LOCATION.--Lat 28°50'16", long 81°19'28", in SW1/4 sec.16, T.19 S., R.30 E., Seminole County, Hydrologic Unit 03080101, near center of channel on bridge pile under U.S. Highway 17 and 92, at outlet of Lake Monroe, 4 mi northwest of Sanford, and 161 mi upstream from mouth.
DRAINAGE AREA.--2,582 sq.mi.
PERIOD OF RECORD.--August 1941 to June 1956 (discharge measurements only), October 1964 to September 1968 (gage heights and miscellaneous discharge measurements only), May 1987 to September 1989, March 1995 to current year.
GAGE.--Water-stage recorder, acoustic velocity meter and data-collection platform. Datum of gage is .09 below NGVD of 1929.
EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum gage height since at least 1871, 13.37 ft in fall of 1880, from information by Fred T. Williams, former city engineer for Sanford. Since July 1941; Maximum daily gage height, 8.59 ft. Oct 5-17, 1953; minimum daily, -0.43 ft, Apr. 5, 1945 (published as elevation for Lake Monroe near Sanford).
