Chattahoochee River below Morgan Falls Dam near Roswell
Flood levels
Official flood levels at this gauge: action stage begins at 819.0 ft; minor flooding begins at 821.0 ft; moderate flooding begins at 823.0 ft; major flooding begins at 826.0 ft.
| Action stage | 819.0 ft |
|---|---|
| Minor flooding | 821.0 ft |
| Moderate flooding | 823.0 ft |
| Major flooding | 826.0 ft |
Highest recorded crests
- 827.0 ft on Sep 22, 2009 (historic crest)
- 824.7 ft on Sep 17, 2004 (historic crest)
- 822.6 ft on Sep 21, 2009 (historic crest)
- 820.9 ft on Mar 6, 2003 (historic crest)
What the water does
National Weather Service impact statements for this gauge, in the Weather Service's own words.
| 819.0 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. |
|---|---|
| 821.0 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. |
| 822.0 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. |
| 823.0 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. |
| 825.0 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. |
| 826.0 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. |
| 827.0 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. |
Forecast office: NWS Peachtree City · River Forecast Center: Southeast River Forecast Center.
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Nearby stations and gauges
- Willeo Creek at GA 120 near Roswell NWS gauge · 2.5 mi
- Sope Creek at Lower Roswell Road near Marietta NWS gauge · 3.6 mi
- Big Creek below Hog Wallow at Roswell NWS gauge · 3.8 mi
- Chattahoochee River above Roswell NWS gauge · 4.0 mi
- Sewell Mill Creek at GA 120 near Marietta NWS gauge · 4.0 mi
- Nancy Creek at Johnson Ferry Road near Chamblee NWS gauge · 5.3 mi