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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
03436100 RED RIVER AT PORT ROYAL, TN
LOCATION - Lat 36°33'17", long 87°08'31" referenced to North American Datum of 1983, Montgomery County, TN, Hydrologic Unit 05130206, on left bank at county road bridge at Port Royal, 250 ft downstream from Sulphur Fork, and at mile 25.5.
DRAINAGE AREA - 926 mi² of which 430 mi² probably is noncontributing. No archival information is available on this calculation, however a related study by David Ladd(GIS-TN) calculates the noncontributing area at 46% or 426 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - July 1961 to September 1991. October 1991 to September 1996, crest-stage partial record station. October 1997 to current year.
GAGE - Data collection platform and crest-stage gage. Datum of gage is 375.974 ft above NAVD88. July 13, 1961 to Oct. 9, 1963, nonrecording gage and crest-stage gage at same site and datum.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Jan. 23, 1937 reached a stage of 44.4 ft; from flood profile of U.S. Army Corps of Engineers.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 63,200 ft³/s, May 3, 2010, gage height, 49.48 ft. Minimum discharge, 48 ft³/s, Oct. 11-13, 2007; minimum daily, 49 ft³/s, Oct. 13, 2007.
