River stage
Roswell, Chattahoochee River
- River level
- 811.58 ft
- Status
- Below flood stage
- 7-day change
- +0.40 ft
- Recent high
- 815.99 ft
- Recent low
- 811.10 ft
Last reported 2026-10-13 | NWS MGFG1
- 30-day change
- -0.55 ft
- Average
- 811.52 ft
- Readings
- 122
- Data span
- 122 days
- Record crest
- 827.01 ft
In brief
The Chattahoochee River at Roswell, GA read 811.58 ft on Oct 13, 2026, 7.42 ft below action stage. That is 0.55 ft lower than 30 days earlier.
Source: National Weather Service gauge MGFG1
River level timeline
Stage threshold profile
Highest crests on record
| Rank | Crest | Date |
|---|---|---|
| 1 | 827.01 ft | 2009-09-22 |
| 2 | 824.71 ft | 2004-09-17 |
| 3 | 822.59 ft | 2009-09-21 |
| 4 | 820.93 ft | 2003-03-06 |
| 5 | 820.56 ft | 2009-10-12 |
| 6 | 819.28 ft | 2005-07-16 |
| 7 | 819.12 ft | 2013-05-19 |
Flood crests recorded at this gauge by the National Weather Service.
What happens at each level
- 819.00 ft
Bankfull conditions are reached downstream from the gage at Morgan Falls Dam. Water begins to flow into low areas of the flood plain. This will affect residential yards of homes on Columns Drive in Cobb County...and Edgewater Drive...Ferry Landing...River Chase Circle...River Glen Trace and Winterthur Drive in Fulton County. Low areas of the Chattahoochee River National Recreation Area will begin to flood.
- 821.00 ft
Flood stage is reached. Minor flooding of residential yards occurs downstream from the gage at Morgan Falls Dam. This will affect homes on Columns Drive in Cobb County and the water will reach the bottom of the bridge over Sope Creek. Minor flooding will also affect the yards of homes on Edgewater Drive...Ferry Landing...River Chase Circle...River Glen Trace and Winterthur Drive in Fulton County. Portions of the Chattahoochee River National Recreation Area will have minor flooding.
- 822.00 ft
Minor flooding continues of residential yards downstream from the gage at Morgan Falls Dam. This will affect homes on Columns Drive in Cobb County and the water will begin to rise up on the concrete bridge over Sope Creek. Minor flooding will expand in the yards of homes on Edgewater Drive...Ferry Landing...River Chase Circle...River Glen Trace and Winterthur Drive in Fulton County. Portions of the Chattahoochee River National Recreation Area and Atlanta Country Club Golf Course will have minor flooding.
- 823.00 ft
Moderate flooding begins and expands further into the residential yards downstream from the gage at Morgan Falls Dam. This affects homes on Columns Drive in Cobb County and the water will begin to cover the road near Sope Creek. The water will begin to reach the foundations of homes on Edgewater Drive...Ferry Landing...River Chase Circle...River Glen Trace and Winterthur Drive in Fulton County. Large portions of the Chattahoochee River National Recreation Area will be under a few feet of water.
- 825.00 ft
Significant flooding occurs downstream from the gage at Morgan Falls Dam. This affects homes on Columns Drive in Cobb County and the water will cover portions of the road near Sope Creek. Flood waters begin to affect several homes on Edgewater Drive...Ferry Landing...River Chase Circle...River Glen Trace and Winterthur Drive in Fulton County. Some evacuations will be likely. Large portions of the Chattahoochee River National Recreation Area will be under several feet of water.
- 826.00 ft
Major flooding begins and causes widespread inundation and evacuations downstream from the gage at Morgan Falls Dam. Extensive damage occurs to homes on Columns Drive in Cobb County and the road is covered with a few feet of water. Flood waters affect many homes on Edgewater Drive...Ferry Landing...River Chase Circle...River Glen Trace and Winterthur Drive in Fulton County. Large portions of the Chattahoochee River National Recreation Area will be under several feet of water.
- 827.00 ft
Record flooding occurs with numerous evacuations downstream from the gage at Morgan Falls Dam. Extensive damage occurs to homes on Columns Drive in Cobb County and the road is under several feet of water. Widespread flood damage affects many homes on Edgewater Drive...Ferry Landing...River Chase Circle...River Glen Trace and Winterthur Drive in Fulton County. Most of the Chattahoochee River National Recreation Area will be under several feet of water. This will be similar to the September 2009 flood event.
Written by the local National Weather Service forecast office for this exact gauge.
Frequently asked questions
Is the Chattahoochee River flooding at Roswell?
No. The Chattahoochee River at Roswell is at 811.58 ft, 7.42 ft below action stage.
What is the flood stage at Roswell?
The National Weather Service sets action stage 819 ft, minor flooding 821 ft, moderate flooding 823 ft and major flooding 826 ft.
What is the highest the Chattahoochee River has been at Roswell?
The highest crest on record is 827.01 ft, on 2009-09-22.
Is the Chattahoochee River high or low right now at Roswell?
At 811.58 ft it is higher than 79% of readings over the last 122 days.
Stage and flood information from the NOAA National Weather Service (gauge MGFG1); daily history from the U.S. Geological Survey (site 02335815). Last reading 2026-10-13. For flood safety decisions always follow official National Weather Service warnings.