USGS Water-Year Summary 2021
02233484 ECONLOCKHATCHEE RIVER NEAR OVIEDO, FL
LOCATION - Lat 28°39'19", long 81°10'12" referenced to North American Datum of 1927, in NE 1/4 sec.24, T.21 S., R.31 E., Seminole County, FL, Hydrologic Unit 03080101, on downstream side of westbound bridge on State Highway 419, 0.1 mi downstream from Little Econlockhatchee River, 2.5 mi east of Oviedo, and 16.3 mi upstream from mouth.
DRAINAGE AREA - 228 mi².
PERIOD OF RECORD - Water years 1935, 1981, 2001 (miscellaneous discharge measurements), December 2001 to current year.
GAGE - Water-stage recorder and data-collection platform. Datum of gage is at NGVD of 1929 (Seminole County bench mark) and 1.05 ft below NAVD of 1988.
COOPERATION - This gage is monitored in cooperation with the St. Johns River Water Management District.