Coosa River at Logan Martin Dam
Highest listed crest 475.31 ftFlood stage 467.0 ft22 crests since 1976
The Coosa River at Logan Martin Dam crested at major flood stage 1 time among the 22 crests the National Weather Service lists from 1976 to 2016. The highest, 475.31 ft on April 6, 1977, was major flooding, 8.31 feet above flood stage. 3 other gauges on the Coosa River crested above flood stage within a week of it.
The gauge
- Highest listed crest
- 475.31 ft
- April 6, 1977
- Flood stage
- 467.0 ft
- Major flooding from 475.0 ft
- Crests at major
- 1
- 35th of 89 gauges in Alabama
- Most recent flood crest
- February 26, 2016
- 467.66 ft, minor flooding
Flood stages
The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.
| Action stage | 465.5 | 2 | Mar 23, 2001 |
| Flood stage (minor) | 467.0 | 8 | Feb 26, 2016 |
| Moderate flood stage | 470.0 | 9 | Mar 12, 2011 |
| Major flood stage | 475.0 | 1 | Apr 6, 1977 |
Every listed crest
22 crests from 1976 to 2016. Filled: at or above flood stage. Hover a crest for its date and stage.
Crests at or above flood stage, by decade
- These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
- Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.
Highest crests
| 1 | Apr 6, 1977 | 475.31 | +8.31 | Major |
| 2 | Feb 18, 1990 | 473.05 | +6.05 | Moderate |
| 3 | Mar 19, 1980 | 472.61 | +5.61 | Moderate |
| 4 | Oct 6, 1995 | 472.52 | +5.52 | Moderate |
| 5 | Mar 19, 1990 | 472.49 | +5.49 | Moderate |
| 6 | May 9, 2003 | 472.12 | +5.12 | Moderate |
| 7 | Mar 6, 1979 | 472.10 | +5.10 | Moderate |
| 8 | Apr 3, 1976 | 471.50 | +4.50 | Moderate |
| 9 | Dec 7, 1983 | 470.79 | +3.79 | Moderate |
| 10 | Mar 12, 2011 | 470.55 | +3.55 | Moderate |
| 11 | Jan 9, 2009 | 469.86 | +2.86 | Minor |
| 12 | Mar 9, 1996 | 469.22 | +2.22 | Minor |
| 13 | Jan 29, 1996 | 468.94 | +1.94 | Minor |
| 14 | May 8, 2013 | 468.86 | +1.86 | Minor |
| 15 | Jun 22, 1989 | 468.00 | +1.00 | Minor |
| 16 | Feb 26, 2016 | 467.66 | +0.66 | Minor |
| 17 | Mar 9, 1989 | 467.09 | +0.09 | Minor |
| 18 | Nov 13, 2009 | 467.03 | +0.03 | Minor |
| 19 | Mar 23, 2001 | 466.36 | −0.64 | Action |
| 20 | Sep 23, 1994 | 465.98 | −1.02 | Action |
| 21 | Oct 3, 1994 | 465.15 | −1.85 | Below flood stage |
| 22 | Jun 3, 1995 | 465.13 | −1.87 | Below flood stage |
The worst floods along the Coosa River
For this gauge's highest crests, the other gauges on the Coosa River that crested above flood stage within a week.
April 6, 1977: 475.31 ft here, major flooding
- GadsdenAL · Apr 5, 1977 · 514.40 ft · Moderate
- Mayos Bar Lock and Dam near RomeGA · Apr 6, 1977 · 33.79 ft · Moderate
- Weiss DamAL · Apr 8, 1977 · 570.91 ft · Minor
February 18, 1990: 473.05 ft here, moderate flooding
March 19, 1980: 472.61 ft here, moderate flooding
- Weiss DamAL · Mar 23, 1980 · 569.96 ft · Minor
- ChildersburgAL · Mar 21, 1980 · 405.37 ft · Minor
- Mayos Bar Lock and Dam near RomeGA · Mar 22, 1980 · 30.97 ft · Minor
Gauges on the Coosa River
Flood gauges sharing the river's name, linked within 80 miles of one another.
| Childersburg | AL | 412.86 ft, Feb 23, 1961 | 6 |
| Gadsden | AL | 525.10 ft, Apr 6, 1886 | 6 |
| Logan Martin Dam this gauge | AL | 475.31 ft, Apr 6, 1977 | 1 |
| Mayos Bar Lock and Dam near Rome | GA | 43.00 ft, Apr 1, 1886 | 11 |
| State Line, AL/GA | AL | 19.86 ft, Dec 30, 2015 | 0 |
| Weiss Dam | AL | 571.02 ft, Feb 25, 2019 | 0 |
| Wetumpka | AL | 57.90 ft, Apr 8, 1938 | 6 |
Talladega County: every hazard · River floods across the country · Alabama
NOAA National Water Prediction Service, gauge CCSA1, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.