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USGS 01350180 SCHOHARIE CREEK AT NORTH BLENHEIM NY

PROVISIONAL DATA SUBJECT TO REVISION

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LOCATION.--Lat 42°27'57", long 74°27'44" referenced to North American Datum of 1983, Schoharie County, NY, Hydrologic Unit 02020005, on left bank 2,300 ft upstream from West Kill, and 1.2 mi upstream from bridge on State Highway 30 in North Blenheim.
DRAINAGE AREA.--358 mi².
PERIOD OF RECORD.--Occasional discharge measurements, water years 1969-70. October 1970 to current year (January 20 to September 30, 1996, discharges only for days of mean flow less than or equal to 400 ft³/s).
REVISIONS HISTORY.--WDR NY-87-1: 1984(M). WDR NY-90-1: Drainage area. WDR-US-2011: 2010(M).
GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 793.92 ft above NAVD of 1988. Prior to Oct. 1, 1971, at datum 1.00 ft higher.
COOPERATION.--Records of flow provided by the New York Power Authority as explained in REMARKS.
REMARKS.--

Regulation of flow by New York Power Authority Blenheim-Gilboa Pumped Storage Project immediately upstream from gage. Entire flow, runoff from 315 mi², except for periods of spill, diverted from Schoharie Reservoir through Shandaken Tunnel into Esopus Creek upstream from Ashokan Reservoir for water supply of City of New York. For days of reservoir outflow greater than 10 ft³/s, see station 01350101. From Jan. 19, 1996, through Sept. 30, 1998, if flow was greater than about 400 ft³/s, undetermined amounts of flow bypassed the gage. From Oct. 1, 1998, through Sept. 30, 2000, if flow was greater than about 2,000 ft³/s, undetermined amounts of flow bypassed the gage. From Oct. 1, 2000, through Sept. 30, 2006, if flow was greater than about 5,000 ft³/s, undetermined amounts of flow bypassed the gage. From Oct. 1, 2006, through Aug. 27, 2011, if flow was greater than about 6,000 ft³/s, undetermined amounts of flow bypassed the gage. From Aug. 28, 2011, through Sept. 30, 2012, if flow was greater than about 30 ft³/s, undetermined amounts of flow bypassed the gage. From Oct. 1, 2012, through current year, if flow is greater than about 10,000 ft³/s, undetermined amounts of flow bypass the gage. Since October 1996, records for periods when flows bypass the gage are furnished by the New York Power Authority.
Water Years 2014-18: Records fair except those for estimated daily discharges, which are poor.


EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 119,000 ft³/s, Aug. 28, 2011, from New York Power Authority, gage height, 22.00 ft, outside gage height was 22.34 ft, from floodmark; minimum, no flow, Oct. 12, 15, Oct. 16 to Nov. 1, Nov. 2, 1972, Sept. 12, 13, 14, 1973.

Peak Flow and Stage Information

Gage PhotoStation image

 

This station managed by the NY Water Science Center Troy.

Available Parameters Available Period
  
1990-10-29  2019-12-10
2007-10-01  2019-12-10







 (7)
 

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Summary of all available data for this site
Instantaneous-data availability statement


Discharge, cubic feet per second

Most recent instantaneous value: 4660 12-10-2019   22:15 EST
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Daily discharge, cubic feet per second -- statistics for Dec 10 based on 48 water years of record more
Min
(1999)
25th
percen-
tile
Median Mean 75th
percen-
tile
Max
(1975)
Most Recent
Instantaneous
Value Dec 10
3.70 19 57 385 533 4550 4660


Gage height, feet

Most recent instantaneous value: 7.10 12-10-2019   22:15 EST
Graph of  Gage height, feet

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