07099400 ARKANSAS RIVER ABOVE PUEBLO, CO
LOCATION.--Lat 38°16'18", long 104°43'03", in NE14NE14 sec.36, T.20 S., R.66 W., Pueblo County, Hydrologic Unit 11020002, on left bank 200 ft downstream from northeast corner of Arkansas River bridge, 0.4 mi downstream from Pueblo Dam, and 7 mi west of Pueblo.
DRAINAGE AREA.--4,670 mi2.
PERIOD OF RECORD.--October 1965 to current year. Statistical summary computed for 1975 to current year subsequent to completion of Pueblo Reservoir. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=07099400
GAGE.--Water-stage recorder with satellite telemetry. Elevation of gage is 4,740 ft above NGVD of 1929, from topographic map. Prior to Mar. 23, 1967, at site 730 ft upstream at datum 2.23 ft higher. Mar. 24, 1967 to May 23 1974 at present site at datum 1.00 ft higher. May 24, 1974 to Feb. 24, 1975, at site 2,000 ft downstream, at different datum. Feb. 25, 1975 to Sept. 30, 2001, at or within 50 ft of present location at datum 1.00 ft higher.
REMARKS.--Records good except for estimated daily discharges, which are poor. Natural flow of stream affected by storage reservoirs, power developments, transbasin and transmountain diversions, diversions for irrigation and municipal use, ground-water withdrawals, return flows from irrigated areas, and flows from sewage-treatment plants. Flow completely regulated by Pueblo Reservoir (station 07099350) 0.4 mi upstream since Jan. 9, 1974.
COOPERATION.--Records collected and computed by Colorado Division of Water Resources and reviewed by Geological Survey.
a Average discharge for 8 years (water years 1966-73), 643 ft3/s; 465,900 acre-ft/yr, prior to completion of Pueblo Dam.
d Maximum discharge for period of record, 10,100 ft3/s, Aug 1, 1966, from rating curve extended above 1,600 ft3/s, on basis of slope-area measurement of peak flow.