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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
01431500 LACKAWAXEN RIVER AT HAWLEY, PA
LOCATION - Lat 41°28'34", long 75°10'21" referenced to North American Datum of 1927, Wayne County, PA, Hydrologic Unit 02040103, on left bank at bridge on Church Street in Hawley, 700 ft upstream from Wallenpaupack Creek, and 3,000 ft downstream from Middle Creek.
DRAINAGE AREA - 290 mi².
REVISIONS HISTORY - WSP 1951: 1938-41. WSP 1302: 1909-17. WSP 1432: 1942. WSP 1502: 1956. WDR-US-2013:2010(M).
SURFACE-WATER RECORDS
PERIOD OF RECORD - July 1908 to September 1917, August 1938 to current year. Monthly discharge only for some periods, published in WSP 1302. October 1917 to December 1919, gage heights and discharge measurements only, in reports of Water Supply Commission of Pennsylvania.
GAGE - Water-stage recorder, crest-stage gage, water-quality monitor, and heated tipping bucket precipitation gage. Datum of gage is 868.45 ft above North American Vertical Datum of 1988. Prior to 1938, non-recording gage at same site and datum, and Aug 20, 1955 to Feb. 13, 1956, non-recording gage at site 1,000 ft downstream at same datum. Prior to November 10, 2022, the datum of gage was reported as 869.00 ft above National Geodetic Vertical Datum of 1929. Satellite and landline telemetry at station.
COOPERATION - Station established and maintained by the U.S. Geological Survey in cooperation with the U.S. Army Corps of Engineers, Philadelphia District, the U.S. Geological Survey Office of the Delaware River Master, and Brookfield Renewable.
REMARKS - Regulation since 1960 by Prompton Reservoir (station 01428900) 14.9 mi upstream, and at high flow since 1959 by General Edgar Jadwin Reservoir (station 01429400) 13.0 mi upstream. Records are good except those for estimated discharge, which are poor.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of 1936 reached a stage of 19.1 ft at present site, 13.9 ft at former site, from floodmarks, discharge, about 27,600 ft³/s.
WATER-QUALITY RECORDS
PERIOD OF DAILY RECORD - WATER TEMPERATURE: August 2007 to current year.
REMARKS - Cross-sectional water temperature data is available upon request. Historically water temperatures below 0 degrees Celsius were not reported. Water temperature sensors now have the ability to accurately read water temperatures below 0 degrees Celsius. Subsequent to water year 2015, water temperatures below 0 degrees Celsius are reported.
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum, 31.7°C, July 7, 2010; minimum, 0.0°C or below, several days during winter periods.
