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USGS Water-Year Summary 2024
09072550 ROARING FORK RIVER ABOVE LOST MAN CREEK NEAR ASPEN, CO
LOCATION - Lat 39°07'09.7", long 106°37'26.1" referenced to North American Datum of 1983, Pitkin County, CO, Hydrologic Unit 14010004, at left wingwall of outlet culvert of Roaring Fork Diversion Dam, 0.25 mi upstream from Lost Man Creek, and 11.5 mi southeast of Aspen.
DRAINAGE AREA - 9.03 mi².
REVISIONS HISTORY - WDR-US-2011: Drainage area. WDR-US-2012: 2009-11 (M).
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1980 to September 1986 and June 2009 to current year (seasonal records only). Intermittent discharge records and miscellaneous discharge measurements collected by the U.S. Bureau of Reclamation from October 1986 to October 2008.
GAGE - Water-stage recorder with satellite telemetry and 90-degree V-notch weir. Datum of gage is 10,550.19 ft above NAVD of 1988, from GNSS survey. Prior to Aug. 11, 2021, the elevation of gage was reported as 10,520 ft above NGVD of 1929, from topographic map. Prior to June 17, 2008 at site 500 ft downstream, at different datum.
REMARKS - Water year 2014; records good except for flows below 0.05 ft³/s, and estimated daily discharges, which are poor. Water year 2015; no estimated daily discharges. Records good except for flows below 0.05 ft³/s, which are poor. Station discharges indeterminate for the periods June 3 to Aug. 3, and Aug. 8 to Sept. 30. Water year 2016; records good except for flows below 0.05 ft³/s, and estimated daily discharges, which are poor. Station discharges indeterminate for the periods Oct. 1-20, and June 14-29. Water year 2017; records good except for flows below 0.05 ft³/s, and estimated daily discharges, which are poor. Station discharges indeterminate for the period June 13 to July 1. Water year 2018; records good except for flows below 0.05 ft³/s, and estimated daily discharges, which are poor. Water year 2019; no estimated daily discharges. Records good except for flows below 0.05 ft³/s, which are poor. Station discharges indeterminate for the periods May 8-9, July 4 to Aug. 21, and Sept. 11. Water year 2020; records good except for flows below 0.05 ft³/s, and estimated daily discharges, which are poor. Station discharges indeterminate for the period Sept. 11-30. Water year 2021; no estimated daily discharges. Records good. Station discharges indeterminate for the periods May 1 to June 1, and July 27 to Sept. 30. Water year 2022; no estimated daily discharges. Records good. Station discharges indeterminate for the periods May 1 to June 10, and Aug. 10 to Sept. 30. Water year 2023; no estimated daily discharges. Records good. Station discharges indeterminate for the periods May 1 to July 10, and Sept. 21-30. Water year 2024; no estimated daily discharges. Records
good. Station discharges
indeterminate for the periods May 1 to June 18, and July 2-Sept. 30. Daily
values are not published for days when the weir is not in place. Transmountain diversion upstream through Twin Lakes Tunnel to Arkansas River Basin since May 24, 1935. Diversions from Lost Man Creek via canal into Roaring Fork River immediately upstream of Roaring Fork Diversion Dam. Roaring Fork Diversion Dam also diverts some of the Roaring Fork River, via tunnel, to Grizzly Reservoir on Lincoln Creek. Flow completely regulated by Roaring Fork Diversion Dam.
EXTREMES FOR PERIOD OF RECORD - Maximum daily discharge, 442 ft³/s, June 10, 1985.
