USGS Water-Year Summary 2024
06186500 YELLOWSTONE RIVER AT YELLOWSTONE LAKE OUTLET, YELLOWSTONE NATIONAL PARK
LOCATION - Lat 44°34'01.53", long 110°22'49.46" referenced to North American Datum of 1983, Teton County, WY, Hydrologic Unit 10070001, Yellowstone National Park, on left bank 450 ft downstream from Fishing Bridge, 0.3 mi downstream from outlet of Yellowstone Lake, and at river mile 616.4.
DRAINAGE AREA - 995 mi².
REVISIONS HISTORY - WSP 1309: See PERIOD OF RECORD. WSP 1729: Drainage area. Water Data Report MT-03-1: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1927 to September 1982, October 1983 to September 1986, October 1988 to current year. Prior to October 1927, gage heights only. Monthly discharge only for winter periods in water years 1927-30, 1932-33, 1935-38, 1940, 1942-46 are published in Water Supply Paper (WSP) 1309; figures of daily discharge for these months published in WSP 646, 666, 686, 701, 731, 746, 786, 806, 826, 856, 896, 956, 976, 1006, 1036, and 1056 have been found to be unreliable and should not be used.
GAGE - Water-stage recorder. U.S. Geological Survey satellite telemeter is located at the station. Elevation of gage is 7,729.58 ft, referenced to the National Geodetic Vertical Datum of 1929. Prior to Oct. 2, 1928, nonrecording gage at site 450 ft upstream at elevation 1.07 ft higher.