PREP Reports & Publications


Working within the University of New Hampshire (UNH) Cooperative Extension/Sea Grant Program, the Great Bay Coast Watch (GBCW) is New Hampshire’s most wide ranging program for direct citizen involvement in monitoring estuarine and coastal systems. GBCW has a fifteen year history of educating citizens about the Great Bay Estuary, New Hampshire Seacoast, and Gulf of Maine watershed through active participation in monitoring and an accompanying education program. Based in Durham, NH, GBCW coordinates over 100 volunteers drawn from 19 New Hampshire and Southern Maine communities. In 1990, volunteers began monitoring eight sites on a monthly basis April through October. Today, this effort has grown to include 21 sites that are sampled monthly for water quality around the Great Bay estuary, and six coastal sites that are monitored weekly for harmful algae blooms. Volunteers include adults, students, and home schooled families.


Piscataqua Region Estuaries Partnership

Publication Date



New Hampshire Estuaries Project

Document Type