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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
09021000 WILLOW CREEK BELOW WILLOW CREEK RESERVOIR, CO.
LOCATION - Lat 40°08'45", long 105°56'22" referenced to North American Datum of 1927, Grand County, CO, Hydrologic Unit 14010001, on left bank 788 ft ds of outlet to Willow Creek Reservoir, 0.3 miles east of County Road 40, 2.8 mi north of Highway 34, and 4.2 mi north of Granby.
DRAINAGE AREA - 134 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - August 1953 to September 1982, March 2018 to current year. Provisional data available upon request from Colorado Division of Water Resources for the years not published by the Geological Survey (Reference: WILWCRCO).
GAGE - Water-stage recorder with satellite telemetry and crest-stage gage. Datum of gage is 8,030.04 ft above NAVD of 1988, from GNSS survey. Prior to Aug. 18, 2022, elevation of gage was reported as 8,023.64 ft above NGVD of 1929 (levels by U.S. Bureau of Reclamation).
REMARKS - Water year 2018; records good except for estimated daily discharges, which are poor. Water year 2019; no estimated daily discharges. Records good. Water year 2020; no estimated daily discharges. Records good. Water year 2021; no estimated daily discharges. Records good. Water year 2022; no estimated daily discharges. Records good. Water year 2023; no estimated daily discharges. Records good. Water year 2024; no estimated daily discharge. Records good. Natural flow of stream affected by transmountain diversions, storage reservoirs, and diversions for irrigation.
