USGS Water-Year Summary 2021
08359500 RIO GRANDE AT NARROWS IN ELEPHANT BUTTE RES., NM
LOCATION - Lat 33°23'10", long 107°09'45" referenced to North American Datum of 1927, Sierra County, NM, Hydrologic Unit 13020211, on right bank 19 miles northeast of Truth or Consequences (formerly Hot Springs), Sierra County.
DRAINAGE AREA - 28,500 mi². (approximate and includes 2,940 mi² in closed basin in San Luis Valley, Colo.)
PERIOD OF RECORD - May 2012 to current year. Published as Rio Grande at the narrows, in Elephant Butte Reservoir, May 1951 to Sept. 1957.
GAGE - Water-stage recorder with satellite telemetry and crest-stage gage. Datum of gage is 4,387.371 ft above NGVD 1929. Prior to May 21, 2012, at site 300 ft upstream at datum 23.741 ft lower. Prior to Aug. 25, 1953, at site 600 ft upstream at datum 10.041 ft lower.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum flood known occurred in October 1904 (discharge, about 50,000 ft³s).