Nantucket Harbor
Nantucket Harbor has an approximate area of 5,254 acres with a drainage basin of approximately 5,340 acres. Water quality has been monitored in Nantucket Harbor since 1990.
Map of Sampling Stations | Annual Reports

Madaket Harbor
Madaket Harbor and Long Pond make up a unique ecosystem encompassing approximately 9 square miles. These two systems are hydrologically connected via Hither Creek and the Madaket Ditch. Long Pond is somewhat isolated from the whole system, and may be evaluated as having separate water quality issues. It is relatively narrow and winding with depths of 4-6 feet with no deep basins.
Map of Sampling Stations | Annual Reports

2008 & 2009 Reports
Due to lack of funding annual reports from 2008 and 2009 are not available. State required testing for shellfish and public beaches were preformed by the Massachusetts Department of Environmental Protection and the Massachusetts Division of Marine Fisheries.

A complete water report history is available online. Reports on list that are not found online are available by request.