USGS Water-Year Summary for Site 08246500

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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

08246500 CONEJOS RIVER NEAR MOGOTE, CO

LOCATION - Lat 37°03'14", long 106°11'13" referenced to North American Datum of 1927, in SE 1/4 SE 1/4 sec.34, T.33 N., R.7 E., Conejos County, CO, Hydrologic Unit 13010005, on left bank 75 ft downstream from bridge on State Highway 174, 0.4 mi downstream from Fox Creek, 5.3 mi west of Mogote, and 10 mi west of Antonito.

DRAINAGE AREA - 282 mi².

REVISIONS HISTORY - WSP 898: 1911 (M). WSP 1312: 1903-5 (monthly discharge and runoff).

SURFACE-WATER RECORDS

PERIOD OF RECORD - April 1903 to October 1905, October 1911 to current year. Monthly discharge only for some periods, published in WSP 1312. Records for March 1900 at site 5.5 mi upstream and May 1905 to September 1911 (some missing periods most years) at site 3.2 mi upstream not equivalent to present site due to inflow.

GAGE - Water-stage recorder with satellite telemetry. Datum of gage is 8,269.39 ft above NGVD of 1929, Colorado State Highway datum. Apr. 17, 1903 to Oct. 31, 1905, nonrecording gage 400 ft downstream at different datum. Oct. 5, 1911 to early 1915, nonrecording gage, and from early 1915 to Oct. 1, 1988, water-stage recorder at site 100 ft upstream at datum 2.15 ft higher.

COOPERATION - Records collected and computed by Colorado Division of Water Resources and reviewed by Geological Survey.

REMARKS - Water year 2014; records good except for estimated daily discharges, which are poor. Water year 2015; records good except for estimated daily discharges, which are poor. Water year 2016; records good except for estimated daily discharges, which are poor. Water year 2017; records good except for estimated daily discharges, which are poor. Water year 2018; records good except for estimated daily discharges, which are poor. Water year 2019; records good except for estimated daily discharges, which are poor. Water year 2020; records good except for estimated daily discharges, which are poor. Water year 2021; records good except for estimated daily discharges, which are poor. Water year 2022; records good except for estimated daily discharges, which are poor. Water year 2023; records good except for estimated daily discharges, which are poor. Natural flow of stream affected by diversions for irrigation and return flows from irrigated areas. Some regulation by Platoro Reservoir (station 08244500) about 59 mi upstream since Nov. 7, 1951.

EXTREMES OUTSIDE PERIOD OF RECORD - Maximum stage of Oct. 5, 1911, is the greatest since at least 1854, from information obtained from local residents in 1959.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 9,000 ft³/s, Oct. 5, 1911, from rating curve extended above 3,100 ft³/s, gage height, 8.50 ft, from floodmarks.