USGS Water-Year Summary 2021
08220000 RIO GRANDE NEAR DEL NORTE, CO
LOCATION - Lat 37°41'19.0", long 106°27'35.5" referenced to North American Datum of 1983, in NW 1/4 NW 1/4 sec.29, T.40 N., R.5 E., Rio Grande County, CO, Hydrologic Unit 13010001, on right bank 40 ft downstream from county highway bridge, 5.0 mi upstream from Pinos Creek, and 6.0 mi west of Del Norte.
DRAINAGE AREA - 1,320 mi². approximately.
- WSP 763: Drainage area. WSP 1312: 1889, 1901, 1913-14 (monthly discharge and runoff).
PERIOD OF RECORD - June 1889 to current year. Monthly discharge only for some periods, published in WSP 1312.
GAGE - Water-stage recorder with satellite telemetry. Datum of gage is 7,980.25 ft above NGVD of 1929. Prior to May 16, 1908, nonrecording gage at site 4 mi downstream at different datum. May 16, 1908 to Nov. 8, 1910, nonrecording gages on bridge at present site and datum.
COOPERATION - Records collected and computed by Colorado Division of Water Resources and reviewed by Geological Survey.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum stage of Oct. 5, 1911, is the greatest since at least 1873, from information obtained from local residents in 1959.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 18,000 ft³/s, Oct. 5, 1911, from rating curve extended above 12,900 ft³/s, gage height, 6.80 ft.