LOCATION.--Lat 37°30'55", long 103°43'30", Las Animas County, Hydrologic Unit 11020010, on left bank 200 ft downstream from Welsh Canyon Creek, 0.3 mi upstream from mouth, and 21 mi east of Thatcher.
DRAINAGE AREA.--48.9 mi2 (revised).
WATER-DISCHARGE RECORDS
PERIOD OF RECORD.--May 1983 to September 1990, October 1990 to April 2000 (annual maximum only), April 2000 to current year (seasonal records only). For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=07126415
GAGE.--Water-stage recorder with satellite telemetry and crest-stage gages. Elevation of gage is 4,510 ft above NGVD of 1929, from topographic map.
REMARKS.--Records fair except for estimated daily discharges, which are poor. Natural flow of stream affected by erosion-control and
livestock-watering reservoirs.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 3,430 ft3/s, June 13, 2002, from slope-area measurement of peak flow, gage height,
11.46 ft, from floodmarks; no flow on many days most years.
EXTREMES FOR CURRENT YEAR (seasonal only).---Maximum discharge, 555 ft3/s, May 30, (gage height 7.90 ft, from floodmarks) from rating curve extended above 292 ft3/s on basis of step-backwater analysis and slope-area measurements of peak flow at gage heights, 7.54 ft, 8.40 ft, and 11.46 ft;
no flow on most days.
Discharge, cubic feet per second
WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
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