USGS Water-Year Summary 2021
10254970 New River at International Boundary, at Calexico, CA
LOCATION - Lat 32°39'57", long 115°30'08" referenced to North American Datum of 1927, in SW 1/4 SE 1/4 sec.14, T.17 S., R.14 E., Imperial County, CA, Hydrologic Unit 18100204, on left bank, 200 ft downstream from bridge on Second Street, and 0.2 mi downstream from International Boundary in Calexico.
DRAINAGE AREA - Not applicable; flow principally is return flow from areas irrigated by Colorado River water diverted within Mexico.
PERIOD OF RECORD - October 1979 to current year. October 1945 to September 1979, in files of Imperial Irrigation District.
CHEMICAL DATA: Water years 1969-71, 1973-85.
BIOLOGICAL DATA: Water years 1973-81.
SPECIFIC CONDUCTANCE: Water years 1973-81.
WATER TEMPERATURE: Water years 1974-81.
SEDIMENT DATA: Water years 1975-85.
GAGE - Water-stage recorder. Elevation of gage is 30 ft below NGVD of 1929, from topographic map.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 1,240 ft³/s, Aug. 21, 2014, gage height, 16.34 ft; minimum daily, 43 ft³/s, Oct. 8, 2010.