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Little Cahaba River at Cah Bea Rd near Cahaba Hts AL Water Level Today

Alabama · USGS gauge 02423414 · live data · Updated Oct 28, 2026

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About this gauge

USGS gauge 02423414 sits on the Little Cahaba River and reads everything draining 47 square miles of the Cahaba basin. Its datum sits 432 feet above sea level NAVD88. Daily flow has been on record here since 2003, 23 years of it.

Where this gauge sits in the drainage

Lake Purdy near Cahaba Heights Alabama sits immediately upstream, so dam releases rather than rainfall set the flow here. Four gauged sites sit upstream of here. The closest is Lake Purdy near Cahaba Heights Alabama, reading 43 square miles. This gauge adds the 4.3 square miles that drain in between. Downstream the next reading comes from Cahaba River near Cahaba Heights AL at 201 square miles, so what passes this gauge is about 23% of the water measured there. Water passing here goes on to Cahaba River near Hoover, AL, Cahaba River near Acton AL and Cahaba River near Helena AL.

Normal flows here

The Little Cahaba River runs a median of 61 cfs at this gauge across 23 years of record. March is the fullest month at a median 104 cfs, and December the leanest at 46 cfs. The highest daily mean on record is 2,560 cfs in 2014, and the lowest is 1.3 cfs in 2025.

Median flow by month
MonthMedian flowShare of annual median
Jan67 cfs110%
Feb101 cfs166%
Mar104 cfs170%
Apr84 cfs138%
May59 cfs97%
Jun56 cfs93%
Jul56 cfs92%
Aug56 cfs92%
Sep62 cfs102%
Oct63 cfs103%
Nov50 cfs81%
Dec46 cfs75%

Medians from the USGS daily-statistics record, 2003 to 2026. A month at 100% is running at its own long-term median.

Dams near this gauge

The Army Corps' Logan Martin Dam sits 20 miles from this gauge and its releases set what this gauge reads. The Corps publishes no release schedule for this project; its last observed release and elevations load below.

Nearby river gauges

Live streamflow and gage height: USGS gauge 02423414. Percentile context computed against the gauge's period of record. Not for navigation.

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