USGS Water-Year Summary 2023
15300100 BEAR CREEK NEAR ILIAMNA, AK
LOCATION - Lat 59°49'28", long 154°52'56" referenced to North American Datum of 1927, in SW 1/4 SW 1/4 sec.13, T.4 S., R.33 W., Lake and Peninsula Borough, AK, Hydrologic Unit 19030205, (Iliamna D-6 quad), on left bank about 50 ft upstream from culvert inlet on the Newhalen Road, 5.2 mi north of Iliamna airport.
DRAINAGE AREA - 5.50 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - Annual Maximum, water years 1965 and 1968. Records for 1966 and 1967 are in error and should not be used. Published as Newhalen River Tributary near Iliamna prior to August 2005. July 2005 to October 11, 2016.
GAGE - Water stage and temperature recorder and crest-stage gage. Elevation of gage is 250 ft above sea level, from topographic map. Prior to 2005 at different datum. GOES satellite telemetry at station.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water years 2005 to October 12, 2016.
PERIOD OF DAILY RECORD - WATER TEMPERATURE: July 2005 to October 12, 2016.
INSTRUMENTATION - Electronic water-temperature recorder set for 15-minute recording interval.
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum, 22.7°C, June 18, 2015; minimum, 0.0°C, many days during fall and winter.