USGS Water-Year Summary for Site 01363556

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	Available Parameters
	00060 Discharge(Mean)
	63680 Turbidity, Form Neph(Mean)
	80297 SS load, regres ss(Mean)
	99409 Susp sediment,wu,est(Mean)

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

01363556 ESOPUS CREEK NEAR LOMONTVILLE, NY

LOCATION - Lat 41°52'45.6", long 74°08'43.3" referenced to North American Datum of 1983, Ulster County, NY, Hydrologic Unit 02020006, on right bank at downstream side of abandoned bridge abutment upstream from Hurley Mountain Road, 5.6 mi downstream from Ashokan Reservoir, 1.2 mi southwest of Lomontville.

DRAINAGE AREA - 279 mi².

SURFACE-WATER RECORDS

PERIOD OF RECORD - November 2013 to current year.

GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 191.93 ft above NGVD of 1929 (Federal Emergency Management Agency flood-insurance study reference mark) and 190.96 ft above NAVD of 1988.

REMARKS - Flow from 256 mi² of drainage area regulated by Ashokan Reservoir since Sept. 9, 1913. Water diverted from Schoharie Creek through Shandaken Tunnel (station 01362230) since Feb. 3, 1924, enters Esopus Creek about 12.2 mi upstream from Ashokan Reservoir. Diversions for water supply of City of New York made from Ashokan Reservoir (station 01363400).
Water Years 2014-23: Records fair except those for estimated daily discharges, which are poor.

EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Apr. 3, 2005, reached a stage of 16.68 ft, from floodmark on left bank 30 ft downstream from gage.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 6,770 ft³/s, May 2, 2020, gage height, 9.24 ft; minimum discharge, 2.4 ft³/s, Oct. 3, 4, 2014, gage height, 2.01 ft.

WATER-QUALITY RECORDS

PERIOD OF DAILY RECORD - SUSPENDED-SEDIMENT DISCHARGE: November 2013 to current year.

REMARKS - Turbidity data are collected every 15 minutes using an in-situ turbidity probe located in a 2 inch pipe about 100 ft across stream on left bank in a separate gage shelter. Daily suspended-sediment load and concentration are derived from a regression equation relating turbidity to suspended-sediment concentration.

EXTREMES FOR PERIOD OF DAILY RECORD - SUSPENDED-SEDIMENT CONCENTRATION: Maximum daily mean, about 210 mg/L, Mar. 30, 2014; minimum daily mean, <1 mg/L, on many days during 2014-15 water years. SUSPENDED-SEDIMENT DISCHARGE: Maximum daily, 770 tons, Sept. 30, 2015; minimum daily, about 0.01 ton, Oct. 3, 2014, May 30, 2015.