USGS Water-Year Summary for Site 07134180

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	00060 Discharge(Mean)

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

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.

REVISIONS HISTORY - WDR-US-2011: Drainage area.

SURFACE-WATER RECORDS

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.

REMARKS - Water year 2014; records fair except for estimated daily discharges, which are poor. Water year 2015; records fair except for the period Oct. 1 to Apr. 21, and estimated daily discharges, which are poor. Water year 2016; no estimated daily discharges. Records fair. Water year 2017; records fair except for estimated daily discharges, which are poor. Water year 2018; records fair except for flows above 900 ft³/s, and estimated daily discharges, which are poor. Water year 2019; no estimated daily discharges. Records fair except for flows above 900 ft³/s, which are poor. Water year 2020; no estimated daily discharges. Records fair except for flows above 900 ft³/s, which are poor. Water year 2021; records fair except for flows above 500 ft³/s, and estimated daily discharges, which are poor. Water year 2022; records fair except for flows above 500 ft³/s, and estimated daily discharges, which are poor. Water year 2023; records fair except for flows above 1000 ft³/s, and estimated daily discharges, which are poor. Natural flow of stream affected by storage reservoirs, power developments, transbasin and transmountain diversions, diversions for irrigation and municipal use, groundwater withdrawals, return flows from irrigated areas, and flows from sewage-treatment plants. Flow regulated by John Martin Reservoir (station 07130000) 38 mi upstream since Oct. 1948.

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.