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Water-Year Summary for Site 03085500

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
  • For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
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Available Parameters
00060 Discharge(Mean)  

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

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USGS Water-Year Summary 2023
LOCATION - Lat 40°24'02", long 80°05'48" referenced to North American Datum of 1927, Allegheny County, PA, Hydrologic Unit 05030101, on left bank, 100 ft downstream from Hammond Street bridge, 0.3 mi downstream from Robinson Run, 0.8 mi upstream from Campbells Run, and 8.9 mi upstream from mouth.
DRAINAGE AREA - 257 mi².
PERIOD OF RECORD - October 1919 to September 1933, October 1940 to current year. Published as "at Crafton" October 1971 to September 1975. Monthly discharge only for some periods, published in WSP 1305. June 1915 to September 1919 (gage heights and discharge measurements only) in reports of Water Supply Commission of Pennsylvania.

Water-stage recorder and concrete weir control. Datum of gage is 754.9 ft. above North American Vertical Datum of 1988.  Prior to Dec. 15, 1931, non-recording gage at site 0.5 mi downstream at different datum. Jan. 8, 1932 to Sept. 30, 1933, non-recording gage at site 1.0 mi downstream at different datum. Nov. 20, 1940 to Aug. 18, 1967, water-stage recorder at site 400 ft upstream at datum 1.00 ft higher. Oct. 1, 1971 to Sept. 30, 1975, non-recording gage at site 4.6 mi downstream, at datum 29.46 ft lower. Prior to January 8, 2024, the datum of gage was reported as 755.45 ft above National Geodetic Vertical Datum of 1929.  Satellite telemetry at station.

COOPERATION - Station established and maintained by the U.S. Geological Survey. Funding for the operation of this station is provided by the U.S. Army Corps of Engineers, Pittsburgh District, the Pennsylvania Department of Environmental Protection, and the U.S. Geological Survey.
REMARKS - Some regulation at low flow by mine drainage, reservoirs, and industrial usage upstream from station. Record considered good except those for estimated daily discharge, which is poor.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Sep 2, 1912 reached a discharge of 20,000 ft³/s, from U.S. Army Corps of Engineers.