USGS Water-Year Summary 2020
07134180 ARKANSAS RIVER NEAR GRANADA, CO
LOCATION - Lat 38°05'44", long 102°18'37" referenced to North American Datum of 1927, in SE 1/4 NE 1/4 sec.36, T.22 S., R.44 W., Prowers County, CO, Hydrologic Unit 11020009, near mid-stream on upstream side of bridge on U.S. Highway 385, 1.2 mi downstream from headgate of Buffalo Canal, and 2.3 mi north of Granada.
DRAINAGE AREA - 23,500 mi² of which 1,648 mi² probably is noncontributing.
- WDR-US-2011: Drainage area.
PERIOD OF RECORD - January 1899 to December 1901 (gage heights only), August to October 1903 (monthly discharge only for some periods, published in WSP 1311), December 1980 to current year.
GAGE - Water-stage recorder with satellite telemetry and crest-stage gage. Elevation of gage is 3,480 ft above NGVD of 1929, from topographic map. See WSP 1311 for history of changes prior to Dec. 5, 1980. Dec, 5, 1980 to July 11, 2004, at site on left bank at same datum. July 12, 2004 to Mar. 17, 2009, at site on right bank at same datum.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 4,610 ft³/s, May 5, 1999, from rating curve extended above 3,470 ft³/s, gage height, 12.28 ft.