Connecticut Department of Energy & Environmental Protection

DEEP headquarters at 79 Elm Street in Hartford is currently closed due to recent water damage impacting multiple areas of the building. We are working to remediate the situation and get the building back open to staff and the public as soon as possible. While the building is closed, Staff continue to work either remotely or in alternate locations. We continue to be able to receive documents via U.S. Mail or courier service, and our electronic file submittal protocols remain unchanged. For updates, please click here

Dissolved Oxygen Maps for Summer 2000

During the summer of 2000 hypoxia (defined as dissolved oxygen (DO) concentrations below 3.0 mg/l) got off to an early start with an onset on or about July 2, 2000. By the middle of July hypoxic conditions affected 447 square kilometers (173 square miles) of Long Island Sound, a record for July. By August conditions had improved dramatically. During the August water quality surveys no hypoxia was observed after August 6. Using our data and weather patterns it was estimated that the end date for hypoxia was August 6 for a total of 36 days.

(Select  map below to link to a larger image)

Link to larger image of hypoxia map for August 29-September 1, 2000

August 29-September 1, 2000 		Link to larger image of hypoxia map for August 15-17, 2000

August 15-17, 2000		 Link to larger image of hypoxia map for July 31-Aug 8, 2000

July 31-Aug 8, 2000
Link to larger image of hypoxia map for July 18-21, 2000

July 18-21, 2000

Link to larger image of hypoxia map for July 5-10, 2000

July 5-10, 2000

Link to larger image of hypoxia map for June 22-26, 2000

June 22-26, 2000

Long Island Sound Water Quality Monitoring