USGS Water-Year Summary 2019
09424900 SANTA MARIA RIVER NEAR BAGDAD, AZ
LOCATION - Lat 34°18'21", long 113°20'47" referenced to North American Datum of 1927, in SE 1/4 sec.12, T.11 N., R.11 W., Mohave County, AZ, Hydrologic Unit 15030203, on right bank 4.0 mi east of Palmerita Ranch, 12 mi upstream from confluence with Big Sandy River, and 21 mi southwest of Bagdad.
DRAINAGE AREA - 1,129 mi².
- WDR AZ-89-1: Drainage area.
PERIOD OF RECORD - Apr. 1966 to Sept. 1985, Oct. 1988 to current year.
GAGE - Water-stage recorder. Elevation of gage is 1,360 ft above sea level, from topographic map.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 24,600 ft³/s Mar. 1, 1978, gage height, 7.82 ft, from rating curve extended above 5,000 ft³/s on basis of step-backwater computations and slope-area measurements at gage heights 5.50 and 7.82 ft; no flow for many days in most years.