USGS Water-Year Summary 2021
08382500 GALLINAS RIVER NEAR COLONIAS, NM
LOCATION - Lat 35°10'55.06", long 104°54'00.96" referenced to North American Datum of 1983, Guadalupe County, NM, Hydrologic Unit 13060001, in Anton Chico Grant and Preston Beck Grant, on right bank 2.3 mi south of San Miguel-Guadalupe County line, 2.4 mi upstream from mouth, 5.8 mi northwest of Colonias, and 9.0 mi east of Dilia. Mouth at Pecos River mile 789.2.
DRAINAGE AREA - 610 mi². (approximately)
PERIOD OF RECORD - January 1951 to current year.
GAGE - Water-stage recorder with satellite telemetry and crest-stage gage. Elevation of gage is 4,940 ft above NGVD of 1929, from topographic map.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of about June 1, 1937, reached a stage of about 27.2 ft; discharge determined as 26,700 ft³/s by slope-area measurement made in 1951. A flood of about the same magnitude occurred Sept. 29 and 30, 1904.