USGS Water-Year Summary 2021
09486350 CANADA DEL ORO BELOW INA ROAD, NEAR TUCSON, AZ
LOCATION - Lat 32°20'10", long 111°02'29" referenced to North American Datum of 1927, in NW 1/4 NE 1/4 NW 1/4 sec.05, T.13 S., R.13 E., Pima County, AZ, Hydrologic Unit 15050301, on left bank, 0.125 mi downstream from Ina Road, 0.25 mi upstream from Thornydale Rd., 1.5 mi upstream from mouth, and 7.3 mi north of Tucson.
DRAINAGE AREA - 255 mi².
PERIOD OF RECORD - May 1990 to Sept. 1995 (discharge above 200 ft³/s only), Oct. 1995 to current year.
GAGE - Water-stage recorder and crest-stage gages. Elevation of gage is 2,240 ft above sea level, from topographic map.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 9,870 ft³/s, Sept. 8, 2014, gage height, 11.96 ft (from floodmark); minimum, no flow for most days each year.