USGS Water-Year Summary for Site 07126485

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	Available Parameters
	00010 Temperature, water(Max.,Min.,Mean)
	00045 Precipitation(Sum)
	00060 Discharge(Mean)
	00095 Specific cond at 25C(Mean,Max.,Min.)
	63680 Turbidity, Form Neph(Min.,Med.,Max.)

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

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USGS Water-Year Summary 2023

07126485 PURGATOIRE RIVER AT ROCK CROSSING NEAR TIMPAS, CO

LOCATION - Lat 37°37'06", long 103°35'35" referenced to North American Datum of 1927, in NE 1/4 SE 1/4 sec.10, T.28 S., R.55 W., Las Animas County, CO, Hydrologic Unit 11020010, on left bank at Rock Crossing, 1.4 mi upstream from Minnie Canyon, 2.2 mi downstream from Beaty Canyon, and 17 mi southeast of Timpas.

DRAINAGE AREA - 2,758 mi² of which 11.8 mi² probably is noncontributing.

REVISIONS HISTORY - WDR CO-87-1: 1984-86 (M). WDR-US-2011: Drainage area.

SURFACE-WATER RECORDS

PERIOD OF RECORD - June 1983 to September 2004, October 2004 to current year (seasonal records only).

GAGE - Water-stage recorder with satellite telemetry and crest-stage gage. Elevation of gage is 4,350 ft above NGVD of 1929, from topographic map. June 1, 1983 to July 17, 1985, at site 500 ft downstream at same datum.

REMARKS - Water year 2014; records poor. Water year 2015; no estimated daily discharges. Records fair except for the period Apr. 10-29, and flows above 725 ft³/s, which are poor. Water year 2016; no estimated daily discharges. Records fair except for flows above 725 ft³/s, which are poor. Water year 2017; no estimated daily discharges. Records good except for the period Sept. 13-30, which is fair, and flows above 2,230 ft³/s, which are poor. Water year 2018; no estimated daily discharges. Records good except for flows above 2,230 ft³/s, which are poor. Water year 2019; records good except for estimated daily discharges, which are poor. Water year 2020; records fair except for estimated daily discharges, which are poor. Water year 2021; records poor. Water year 2022; records poor. Water year 2023; records poor. Natural flow of stream affected by storage reservoirs, diversions for irrigation and municipal use, groundwater withdrawals, return flows from irrigated areas, and flows from sewage-treatment plants. Peak flows are regulated to some extent by Trinidad Lake (station 07124400) 92 mi upstream.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 11,400 ft³/s, July 9, 1992, from slope-area measurement of peak flow, gage height, 17.90 ft, from floodmarks.

CLIMATOLOGICAL RECORDS

PERIOD OF RECORD - April 1999 to September 2004 (seasonal only), October 2021 to current year.

INSTRUMENTATION - Weighing-plate rain gage with satellite telemetry. Prior to August 2021, tipping-bucket rain gage at site.

EXTREMES FOR PERIOD OF RECORD - (seasonal only) Maximum daily precipitation, 2.11 inches, Oct. 4, 2000.

REMARKS - Records are not rated, and periods of missing record are not estimated. Water year 2022; no data available due to a communication issue between the deployed gage and the data that was being received by the data collection platform.