USGS Water-Year Summary 2023
06845110 SAPPA CREEK NEAR LYLE, KS
LOCATION - Lat 40°00'05.76", long 99°59'32.96" referenced to North American Datum of 1983, in 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.
REVISIONS HISTORY - Jan. 21-26, 29-31, and Feb. 1-3, 2023.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1995 to current year.
GAGE - Water-stage recorder. Datum of gage is 2225.715 ft. above NAVD88. Previous datum of gage was 2,223.14 ft above NGVD of 1929.
EXTREMES FOR PERIOD OF RECORD - A peak of 17.87 ft, gage datum occurred on May 24, 2008. The corresponding peak flow was 994 cfs