USGS Water-Year Summary 2020
02304500 HILLSBOROUGH RIVER NEAR TAMPA, FL.
LOCATION - Lat 28°01'25", long 82°25'40" referenced to North American Datum of 1927, in NW 1/4 sec.29, T.28 S., R.19 E., Hillsborough County, FL, Hydrologic Unit 03100205, on left bank at upstream side of control structure for Tampa Reservoir, at 30th Street, 5.4 mi northeast of Tampa, and 10 mi upstream from mouth.
DRAINAGE AREA - 624 mi².
- WSP 1234: Drainage area. WDR-US-2006:Drainage area. WDR-US-2006, daily and monthly totals.
PERIOD OF RECORD - October 1938 to current year.
GAGE - Water-stage recorder. Datum of gage is National Geodetic Vertical Datum of 1929. Prior to Oct. 1, 1945, at site 2.1 mi upstream at datum 0.66 ft higher.
COOPERATION - This gage is monitored in cooperation with the City of Tampa.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum stage known, 25.6 ft, Sept. 7, 1933, at former site and datum, from floodmarks, affected by backwater prior to failure of Tampa power dam, 2.1 mi below former gage. A discharge of 16,500 ft³/s, was measured Sept. 9, 1933.
PERIOD OF RECORD - October 2001 to current year.
INSTRUMENTATION - A 8-inch diameter, tipping bucket precipitation gage 15--minute-interval, mounted on top of the concrete gage house on left edge of the dam with the top of funnel 11 ft above the ground.