DEEP: Hypoxia maps - Summer 2017

Dissolved Oxygen Maps for Summer 2017

During the summer of 2017, DEEP's Long Island Sound Water Quality Monitoring Program continues 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.

June 5-8, 2017

June 20-21, 2017

July 5-7, 2017

July 18-20, 2017

July 31-August 2, 2017

August 14-16, 2017

August 28-September 1, 2017

Content last updated May 17, 2018