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ALL DATA ARE EASTERN STANDARD TIME

USGS 03010820 ALLEGHENY RIVER AT OLEAN NY

PROVISIONAL DATA SUBJECT TO REVISION

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The 15-minute precipitation data for this station are temporary and will only be displayed for 120 days. Although the instrumentation is calibrated at least once/year, the temporary classification means that documented routine inspections and other quality assurance measures are not performed that would make the data acceptable for archival, retrieval, or future use in general scientific or interpretive studies.

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LOCATION.--Lat 42°04'23", long 78°27'04" referenced to North American Datum of 1983, Cattaraugus County, NY, Hydrologic Unit 05010001, on right bank in sewage treatment facility pump house, 1.6 mi downstream from Olean Creek, in Olean.
DRAINAGE AREA.--1,192 mi2.
PERIOD OF RECORD.--August 2010 to current year.
GAGE.--Water-stage recorder. Elevation of gage is 1,405 ft above NGVD of 1929, from topographic map.
REMARKS.--Water Year 2014: Records good except for estimated daily discharges, which are fair.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 27,300 ft3/s, Dec. 2, 2010, gage height, 15.74 ft; minimum discharge, 133 ft3/s, July 25, 2011, gage height, -1.09 ft.
EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum discharge, 59,000 ft3/s, June 23, 1972, provided by the U.S. Army Corps of Engineers.

Peak Flow and Stage Information
This station managed by the NY Water Science Center, Ithaca.

Available Parameters Available Period
All 3 Available Parameters for this site
  
00065 Gage height 2016-01-25  2016-05-24
00060 Discharge 2010-08-21  2016-05-24
00045 Precipitation 2016-01-25  2016-05-24

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


Gage height, feet

Most recent instantaneous value: 1.96   05-24-2016  04:30 EST
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Discharge, cubic feet per second

Most recent instantaneous value: 2,200   05-24-2016  04:30 EST
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Daily discharge, cubic feet per second -- statistics for May 24 based on 5 years of record more
Min
(2015)
25th
percen-
tile
Median Most Recent
Instantaneous
Value May 24
Mean 75th
percen-
tile
Max
(2011)
694 729 866 2200 3350 7230 8390