USGS Water-Year Summary 2023
263180080205001 SITE 7 IN CONSERVATION AREA NO. 1 NEAR SHAWANO, FL
LOCATION - Lat 26°31'21.17", long 80°20'09.97" referenced to North American Datum of 1983, in T.45 S., R.40 E., Palm Beach County, FL, Hydrologic Unit 03090202, in Loxahatchee Wildlife Refuge (Arthur R. Marshall Park). Township and range approximated from topographic map for which most section lines are not delineated, unable to determine section.
DRAINAGE AREA - Indeterminate.
PERIOD OF RECORD - July 1991 to current year.
GAGE - Satellite data collection platform with water-stage shaft encoder. Prior to October 1, 2003, a tipping bucket rain gage. Datum of gage is National Geodetic Vertical Datum (NGVD) of 1929 converted through VERTCON using the NAVD 88 survey levels from a benchmark provided by Florida Department of Environmental Protection (FDEP). The datum of the gage is 1.47 feet below North American Vertical Datum of 1988 (NAVD 88). The current datum of gage that started October 1, 2003, is at a datum 0.102 ft lower than previously published historic NGVD 1929 datum. Prior to October 1, 2003, datum of gage was historic NGVD 1929 (benchmark provided by U.S. Army Corps of Engineers (USACE)).
COOPERATION - U.S. Army Corps of Engineers.
EXTREMES FOR PERIOD OF RECORD - Maximum gage height, 18.12 ft Nov. 17, 18, 1994 (present datum); minimum, 14.19 ft June 12, 2011.
PERIOD OF RECORD - August 1992 to September 2003. Discontinued.