USGS Water-Year Summary 2020
02053200 POTECASI CREEK NEAR UNION, NC
LOCATION - Lat 36°22'15", long 77°01'32" referenced to North American Datum of 1983, Hertford County, NC, Hydrologic Unit 03010204, on right bank at downstream side of bridge on North Carolina Highway 11, 2.8 mi north of Union, 3 mi downstream from Cutawhiskie Swamp, and 3.5 mi upstream from Bells Branch.
DRAINAGE AREA - 225 mi².
- WDR NC-81-1: Drainage area.
PERIOD OF RECORD - March 1958 to current year. Occasional low-flow measurements, water years 1953-57.
GAGE - Water-stage recorder. Datum of gage is 3.53 ft above NGVD of 1929. Prior to December 1, 1958, nonrecording gage at same site and datum. Satellite telemetry at streamgage.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood in 1929 reached a stage of 19.1 ft; discharge, 4,050 ft³/s; and flood of August 1940 reached a stage of 24.1 ft; discharge, 7,000 ft³/s, from rating curve extended above 4,000 ft³/s, from information furnished by North Carolina State Highway Commission.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge for period of record, 17,000 ft³/s, from rating curve extended above 5,800 ft³/s on basis of discharge-conveyance ratios of peak flow; maximum gage height, 28.90 ft., from outside floodmarks.