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USGS 04262000 OSWEGATCHIE RIVER NEAR OSWEGATCHIE NY

PROVISIONAL DATA SUBJECT TO REVISION

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> Site Information
LOCATION.--Lat 44°13'21.2", long 75°04'27.5" referenced to North American Datum of 1983, St. Lawrence County, NY, Hydrologic Unit 04150302, on left bank 300 ft downstream from powerplant, and 2.8 mi north of Oswegatchie.
DRAINAGE AREA.--259 mi².
PERIOD OF RECORD.--October 1924 to September 1968, annual maximum only--1985, July 1987 to current year. Prior to October 1958, published as East Branch Oswegatchie River near Oswegatchie.
REVISIONS HISTORY.--WDR NY-88-1: Drainage area.
GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 1,016.52 ft above NGVD of 1929 and 1,016.14 ft above NAVD of 1988.
REMARKS.--Extensive diurnal fluctuation at low and medium flow caused by powerplant. Entire flow from 140 mi² of drainage area controlled by Cranberry Lake (station 04260990).
Water Years 2014-24: Records good except those for estimated daily discharges, which are poor.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 4,370 ft³/s, Apr. 15, 2014, gage height, 6.45 ft; maximum gage height, 7.3 ft, Apr. 26, 1926; minimum discharge not determined.
EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum discharge, 2,850 ft³/s, Jan. 1, 1985, gage height, 6.06 ft, from floodmark.
> Rating Information
This station managed by the NY Water Science Center Potsdam.

Available Parameters Available Period
  
1990-10-01  2025-10-12
2007-10-01  2025-10-12







 (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: 170 10-12-2025   07:15 EST
Graph of Discharge, cubic feet per second

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Daily discharge, cubic feet per second -- statistics for Oct 12 based on 82 water years of record more
Min
(1964)		 Most Recent
Instantaneous
Value Oct 12		 25th
percen-
tile		 Median Mean 75th
percen-
tile		 Max
(2024)
4.60 170 227 321 364 451 1290

Gage height, feet
Most recent instantaneous value: 2.17 10-12-2025   07:15 EST
Graph of Gage height, feet

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