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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.
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USGS Water-Year Summary 2024
09047700 KEYSTONE GULCH NEAR DILLON, CO
LOCATION - Lat 39°35'40", long 105°58'19" referenced to North American Datum of 1927, in NE 1/4 NE 1/4 sec.26, T.5 S., R.77 W., Summit County, CO, Hydrologic Unit 14010002, on right bank 0.7 mi upstream from confluence with Snake River, about 1.2 mi southwest of Keystone, and 4.7 mi southeast of Dillon.
DRAINAGE AREA - 9.14 mi².
REVISIONS HISTORY - WDR-US-2011: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1957 to current year.
GAGE - Water-stage recorder with satellite telemetry and crest-stage gage. Elevation of gage is 9,350 ft above NGVD of 1929, from topographic map.
REMARKS - Water year 2014; records fair except for estimated daily discharges, which are poor. Water year 2015; records fair except for the period July 18 to Sept. 30, which is good, and estimated daily discharges, which are poor. Water year 2016; records good except for the period Nov. 5 to Apr. 8, which is fair, and estimated daily discharges, which are poor. Water year 2017; records fair except for the period June 10-12, and estimated daily discharges, which are poor. Water year 2018; records good except for the period Oct. 5 to May 16, which is fair, and estimated daily discharges, which are poor. Water year 2019; records good except for estimated daily discharges, which are poor. Water year 2020; records fair except for estimated daily discharges, which are poor. Water year 2021; records good except for estimated daily discharges, which are poor. Water year 2022; records good except for estimated daily discharges, which are poor. Water year 2023; records good except for estimated daily discharges, which are poor. No known diversion upstream from station.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 311 ft³/s, June 17, 1995, from rating curve extended above 65 ft³/s, gage height, 3.47 ft.
