USGS Water-Year Summary 2024
07189710 Horse Creek at 540 Rd near Afton, OK
LOCATION - Lat 36°40'39.87", long 94°54'33.17" referenced to North American Datum of 1983, in SW 1/4 NW 1/4 sec.01, T.25 N., R.22 E., Ottawa County, OK, Hydrologic Unit 11070206,
DRAINAGE AREA - 43.99 mi². From automated delineation using 10-meter National Elevation Dataset digital elevation model data dated 10/01/2006 and Watershed Boundary Datatset dated 10/01/2006, using Albers Equal-Area Projection, North American Datum 1983.
SURFACE-WATER RECORDS
PERIOD OF RECORD - August 2020 to current year.
GAGE - Water-stage recorder. Datum of gage is 743.42 above NAVD 88. Datum determined by a GNSS Level III survey (REF FRAME: NAD_83(2011)(EPOCH:2010.0000) ITRF2014 (EPOCH:2021.4376)[NAVD88 (Computed using GEOID18)]) and tied to locally set GNSS hub.