USGS Water-Year Summary 2019
06845110 SAPPA CREEK NEAR LYLE, KS
LOCATION - Lat 40°00'06", long 99°59'33" referenced to North American Datum of 1927, in NE 1/4 NE 1/4 NW 1/4 sec.02, T.1 S., R.24 W., Norton County, KS, Hydrologic Unit 10250011, on right bank at upstream side of county highway bridge, 11.5 mi north and 5.5 mi west of Norton, on Kansas-Nebraska State line, and at mile 66.4.
DRAINAGE AREA - 1,488 mi².
PERIOD OF RECORD - October 1995 to current year.
GAGE - Water-stage recorder. Datum of gage is 2,223.14 ft above NGVD of 1929.