Summer 2018 Hypoxia Monitoring
Hypoxia Monitoring Overview
The 2018 sampling schedule included routine water quality surveys as well as summer-only hypoxia surveys.
Routine water quality surveys are conducted year-round, including during the summer months. During these surveys water samples are collected for from 17 stations and analyzed for nutrients and other water quality parameters. In addition, phytoplankton and zooplankton samples are collected from 6 stations in the Sound.
Hypoxia surveys are conducted during the months of June through September at an additional 30 stations. During hypoxia surveys, stations are sampled for dissolved oxygen to get a more accurate understanding of the extent of summer hypoxia conditions in Long Island Sound bottom waters.
DEEP's Long Island Sound Water Quality Monitoring Program utilizes data from both surveys to monitor the extent of low dissolved oxygen in Long Island Sound bottom waters, or 'summertime hypoxia'. Hypoxia condition maps were posted as soon as possible after each survey. Biweekly newsletters, summarizing the results of each survey, are also distributed to interested parties.
2018 Monitoring Results
Select a sampling date below to view the progression of hypoxia in the western Sound throughout the summer of 2018.
June 2018
-
Water Quality Survey (WQJun18) Summary (Vol. 2, Issue 1)
-
WQJun18 Hypoxia Map (Not mapped; dissolved oxygen concentrations >5 mg/L)
-
Hypoxia Survey (HYJun18) Summary (Vol. 2, Issue 2)
-
HYJun18 Hypoxia Map (June 12, 2018)
-
Water Quality Survey (WQJul18) Summary (Vol. 2, Issue 3)
-
WQJul18 Hypoxia Map (July 2-5, 2018)
-
Hypoxia Survey (HYJul18) Summary (Vol. 2, Issue 4)
-
HYJul18 Hypoxia Map (July 16-18, 2018)
-
Water Quality (WQAug18) Survey Summary (Vol. 2, Issue 5)
-
WQAug18 Survey Hypoxia Map (July 30-August 2, 2018)
-
Hypoxia Survey (HYAug18) Summary (Vol. 2, Issue 6)
-
HYAug18 Survey Hypoxia Map (August 13-15, 2018)
-
Water Quality Survey (WQSep18) Summary (Vol. 2, Issue 7)
- WQSep18 Hypoxia Map (August 27-29, 2018)
-
Hypoxia Survey (HYSep18) Summary (Vol. 2, Issue 8)
-
HYSep18 Hypoxia Map (September 12, 2018)
LIS Hypoxia Monitoring Distribution List
Interested in receiving future biweekly survey summary newsletters? Email Katie O'Brien-Clayton at Katie.Obrien-Clayton@ct.gov to be added to the distribution list.
Long Island Sound Water Quality Monitoring Program Maps
Content last updated January 18, 2018