USGS Water-Year Summary 2021
09487000 BRAWLEY WASH NEAR THREE POINTS, AZ
LOCATION - Lat 32°04'32", long 111°20'17" referenced to North American Datum of 1927, in SE 1/4 NE 1/4 SW 1/4 sec.32, T.15 S., R.10 E., Pima County, AZ, Hydrologic Unit 15050302, on right bank downstream side of State Highway 86 bridge, 1.6 mi west of Three Points, and 23 mi west of Tucson.
DRAINAGE AREA - 776 mi².
PERIOD OF RECORD - Oct. 1966 to Sept. 1981 (crest-stage gage) at site 1,000 ft downstream, May 1992 to current year.
GAGE - Water-stage recorder and crest-stage gages. Elevation of gage is 2,540 ft above sea level, from topographic map. Prior to May 19, 1992, gage was located 1,000 ft downstream from current location.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum discharge, 19,100 ft³/s Oct. 1, 1983, from contracted opening measurement of peak flow, gage height 12.07 ft from floodmarks.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge 13,700 ft³/s Sept. 4, 1970, gage height 15.8 ft site and datum then in use; Minimum discharge, no flow for most of each year.