USGS Water-Year Summary 2020
09397000 LITTLE COLORADO RIVER AT HOLBROOK, AZ
LOCATION - Lat 34°53'52", long 110°09'45" referenced to North American Datum of 1927, Apache County, AZ, Hydrologic Unit 15020008, on east side of Hwy. 77 bridge, and 2 miles below mouth of Puerco River.
DRAINAGE AREA - 11,462 mi² of which 347 mi² probably is noncontributing.
PERIOD OF RECORD - Nov. 2003 to current year. Records for Mar. to Nov. 1905, Dec. 1905 to Aug. 1906 (monthly discharge only), Sept. 1906 to Apr. 1907, May 1907 to Dec. 1909 (gage heights only), Sept. 1949 to Sept. 1973 at site 1/8 mile downstream.
GAGE - Water-stage recorder. Datum of gage is 5,062.87 ft above sea level. Mar. 1905 to Dec. 1909, non-recording gage.
EXTREMES OUTSIDE PERIOD OF RECORD - Peak discharge of flood of Sept. 19, 1923, was computed as 60,000 ft³/s, from cross section and slope of water surface by Corps of Engineers, whose studies indicate that this was probably the greatest flood since 1870.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 24,200 ft³/s Oct. 4, 1968, gage height, 12.55 ft.; maximum gage height, 15.20 ft. Oct. 20, 1972; no flow at times.