USGS Water-Year Summary 2020
11058500 East Twin Creek near Arrowhead Springs, CA
LOCATION - Lat 34°10'45", long 117°15'53" referenced to North American Datum of 1927, in NE 1/4 NE 1/4 sec.14, T.1 N., R.4 W., San Bernardino County, CA, Hydrologic Unit 18070203, on right bank, 1,000 ft upstream from Del Rosa Water Co.'s Diversion, 0.5 mi south of Arrowhead Springs, and 1.0 mi downstream from Strawberry Creek.
DRAINAGE AREA - 8.80 mi².
- WSP 1635: 1924 (instantaneous maximum discharge), 1927, 1928 (instantaneous maximum discharge), 1929, 1932 (instantaneous maximum discharge). WSP 1928: Drainage area. Water-Data Report 2011 (daily discharges, Dec. 20-29, 2010, and instantaneous maximum discharge).
PERIOD OF RECORD - December 1919 to current year. Discharge measurements only, Nov. 8, 2002, to Sept. 30, 2003. Prior to October 1952, published as "Strawberry Creek near Arrowhead Springs."
GAGE - Water-stage recorder and concrete control. Elevation of gage is 1,590 ft above NGVD of 1929, from topographic map.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 6,000 ft³/s, Dec. 25, 2003, gage height, 11.49 ft, from floodmark left by debris flow, on basis of critical-depth measurement of peak flow; no flow for a portion of the day at times in 1929, 1931-35, and May 31, 2002 (during fire suppression activities).
The peak discharge for the flood of Dec. 25, 2003, is based on hydraulic computations that were applied to a possible debris or hyperconcentrated flow. It is also likely that the peak stage of 11.49 ft was left by a debris or hyperconcentrated flow event at the gage, which is not associated with the site of the critical-depth survey, 400 ft downstream of the gage. The peak of Dec. 25, 2003, was the result of an intense rain storm less than two months after a wildfire burned over 90 percent of the drainage basin.