USGS Water-Year Summary 2020
09475500 FLORENCE-CASA GRANDE CANAL, NEAR FLORENCE, AZ
LOCATION - Lat 33°05'15", long 111°17'10" referenced to North American Datum of 1927, in NE 1/4 NE 1/4 sec.14, T.4 S., R.10 E., Pinal County, AZ, Hydrologic Unit 15050100, on left bank at China Wash, 2.6 mi downstream from head at Ashurst-Hayden Dam and 7.5 mi northeast of Florence.
PERIOD OF RECORD - Jan. 1928 to current (1928-2005, monthly diversions only). Published as a supplement to records for Gila River at Ashurst-Hayden Dam, 1928-80. Published as continuous record 2006 to current year.
GAGE - Water-stage recorder and Parshall flume. Prior to Jan. 12, 1937, water-stage recorder 900 ft downstream from Ashurst-Hayden Dam.
COOPERATION - San Carlos Irrigation District.