USGS Water-Year Summary 2020
11274500 Orestimba Creek near Newman, CA
LOCATION - Lat 37°18'56", long 121°07'27" referenced to North American Datum of 1927, in NE 1/4 NE 1/4 sec.19, T.7 S., R.8 E., Stanislaus County, CA, Hydrologic Unit 18040002, on right bank, 20 ft downstream from bridge at California Aqueduct Siphon, 3 mi downstream from Oso Creek, and 5.5 mi west of Newman.
DRAINAGE AREA - 134 mi².
- WSP 1445: 1932 (instantaneous maximum discharge), 1938 (peaks above base), 1940-41 (instantaneous maximum discharge), 1945, 1951 (instantaneous maximum discharge). WSP 1930: Drainage area, WDR CA-95-3: 1986 (instantaneous maximum discharge).
PERIOD OF RECORD - January 1932 to current year.
GAGE - Water-stage recorder and crest-stage gage. Elevation of gage is 216 ft above NGVD of 1929. Prior to Oct. 1, 1958, at site 1,080 ft downstream at datum 24.14 ft lower. Oct. 1, 1958, to Aug. 13, 1969, at site 960 ft downstream at datum 27.14 ft lower. Aug. 13, 1969, to Feb. 6, 1984, at site 240 ft upstream, present datum.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 12,000 ft³/s, Mar. 10, 1995, gage height, 9.51 ft, from rating curve extended above 4,000 ft³/s, on basis of critical depth measurement; no flow for all or part of each year.
PERIOD OF RECORD
CONTINUOUS WATER-QUALITY DATA:
SPECIFIC CONDUCTANCE: Water years January 2020 to current year.
WATER TEMPERATURE: Water years January 2019 to current year.