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Quantitative assessment of water quality in the Upper Esopus Creek using fatty acid content of periphyton

Dates

End Date
2012

Summary

Problem - The Esopus Creek is located in the Catskill Mountains of New York State and is part of the New York City (NYC) drinking water supply system. The basin was dammed in 1915 to form the Ashokan Reservoir splitting the creek into Upper (upstream of the reservoir) and Lower segments. The Schoharie Reservoir, located 27 miles north of the Ashokan Reservoir, supplies water to Upper Esopus Creek via the Shandaken tunnel. Waters from the Schoharie watershed enter Upper Esopus Creek at the Shandaken portal and travel 18 km before entering the Ashokan Reservoir. The two reservoirs account for approximately 40% of NYC’s mean annual water supply. Waters from the portal have been the focus of controversy and legal action, however, because [...]

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Attached Files

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LK00-E4201-Fig2.jpg
“Area of rock scraped for periphyton”
thumbnail 195.42 KB
LK00-E4201-Fig3.jpg
“Didymosphenia geminata bed in the Upper Esopus Creek”
thumbnail 367.16 KB
LK00-E4201-Fig4.jpg
“Esopus Creek at Coldbrook, NY”
thumbnail 211.22 KB
LK00-E4201-Fig5.jpg
“Map of study sites in the Upper Esopus Creek watershed”
thumbnail 1.8 MB
LK00-E4201-Fig6.jpg
“Upper Esopus Creek”
thumbnail 2.16 MB
LK00-E4201-Fig7.jpg
“Collecting periphyton samples from the Upper Esopus Creek”
thumbnail 2.22 MB
Shapefile: GlobalWatershedNY.zip
GlobalWatershedNY.shp 135.29 KB
GlobalWatershedNY.dbf 2.65 KB
GlobalWatershedNY.shx 108 Bytes
GlobalWatershedNY.prj 424 Bytes

Project Extension

projectStatusCompleted
projectProducts
productDescriptionGeorge, S.D., Ernst, A.G., Baldigo, B.P., and Honeyfield, D.C., 2016, Response of periphyton fatty acid composition to supplemental flows in the upper Esopus Creek, Catskill Mountains, New York: U.S. Geological Survey Scientific Investigations Report 2015–5161, 22 p., with appendixes, http://dx.doi.org/10.3133/sir20155161"
statusDelivered
parts
typeShort Project Description
valuePrimary objectives of the study are to use fatty acid composition of periphyton to characterize local water quality conditions in the Upper Esopus Creek, and determine if fatty acid composition corroborates water quality impacts identified by water chemistry and biological community indicators, upstream versus downstream of the Shandaken portal.

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Communities

  • USGS New York Water Science Center

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Additional Information

Alternate Titles

  • QW Upper Esopus Fatty Acid

Identifiers

Type Scheme Key
projectId BASIS+ LK00-E4201

Shapefile Extension

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