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The UNH Stormwater Center (UNHSC) is dedicated to the protection of water resources through effective stormwater management.

  • aerial view of Boulder Hills

    New Hampshires first porous asphalt road located at the Boulder Hills subdivision, Pelham, NH, Installed Fall 2009.

  • students posing with construction equipment

    School Street School students help install a raingarden, Rochester, NH, Fall 2010

  • Tree in Portsmouth

    Hodgson Brook Tree Filter, Portsmouth, NH, Installed 2010 with the Hodgson Brook Watershed Association, and the City of Portsmouth.

  • day-lighted headwaters, berry brook, Dover NH

News & Announcements

  • UNHSC releases its next report

    Breaking Through, the University of New Hampshire Stormwater Center's 2016 report is now available.  To download click here:

    Breaking Through, UNHSC 2016 Report

  • UNHSC Director Dr. Tom Ballestero recieves Water Resource Innovation award

    During the International Low Impact Development Conference held in Portland Maine this past August, 2016 the conference committee presented the first International Low Impact Development Conference Water Resource Innovation Award.

  • UNHSC Innovative Bioretention Template for pollutant reductions in the Great Bay Estuary Watershed

    As part of the Great Bay Estuary Municipal Bioretention Education, Resource Development and Implementation Project, Phase II, conducted by UNHSC and funded by NHDES and NHCP a template to promote project transfelability to other communities has been developed. 

Recent Projects

Undersized GI System Performance

This report details results from two years of study of two undersized stormwater control measures.... More »

Stormwater Standards for the future

UNHSC, in collaboration with VHB, SRPC and the Town of Durham recently completed a study modeling... More »

Greenland Mall, Packard Development and the Conservation Law Foundation, Greenland, NH

In 2007, Packard Development, the Conservation Law Foundation, UN HSC, and Gove Environmental... More »