Leaching nitrogen from residential households remains the
single biggest threat to the water quality of Lagoon Pond,
according to a recently completed water quality study. In a
report delivered to the Lagoon Pond Association, its author
found significant increases in nitrates entering the pond. The
report is based on a series of water samplings conducted last
summer.
1987 Report on Water Quality Found Problems ‘Particularly
During the Summer Months'; Recommended Dredging
A comprehensive study documented water quality problems in the
Lagoon Pond 16 years ago, but the recommendations from the study -
including a dredging program - were never carried out because of a
lack of funding.
The director of the Martha's Vineyard Shellfish Group said yesterday that nearly four million healthy juvenile shellfish under culture at his Lagoon Pond hatchery have died in the last three weeks because of extremely poor water quality in the pond.
The deteriorating water quality has not affected mature shellfish and there is no danger to humans who eat shellfish from the pond.
The final Massachusetts Estuaries Project report on the health of Lagoon Pond was unveiled this week in Oak Bluffs, and the blunt diagnosis was summed up in two words: “significantly impaired.”
Dr. Brian Howes, technical director for the project, a joint venture of the state Department of Environmental Protection and the University of Massachusetts at Dartmouth, said that almost all of the 89 estuaries in southeastern Massachusetts are impaired. Lagoon Pond is no exception.
Cochlodinium, the rust-colored algae bloom that has turned up in Cape Pogue and Sengekontacket Ponds, has now invaded Lagoon Pond, Martha’s Vineyard Shellfish Group director Rick Karney confirmed this week. The algae was found in the west arm of the Lagoon.
Lagoon Pond is in trouble. Island residents heard a familiar story on Wednesday from representatives of the Massachusetts Estuaries Project about another degraded coastal pond on the Island, but town officials say that they are determined to find a solution.
