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USGS Water-Year Summary 2024
14369500 APPLEGATE RIVER NEAR WILDERVILLE, OR
LOCATION - Lat 42°21'15", long 123°24'20" referenced to North American Datum of 1927, in SE 1/4 NE 1/4 sec.16, T.37 S., R.6 E., Josephine County, OR, Hydrologic Unit 17100309, on left bank, 0.3 mi downstream from Jackson Creek, 3.8 mi northwest of Murphy and at mile 7.6.
DRAINAGE AREA - 698 mi².
REVISIONS HISTORY -
WSP 1318: 1943. WSP 1738: 1951, 1953, drainage area.
Revision: Annual maximum gage-height for water years 1987-1989 were revised on Dec. 1, 2023, based on further review of the annual peak gage-height record.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1938 to September 1955, September 1978 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 947.18 ft above NGVD of 1929 (U.S. Army Corps of Engineers bench mark). Prior to September 1955, nonrecording gage at site 1,100 ft upstream at datum 2.36 ft higher.
REMARKS - Flow regulated since December 1980 by Applegate Lake (active capacity, 75,200 acre-ft). Many diversions for irrigation upstream from station. Wilderville ditch diverts up to 16 ft³/s, 0.3 mi upstream and at the mouth of Jackson Creek.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Dec. 22, 1955, reached a stage of 20.3 ft, from floodmark, former site and datum, discharge, 66,500 ft³/s, from rating curve extended above 12,000 ft³/s on basis of slope-area measurement of peak flow. Flood of February 1927 reached a stage of 22 ft, at former site, from local resident. Floods of Dec. 22, 1964 and Jan. 15, 1974, are known to have exceeded the December 1955 flood. No flow was observed at present site during the late summer of 1977.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 47,500 ft³/s Jan. 18, 1953, gage height, 18.3 ft, from floodmark, site and datum then in use, from rating curve extended above 12,000 ft³/s on basis of slope-area measurement of peak flow; minimum discharge, 0.78 ft³/s Aug. 22-24, 1979. Minimum since first filling of Applegate Lake, 7.0 ft³/s July 26-28, Aug. 11, 12, 2001.
WATER-QUALITY RECORDS
PERIOD OF DAILY RECORD - WATER TEMPERATURE: September 1978 to current year.
INSTRUMENTATION - Temperature probe and data logger.
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum, 29.0°C June 22, 1992; minimum, 0.0°C Feb. 6, 7, 1989.
