Hypoxia in Far Western Long Island Sound and Upper East River – 2014

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The Interstate Environmental Commission District (IEC District) has monitored the westernmost portion of the Western Long Island Sound Basin each year since 1991. Targeted water quality surveys are completed between June and September to document the transition of waters into and out of a state of hypoxia. This collaborative program is performed in support of the National Estuary Program’s Long Island Sound Study (LISS; http://longislandsoundstudy.net/).

IEC District’s 2014 monitoring program consisted of 7 surveys at 22 stations in Long Island Sound, from the upper East River to the far western Long Island Sound (also known as the Narrows; see maps above and below). In situ water quality measurements were recorded and surface samples were collected and analyzed for total suspended solids, chlorophyll a (a pigment in photosynthetic organisms used as an indicator of algal abundance), and nutrients (a priority water quality indicator and management concern identified by the Long Island Sound Study).

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