USGS Water-Year Summary 2023
14036860 JOHN DAY RIVER AT BLUE MOUNTAIN HOT SPRINGS, NEAR PRAIRIE CITY, OR
LOCATION - Lat 44°21'29", long 118°34'30" referenced to North American Datum of 1927, in SE 1/4 NW 1/4 sec.13, T.14 S., R.34 E., Grant County, OR, Hydrologic Unit 17070201, on right bank, 0.25 mi downstream from Blue Mountain Hot Springs, 0.6 mi downstream from Rail Creek, 8 mi southeast of Prairie City and at mile 275.3.
DRAINAGE AREA - 40.14 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1996 to September 2000, October 2002 to September 2013, October 2013 to current year (seasonal records only).
GAGE - Water-stage recorder and crest-stage gage. Elevation of gage is 4,200 ft above NGVD of 1929, from topographic map.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 950 ft³/s May 25, 1998, gage height, 3.90 ft, from rating curve extended above 300 ft³/s; minimum discharge, 21 ft³/s Aug. 26, 27, 2015.