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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.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
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USGS Water-Year Summary 2024
03029000 CLARION RIVER AT RIDGWAY, PA
LOCATION - Lat 41°25'15", long 78°44'10" referenced to North American Datum of 1927, Elk County, PA, Hydrologic Unit 05010005, at bridge on State Highway 948 in Ridgway, 10 ft downstream from Elk Creek.
DRAINAGE AREA - 303 mi².
REVISIONS HISTORY -
Prior to January 20, 2023, the peak gage height for the 1994 water year was reported as 6.23 ft due to a data entry error.
Prior to March 30, 2011 and April 5, 2023, the datum of gage was erroneously reported as 1361.62 ft above National Geodetic Vertical Datum of 1929.
SURFACE-WATER RECORDS
PERIOD OF RECORD - 1940-1953, 1954 to 1993 (measurements only), 1994 to September 2017(annual peaks only), October 2017 to current year (continuous discharge).
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 1354.5 ft above North American Vertical Datum of 1988. Prior to Oct 12, 1962, at site 200 ft upstream, at datum 6.74 ft higher. Prior to April 5, 2023, the datum of gage was reported as 1354.88 ft above National Geodetic Vertical Datum of 1929 (from benchmark) in the manuscript. Also, prior to March 30, 2011 and April 5, 2023, the datum of gage was erroneously reported in GWSI as 1361.62 ft above National Geodetic Vertical Datum of 1929. Satellite and landline telemetry at station.
COOPERATION - Funding for the operation of this station is provided by Brookfield Power.
REMARKS - Flow regulated since June 1952 by East Branch of Clarion River Lake and at low flow by industrial plant above station. Records are good except those for estimated discharges, which are poor.
