USGS Water-Year Summary for Site 11058500

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

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.

REVISIONS HISTORY - 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).

SURFACE-WATER RECORDS

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. Datum of gage is 1598.68 ft above NAVD of 1988.

REMARKS - No regulation upstream from station. One small diversion dam for domestic use upstream from station. See schematic diagram of Santa Ana River Basin available from the California Water Science Center.

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.

Maximum discharge, 6,000 ft³/s, December 25, 2003, gage height, 11.49 ft, on basis of critical depth; minimum daily discharge, 0.10 ft³/s, August 23, 1929.