08251500 RIO GRANDE NEAR LOBATOS, CO
LOCATION.--Lat 37°04'43", long 105°45'23", in NE14NW14 sec.27, T.33 N., R.11 E., Conejos County, Hydrologic Unit 13010002, on right bank at highway bridge, 5.7 mi north of Colorado-New Mexico State line, 8 mi downstream from Culebra Creek, 11 mi east of Lobatos, and 14 mi east of Antonito.
DRAINAGE AREA.--7,700 mi2, approximately, includes 2,940 mi2 in closed basin in northern part of San Luis Valley, CO.
PERIOD OF RECORD.--July 1899 to current year. Monthly discharge only for some periods, published in WSP 1312. Published as "at Cenicero" 1899-1901, and as "near Cenicero" 1902-4. Statistical summary computed for 1931 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=08251500
REVISED RECORDS.-- WSP 210: Drainage area. WSP 1312: 1919 (monthly discharge and runoff). WDR CO-78-1: 1976.
GAGE.--Water-stage recorder with satellite telemetry. Datum of gage is 7,427.63 ft above NGVD of 1929. Prior to Nov. 8, 1910, nonrecording gages at same site and datum.
REMARKS.--Records good except for estimated daily discharges, which are poor. Natural flow of stream affected by storage reservoirs, transmountain diversions, diversions for irrigation and municipal use, ground-water withdrawals, return flows from irrigated areas, and flows from sewage-treatment plants.
COOPERATION.--Records collected and computed by Colorado Division of Water Resources and reviewed by Geological Survey.
EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum stage of June 18, 1903, is greatest since at least 1828.
a Average discharge for 31 years (water years 1900-30), 846 ft3/s; 612,900 acre-ft/yr, includes period of extensive development for irrigation.
d Maximum discharge for period of record, 13,200 ft3/s, Jun 8, 1905, gage height, 9.1 ft, from rating curve extended above 8,000 ft3/s.