PROVISIONAL DATA SUBJECT TO REVISION

LOCATION.--Lat 30°22'59", long 84°39'18" referenced to North American Datum of 1927, NE 1/4 sec.20, T.1S., R.4W., Leon County, FL, Hydrologic Unit 03120003, on left bank at Old State Highway 20 (Crooked Road), 3,000 ft downstream from C.H. Corn Hydroelectric Dam, 1.5 mi southwest of Bloxham, and 65 mi upstream from mouth.

DRAINAGE AREA.--1700 mi².

PERIOD OF RECORD.--June 1926 to current year. Low-Flow records not equivalent prior to Oct. 1, 1954, due to undetermined amount of seepage inflow.

GAGE.--Water-stage recorder. Datum of gage is 24.46 ft above NGVD of 1929. Prior to Apr. 9, 1930 nonrecording gage at site 2,700 ft upstream at datum 5.23 ft higher, Apr. 9, 1930 to Jan. 19, 1939, water-stage recorder at site 2,000 ft upstream at datum 5.23 ft higher. Jan. 20, 1939 to Sept. 30, 1954, water-stage recorder at present site at datum 5.23 ft higher, Oct. 1, 1954 to Sept. 30, 1985, water-stage recorder at present site at datum 0.23 ft higher, Oct. 1, 1985 to Aug. 27, 1997, at site 2,000 ft upstream at datum 0.23 ft higher.

REMARKS.--Records fair above 150 ft³/s and poor below 150 ft³/s due to the regularly shifting nature of the channel. Flow regulated since 1929 by C.H. Corn Hydroelectric Dam (formerly Jackson Bluff Dam) above station and storage in Lake Talquin (02329900). Since October 1981, the publication of adjusted values for storage has been discontinued since the difference between adjusted and the unadjusted values have been minimal. Maximum discharge, 89,400 ft³/s, Sept. 23, 1969, gage height, 29.2 ft from floodmark; minimum discharge, since October 1954, 1.0 ft³/s, Nov. 1, 1957, caused by closure of breaks in earth embankment of C.H. Corn Hydroelectric Dam (indeterminate prior to October 1954).