USGS Water-Year Summary 2020
06730200 BOULDER CREEK AT NORTH 75TH STREET NEAR BOULDER, CO
LOCATION - Lat 40°03'06", long 105°10'42" referenced to North American Datum of 1927, in SE 1/4 NW 1/4 sec.13, T.1 N., R.70 W., Boulder County, CO, Hydrologic Unit 10190005, on left bank 30 ft upstream from bridge on North 75th Street, 0.2 mi downstream from Boulder feeder ditch, and 6 mi northeast of Boulder.
DRAINAGE AREA - 307 mi².
- WDR-US-2011: Drainage area.
PERIOD OF RECORD - October 1986 to current year.
GAGE - Water-stage recorder with satellite telemetry, crest-stage gage, and grouted rock control. Elevation of gage is 5,106 ft above NGVD of 1929, from topographic map. From Apr. 14, 2003 to Apr. 6, 2006, at site 100 ft downstream at same datum.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 8,400 ft³/s, Sept. 13, 2013, from indirect measurement of peak flow, gage height, 10.60 ft, from high-water mark.