USGS Water-Year Summary 2021
09512800 AGUA FRIA RIVER NEAR ROCK SPRINGS, AZ
LOCATION - Lat 34°00'56", long 112°10'02" referenced to North American Datum of 1927, in NW 1/4 NW 1/4 sec.28, T.8 N., R.2 E., Yavapai County, AZ, Hydrologic Unit 15070102, on right bank 2.5 mi southwest of Rock Springs and 10 mi upstream from Lake Pleasant.
DRAINAGE AREA - 1,111 mi².
- WDR AZ-89-1: Drainage area.
PERIOD OF RECORD - Jan. 1970 to current year (monthly discharge only, Oct.1973 to Sept. 1974). Low-flow records not equivalent prior to Oct. 1, 1974, due to spring flow in streambed between sites in use.
GAGE - Water-stage recorder and crest-stage gage. Elevation of gage is 1,800 ft above sea level, from topographic map. Prior to Oct. 1, 1974, at site 600 ft upstream at datum 10.00 ft higher.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 59,500 ft³/s Feb. 19,
1980, gage height, 21.08 ft recorded, 28.15 ft from a floodmark, from rating
curve extended above 21,000 ft³/s on basis of slope-area measurement at
gage height 27.2 ft; no flow at times most years.