USGS Water-Year Summary for Site 09147000

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	Available Parameters
	00045 Precipitation(Sum)
	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

09147000 DALLAS CREEK NEAR RIDGWAY, CO

LOCATION - Lat 38°10'40", long 107°45'28" referenced to North American Datum of 1927, in sec.04, T.45 N., R.8 W., Ouray County, CO, Hydrologic Unit 14020006, on right bank 20 ft downstream from county road bridge, 1.5 mi upstream from mouth, and 1.5 mi northwest of Ridgway.

DRAINAGE AREA - 97.2 mi².

REVISIONS HISTORY - WSP 1924: 1960. WDR CO-88-2: Drainage area.

SURFACE-WATER RECORDS

PERIOD OF RECORD - March 1922 to October 1927, October 1955 to September 1971, October 1979 to current year.

GAGE - Water stage recorder with satellite telemetry and crest-stage gage. Elevation of gage is 6,980 ft above NGVD of 1929, from topographic map. Mar. 1, 1922 to Oct. 31, 1927, nonrecording gage at different datum.

REMARKS - Water year 2014; records good except for the period Feb. 11 to Apr. 22, which is fair, and estimated daily discharges, which are poor. Water year 2015; records fair except for estimated daily discharges, which are poor. Water year 2016; records fair except for flows above 170 ft³/s, and estimated daily discharges, which are poor. Water year 2017; records fair except for flows above 170 ft³/s, and estimated daily discharges, which are poor. Water year 2018; records fair except for flows above 170 ft³/s, and estimated daily discharges, which are poor. Water year 2019; records fair except for flows above 170 ft³/s, and estimated daily discharges, which are poor. Water year 2020; records fair except for flows above 170 ft³/s, and estimated daily discharges, which are poor. Water year 2021; records fair except for flows above 170 ft³/s, and estimated daily discharges, which are poor. Water year 2022; records fair except for flows above 170 ft³/s, and estimated daily discharges, which are poor. Water year 2023; records fair except for flows above 170 ft³/s, and estimated daily discharges, which are poor. Diversions upstream from station for irrigation of about 4,500 acres upstream from and 700 acres downstream from station. One small ditch imports water from Leopard Creek (Dolores River Basin) to drainage upstream from station.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 3,960 ft³/s, July 31, 1999, on basis of slope-area measurement of peak flow, gage height, 8.42 ft, from high-water mark.

CLIMATOLOGICAL RECORDS

PERIOD OF RECORD - May 2005 to September 2015. September 2018 to current year (seasonal records only).

INSTRUMENTATION - Tipping-bucket rain gage with satellite telemetry. Elevation of gage is 6,980 ft above NGVD of 1929, from topographic map.

EXTREMES FOR PERIOD OF RECORD - (seasonal only) Maximum daily precipitation, 1.65 inches, July 17, 2020.

REMARKS - Gage operated seasonally, April through October. Unless otherwise noted, records are not rated, and periods of record are not estimated.