quality improvements.