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Water-Year Summary for Site 02423425

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00060 Discharge(Mean)  
00065 Gage height(Mean)  

Water year 2023: 2022-10-01 to 2023-09-30
 
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USGS Water-Year Summary 2023
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.
REVISIONS HISTORY - Prior to Aug, 12, 2022 datum of gage was determined by a topo map based on NGVD29 (410.0ft). GNSS Static Level II Survey and differential leveling surveys were conducted to update datum of gage and found to be 405.172ft NAVD88 on 05/11/2022.
SURFACE-WATER RECORDS
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.
REMARKS - Record considered good, except for estimated periods, which are poor. An average of 82 ft³/s is diverted above station by Birmingham Water Works Board, and is not included in records. Flow partly regulated by Purdy Lake(capacity, 15,300 acre-ft) on Little Cahaba River.