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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
02423647 CAHABA RIVER NEAR WEST BLOCTON AL
LOCATION - Lat 33°05'53", long 87°03'17" referenced to North American Datum of 1927, Bibb County, AL, Hydrologic Unit 03150202, on left bank, on upstream side of bridge, 0.2 mi upstream from Little Ugly Creek, 4.4 mi east of West Blocton, and at mile 95.8.
DRAINAGE AREA - 593 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - September 1976 to September 1984, April 2017 to current year.
GAGE - Water-stage recorder. Datum of gage is 240 ft above NGVD of 1929, from topographic map.
REMARKS - Record considered good. An average of 82 ft³/s is diverted upstream from station by Birmingham Water Works Board, and not included in records. Flow partly regulated by Lake Purdy ( capacity, 15,300 acre-ft) on Little Cahaba River and several wastewater treatment plants.
WATER-QUALITY RECORDS
PERIOD OF RECORD - May 2017 to current year (seasonal).
PERIOD OF DAILY RECORD - WATER TEMPERATURE: May 2017 to current year (seasonal). DISSOLVED OXYGEN: May 2017 to current year (seasonal).
INSTRUMENTATION - Water quality monitor
REMARKS - Maximum and minimum values given in EXTREMES FOR PERIOD OF RECORD may have been exceeded during periods of missing record.
EXTREMES FOR PERIOD OF RECORD - WATER TEMPERATURE: maximum, 32.0 degC, August 15, 2019; minimum, 12.9 degC, October 30, 2017; DISSOLVED OXYGEN: maximum, 11 mg/l, April 2, 2018; minimum, 4.6 mg/l, July 2, 2018.
