USGS Water-Year Summary 2021
11048600 Bonita Creek at Irvine, CA
LOCATION - Lat 33°38'42", long 117°51'37" referenced to North American Datum of 1927, Orange County, CA, Hydrologic Unit 18070204, in San Joaquin Grant, on right bank, at downstream side of unnamed service road bridge, 0.45 mi upstream from mouth, at Irvine.
DRAINAGE AREA - 5.39 mi².
PERIOD OF RECORD - July 2001 to current year.
GAGE - Water-stage recorder, concrete control, and crest-stage gage. Elevation of gage is 30 ft above NGVD of 1929, from topographic map.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 3,710 ft³/s, Oct. 27, 2004, gage height, 14.89 ft, from rating curve extended above 200 ft³/s, on basis of critical-depth computation; no flow at times in some years.
PERIOD OF RECORD - Water years 2002 to 2012.
SEDIMENT DATA: Water years 2002 to 2012.