DEEP: Hypoxia maps - Summer 2016

Dissolved Oxygen Maps for Summer 2016

During the summer of 2016, DEEP's Long Island Sound Water Quality Monitoring Program continued to monitor the extent of summertime hypoxia. The Program collects water samples for nutrient analysis and water quality parameters from 17 year round stations, as well as phytoplankton and zooplankton samples from 6 stations located throughout the Sound. An additional 30 stations are being sampled during the summer for dissolved oxygen to get a more accurate idea of the extent of hypoxia.

Maps showing the extent of low dissolved oxygen in Long Island Sound are posted as soon as possible after each survey.

Sampling dates are scheduled throughout the summer and into September if hypoxia persists beyond Labor Day. Select a sampling date below to view the progression of hypoxia in the western Sound throughout the summer.

July 5-7, 2016

July 18-19, 2016

August 1-4, 2016 

August 16-18, 2016

August 29-31, 2016

September 12-13, 2016






Content last updated March 3, 2017