USGS Water-Year Summary 2019
07116500 HUERFANO RIVER NEAR BOONE, CO
LOCATION - Lat 38°13'30", long 104°15'37" referenced to North American Datum of 1927, in NE 1/4 NE 1/4 sec.18, T.21 S., R.61 W., Pueblo County, CO, Hydrologic Unit 11020006, near middle of span on upstream side of bridge on U.S. Highway 50, 0.8 mi upstream from mouth, and 1.6 mi south of Boone.
DRAINAGE AREA - 1,859 mi².
- WDR-US-2011: Drainage area.
PERIOD OF RECORD - January 1922 to September 1925 (monthly and annual discharge only, published in WSP 1311 as "near Nepesta"), October 1979 to current year.
GAGE - Water-stage recorder with satellite telemetry and crest-stage gage. Datum of gage is 4,443.74 ft above NGVD of 1929. Jan. 1922 to Sept. 1925, at site on right bank at different datum. Oct. 1979 to Feb. 2011, at site on right bank at same datum.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 8,030 ft³/s, Aug. 12, 1981, from rating curve extended above 1,130 ft³/s, gage height, 10.90 ft, from floodmarks. No flow on many days during most years.