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USGS 0423406130 SENECA RIVER AT FREE BRIDGE CORNERS NY

PROVISIONAL DATA SUBJECT TO REVISION

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> Site Information
LOCATION.--Lat 42°57'46.3", long 76°44'14.0" referenced to North American Datum of 1983, Seneca County, NY, Hydrologic Unit 04140201, on right bank 50 ft upstream from bridge on State Highway 20 and 1.0 mi downstream from Lock 1 on Cayuga-Seneca Canal.
DRAINAGE AREA.--1,566 mi².
PERIOD OF RECORD.--December 2014 to current year.
GAGE.--Acoustic velocity meter and water-stage recorder. Datum of gage is 367.00 ft above NAVD of 1988. Prior to Mar. 1, 2019, at datum 67.00 ft lower.
REMARKS.--Flow regulated by Lock 1 on Cayuga-Seneca Canal. Flow can be affected by operation of Erie (Barge) Canal.
Water Years 2015-24: Records good except those for estimated daily discharges and those below 500 ft³/s, which are poor.
EXTREMES FOR PERIOD OF RECORD.--Maximum daily discharge, 6,840 ft³/s, Nov. 9, 2021; minimum discharge not determined.
> Rating Information
This station managed by the NY Water Science Center Ithaca.

Available Parameters Available Period
  
2014-12-09  2025-11-06
2014-12-08  2025-11-06
2025-07-09  2025-11-06
2025-07-09  2025-11-06







 (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: 2130 11-06-2025   09:45 EST
Graph of Discharge, cubic feet per second

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Daily discharge, cubic feet per second -- statistics for Nov 6 based on 10 water years of record more
Min
(2016)		 25th
percen-
tile		 Most Recent
Instantaneous
Value Nov 6		 Median Mean 75th
percen-
tile		 Max
(2022)
164 1800 2130 2360 2540 3210 5860

Gage height, feet
Most recent instantaneous value: 6.40 11-06-2025   10:45 EST
Graph of Gage height, feet

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Stream water level elevation above NAVD 1988, in feet
Most recent instantaneous value: 373.39 11-06-2025   09:45 EST
Graph of Stream water level elevation above NAVD 1988, in feet

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Mean water velocity for discharge computation, feet per second
Most recent instantaneous value: 0.78 11-06-2025   10:45 EST
Graph of Mean water velocity for discharge computation, feet per second

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