USGS Water-Year Summary for Site 09359010

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	Available Parameters
	00010 Temperature, water(Max.,Min.,Mean)
	00060 Discharge(Mean)
	00095 Specific cond at 25C(Max.,Min.,Mean)
	00400 pH(Max.,Min.,Med.)
	63680 Turbidity, Form Neph(Max.,Med.,Min.)

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

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USGS Water-Year Summary 2023

09359010 MINERAL CREEK AT SILVERTON, CO

LOCATION - Lat 37°48'10", long 107°40'20" referenced to North American Datum of 1927, in NW 1/4 NE 1/4 sec.19, T.41 N., R.7 W., San Juan County, CO, Hydrologic Unit 14080104, on right bank at southwest end of Greene Street at abandoned bridge crossing Mineral Creek, 300 ft. downstream from U. S. Highway 550 crossing Mineral Creek, 1,400 ft. upstream from mouth, and 0.5 mi southwest of Silverton.

DRAINAGE AREA - 52.3 mi².

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

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 1991 to September 1993, October 1994 to current year.

GAGE - Water-stage recorder with satellite telemetry and crest-stage gage. Datum of gage is 9,245.98 ft above NGVD of 1929, from San Juan County bench mark.

REMARKS - Water year 2014; records fair except for 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 estimated daily discharges, which are poor. Water year 2017; records poor. Water year 2018; records fair except for estimated daily discharges, which are poor. Water year 2019; records fair except for flows above 370 ft³/s, and estimated daily discharges, which are poor. Water year 2020; records fair except for estimated daily discharges, which are poor. Water year 2021; records fair except for estimated daily discharges, which are poor. Water year 2022; records fair except for estimated daily discharges, which are poor. Water year 2023; records fair except for flows above 200 ft³/s, and estimated daily discharges, which are poor. Natural regulation by many lakes upstream from station. Diversions upstream from Mineral Creek drainage to Uncompahgre River drainage consists of 100 to 200 acre-ft per year through Red Mountain Ditch. City of Silverton diverts some water from Bear Creek (tributary) for municipal use.

EXTREMES OUTSIDE PERIOD OF RECORD - Maximum flood known occurred Oct. 5, 1911. An indirect determination of peak flow for flood of Sept. 5, 1970, was run in very close proximity to present site, discharge, 3,070 ft³/s, gage height not determined.