USGS Water-Year Summary 2018
06111800 Big Spring Creek at Reed and Bowles Trading Post nr Lewistown MT
LOCATION - Lat 47°05'16.2", long 109°27'27.0" referenced to North American Datum of 1983, in SW 1/4 SW 1/4 sec.04, T.15 N., R.18 E., Fergus County, MT, Hydrologic Unit 10040103, in NE 1/4 SW 1/4 SW1/4 sec.4, T.15 N., R.18 E., on right bank at fishing access bridge, entrance to Reed and Bowles Trading Post, 2.2 mi northwest of Lewistown, and at river mile 15.0.
DRAINAGE AREA - 191 mi². Revised.
PERIOD OF RECORD - October 1, 2014 to September 12, 2017.
GAGE - Water-stage recorder. Elevation of gage is 3,835 ft above sea level (NGVD 29), from topographic map