Coosa River at Mayos Bar Lock and Dam near Rome, GA
River level and flood forecast · Floyd County
Normal11.5 ftas of Mon 3:45 PM
The river is 12.5 ft below flood stage (24 ft).
Flow: 2,250 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 7 PM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 35 ft |
| Moderate flood stage | 31 ft |
| Flood stage | 24 ft |
| Action stage | 21 ft |
| Record crest (April 1, 1886) | 43 ft |
What floods at each level
From the National Weather Service, highest first.
- 37 ftMajor flooding occurs with widespread inundation flooding along the river upstream and downstream from the gage on the old Lock and Dam behind the Trading Post. Flood waters will completely cover the large parking lot...picnic table pavilion...campground areas and the Lock and Dam Road from 2 to 6 feet deep. A home off of Blacks Bluff Road will be flooded one to two feet deep. The water level will be two feet deep in the USGS gage house with a loss of data transmission.
- 35 ftMajor flooding begins. Widespread inundation flooding occurs along the river upstream and downstream from the gage on the old Lock and Dam behind the Trading Post. Flood waters will completely cover the large parking lot...a picnic table pavilion...campground areas and Lock and Dam Road. A home off of Blacks Bluff Road will begin to flood. The water level will reach the bottom of the USGS gage house with a possible data transmission loss.
- 33 ftSignificant flooding continues to expand further into the woodlands...fields and pastures along the river upstream and downstream from the gage on the old Lock and Dam behind the Trading Post. The old Lock and Dam structure will be under 4 feet of water. Flood waters around one foot deep will cover a large portion of the parking lot...a picnic table pavilion and campground areas. A home off of Blacks Bluff Road will be surrounded by flood waters.
- 31 ftModerate flooding begins. Significant flooding occurs in the woodlands...fields and pastures along the river upstream and downstream from the gage on the old Lock and Dam behind the Trading Post. The old Lock and Dam structure will be under two feet of water. Flood waters will reach low portions of the large parking lot and approach a picnic table pavilion. The side yard of a home off of Blacks Bluff Road will be flooded.
- 29 ftMinor flooding continues to expand further into the woodlands...fields and pastures along the river upstream and downstream from the gage on the old Lock and Dam behind the Trading Post. The water will reach the top of the old Lock and Dam structure.
- 26 ftMinor flooding continues in the woodlands...fields and pastures along the river upstream and downstream from the gage on the old Lock and Dam behind the Trading Post. The boat ramp will be completely under water at Lock and Dam park.
- 24 ftMinor flooding begins of the woodlands...fields and pastures along the river upstream and downstream from the gage on the old Lock and Dam behind the Trading Post. The boat ramp will be mostly under water at the Lock and Dam park.
- 21 ftBankfull conditions are reached along the river upstream and downstream from the gage on the old Lock and Dam behind the Trading Post.
Highest crests on record
- 43 ft — April 1, 1886
- 37.05 ft — January 22, 1947
- 37 ft — December 30, 1932
- 36.9 ft — April 8, 1936
- 36.8 ft — February 12, 1946
Recent crests: 25.52 ft (April 8, 2025) · 27.48 ft (February 14, 2025) · 25.36 ft (September 28, 2024) · 24.17 ft (April 9, 2023) · 26.3 ft (January 5, 2023)
Up and down the river, and nearby
- Oostanaula River at US 27 at Rome, GA
- Etowah River at Coosa Valley Fairgrounds at Rome, GA
- Etowah River at GA 1 Loop near Rome, GA
- Oostanaula River near Rome, GA
- Heath Creek near Armuchee, GA
- Armuchee Creek at Old Dalton Road near Rome, GA
- Big Cedar Creek at Georgia Ave at Cedartown, GA
- Chattooga River above Gaylesville, AL
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (RMBG1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.