USGS Water-Year Summary 2020
02234324 HOWELL CREEK NEAR SLAVIA, FL
LOCATION - Lat 28°38'51", long 81°15'53" referenced to North American Datum of 1927, in SE 1/4 sec.24, T.21 S., R.30 E., Seminole County, FL, Hydrologic Unit 03080101, on upstream side of bridge on Red Bug Lake Road, 0.2 mi east of Tuskawilla Road, 2.1 mi west of Slavia, and 4.6 mi upstream from mouth.
DRAINAGE AREA - 29.2 mi².
PERIOD OF RECORD - February 1972 to September 1979, October 1980 to January 1981 (discharge measurements only), February 1981 to current year.
GAGE - Water-stage recorder and data-collection platform. Datum of gage is at NGVD of 1929 (Seminole County bench mark) and 1.02 ft below NAVD of 1988. Prior to Oct. 1, 1980, at same site and datum. Oct. 1, 1980 to Mar. 20, 1992, at site 150 ft upstream at same datum. Mar. 20, 1992 to June 12, 2003, at site 75 ft upstream at same datum.
COOPERATION - This gage is monitored in cooperation with the St. Johns River Water Management District.