Cobbs Creek at Rainbow Drive near Decatur, GA
River level and flood forecast · De Kalb County
Normal1.6 ftas of Mon 3:30 PM
The river is 9.4 ft below flood stage (11 ft).
Flow: 3 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 | 20 ft |
| Moderate flood stage | 17 ft |
| Flood stage | 11 ft |
| Action stage | 9 ft |
| Record crest (October 11, 2020) | 13.32 ft |
What floods at each level
From the National Weather Service, highest first.
- 22 ftWidespread inundation flooding occurs in the residential yards and woodlands along the creek upstream and downstream from Rainbow Drive. The flood waters will be 2 to 3 feet over the bridge and road. County officials will have the road closed. The water will be up to 14 feet deep in portions of backyards of several homes off Kings Park Circle...Rainover Drive...Rainshower Drive and Calumet Road. Several of the homes will be flooded with 1 to 3 feet of water. The water level will enter the USGS gage house.
- 20 ftMajor flooding begins with widespread inundation of the residential yards and woodlands along the creek upstream and downstream from Rainbow Drive. The flood waters will top the bridge and be around one foot deep over the road. County officials will close the bridge. The water will be up to 12 feet deep in portions of backyards of several homes off Kings Park Circle...Rainover Drive...Rainshower Drive and Calumet Road. Some of the homes will begin to flood.
- 19 ftSignificant flooding continues to expand into the residential yards and woodlands along the creek upstream and downstream from Rainbow Drive. The water level will be hitting the bridge and begin to flood the road. County officials will likely close the bridge. Flood waters will be up to 10 feet deep in portions of backyards of several homes off Kings Park Circle...Rainover Drive...Rainshower Drive and Calumet Road. The water level will reach the foundations of some of the homes.
- 17 ftModerate flooding begins. Significant flooding occurs in the residential yards and woodlands along the creek upstream and downstream from the gage at Rainbow Drive. The water level will be near the bottom of the bridge. Flood waters will be up to 8 feet deep in portions of backyards of several homes off Kings Park Circle...Rainover Drive...Rainshower Drive and Calumet Road.
- 15 ftMinor flooding continues to expand into the residential yards and woodlands along the creek upstream and downstream from the stream gage at Rainbow Drive. Flood waters will be up to 6 feet deep in portions of backyards of several homes off Kings Park Circle...Rainover Drive...Rainshower Drive and Calumet Road.
- 13 ftMinor flooding continues in the residential yards and woodlands along the creek upstream and downstream from the stream gage at Rainbow Drive. Flood waters will be from 1 to 4 feet deep in portions of backyards of a few homes off Kings Park Circle...Rainover Drive...Rainshower Drive and Calumet Road.
- 11 ftFlood stage is reached. Minor flooding begins in the residential yards and woodlands along the creek upstream and downstream from the stream gage at Rainbow Drive. Flood waters will be from one to two feet deep in portions of backyards of a few homes off Kings Park Circle...Rainover Drive...Rainshower Drive and Calumet Road.
- 9 ftBankfull conditions are reached along the creek upstream and downstream from the stream gage at Rainbow Drive. Water will begin to flow into low portions of residential yards.
Highest crests on record
- 13.32 ft — October 11, 2020
- 12.8 ft — December 24, 2015
- 11.86 ft — March 6, 2024
- 11.81 ft — September 27, 2024
Recent crests: 11.81 ft (September 27, 2024) · 11.86 ft (March 6, 2024) · 13.32 ft (October 11, 2020) · 12.8 ft (December 24, 2015)
Up and down the river, and nearby
- Shoal Creek at Columbia Drive near Atlanta, GA
- Snapfinger Creek at Thompson Mill Road near Lithonia, GA
- Doolittle Creek at Flat Shoals Rd near Decatur, GA
- South River at Flakes Mill Road near Snapfinger, GA
- Snapfinger Creek at Redan Road near Glen Haven, GA
- South River at Bouldercrest Road at Atlanta, GA
- Pole Bridge Creek at Evans Mill Road near Lithonia, GA
- South Fork Peachtree Creek at Casa Drive at Clarkston, GA
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (COBG1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.