USGS Water-Year Summary 2021
02423425 CAHABA RIVER NEAR CAHABA HEIGHTS, AL
LOCATION - Lat 33°24'56", long 86°44'23" referenced to North American Datum of 1927, Shelby County, AL, Hydrologic Unit 03150202, on left bank 700 ft upstream from bridge on county road, 2.5 mi upstream from Little Shades Creek, 3.0 mi south of Cahaba Heights, 3.4 mi downstream from Little Cahaba River, and at river mile 144.9.
DRAINAGE AREA - 201 mi².
PERIOD OF RECORD - August 1975 to September 1985, July 1996 to current water year.
GAGE - Water-stage recorder and concrete control. Elevation of gage is 410 ft above NGVD of 1929, from topographic map.