USGS Water-Year Summary 2019
02246000 NORTH FORK BLACK CREEK NEAR MIDDLEBURG, FL
LOCATION - Lat 30°06'47", long 81°54'24" referenced to North American Datum of 1927, in NE 1/4 sec.33, T.4 S., R.24 E., Clay County, FL, Hydrologic Unit 03080103, on left bank 0.3 mi upstream from Big Branch, 4 mi northwest of Middleburg, and 7.5 mi upstream from confluence with South Fork.
DRAINAGE AREA - 177 mi².
- WSP 852: 1933 (m). WDR FL-75-1: Drainage area.
PERIOD OF RECORD - October 1931 to current year.
GAGE - Water-stage recorder, acoustic velocity meter, and data-collection platform. Datum of gage is 1.02 ft above NGVD of 1929 (levels by St. Johns River Water Management District) and 0.05 ft below NAVD of 1988. Prior to Mar. 31, 1933, nonrecording gage at site 0.4 mi downstream at different datum. Mar. 31, 1933 to Apr. 28, 1955, nonrecording gage at present site and datum, 0.40 ft lower. Apr. 29, 1955 to Sept. 30, 2006, water-stage recorder at present site and datum 0.40 ft lower.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood in June 1919 reached a stage of 25.3 ft, from information by local resident, discharge 15,000 ft³/s.