River stage
Cumming, Big Creek
- River level
- -0.28 ft
- Status
- Below flood stage
- 7-day change
- +0.15 ft
- Recent high
- 4.44 ft
- Recent low
- -0.62 ft
Last reported 2026-10-13 | NWS CMGG1
- 30-day change
- +0.06 ft
- Average
- -0.11 ft
- Readings
- 122
- Data span
- 122 days
- Record crest
- 10.43 ft
In brief
The Big Creek at Cumming, GA read -0.28 ft on Oct 13, 2026, 4.28 ft below action stage. That is 0.06 ft higher than 30 days earlier.
Source: National Weather Service gauge CMGG1
River level timeline
Stage threshold profile
Highest crests on record
| Rank | Crest | Date |
|---|---|---|
| 1 | 10.43 ft | 2009-09-22 |
| 2 | 9.15 ft | 2013-08-01 |
| 3 | 9.02 ft | 2020-10-11 |
| 4 | 8.86 ft | 2015-01-04 |
| 5 | 8.84 ft | 2023-01-04 |
| 6 | 8.80 ft | 2020-02-06 |
| 7 | 8.76 ft | 2014-04-07 |
| 8 | 8.54 ft | 2018-11-13 |
Flood crests recorded at this gauge by the National Weather Service.
What happens at each level
- 4.00 ft
Bankfull conditions are reached in some low lying areas of the creek upstream and downstream from the gage at Atlanta Highway or Georgia Highway 9. A small portion of the sidewalk on the Big Creek Greenway under Majors Road will begin to flood.
- 5.00 ft
Bankfull conditions continue to expand into low lying areas of the creek upstream and downstream from the gage at Atlanta Highway or Georgia Highway 9. Portions of the sidewalk on the Big Creek Greenway under the Georgia 400 Highway and McFarland Road begin to flood. A portion of the sidewalk under Majors Road will be covered with around one foot of water. The water level will begin reaching the bottom of the boardwalk along several sections of the Greenway.
- 6.00 ft
Flood stage is reached. Minor flooding will expand into the natural flood plain of the creek upstream and downstream from the gage at Atlanta Highway or Georgia Highway 9. Large portions of the sidewalk and boardwalk of the Big Creek Greenway will begin to flood. The areas under the Georgia 400 Highway and McFarland Road will be covered with around one foot of water. A portion of the sidewalk under Majors Road will be covered with around two feet of water.
- 7.00 ft
Minor flooding continues to expand into the natural flood plain of the creek upstream and downstream from the gage at Atlanta Highway or Georgia Highway 9. Large portions of the sidewalk and boardwalk of the Big Creek Greenway will be flooded. The areas under the Georgia 400 Highway and McFarland Road will be covered with around two feet of water. A portion of the sidewalk under Majors Road will be covered with around 3 feet of water.
- 8.00 ft
Minor flooding will expand into the natural flood plain of the creek upstream and downstream from the gage at Atlanta Highway or Georgia Highway 9. Most of the sidewalk and boardwalk of the Big Creek Greenway will be under a foot or two of water. The areas under the Georgia 400 Highway and McFarland Road will be covered with around three feet of water. A portion of the sidewalk under Majors Road will be covered with around four feet of water.
- 10.00 ft
Minor flooding continues to expand further into the woodlands and pasture near the creek. The sidewalk and boardwalk of the Big Creek Greenway will be completely flooded out. The areas under the Georgia 400 Highway and McFarland Road will be covered with around five feet of water. A portion of the sidewalk under Majors Road will be covered with around six feet of water. Maximum flow will be reached through the culvert at Atlanta Highway and erosion of the banks near the bridge will begin.
- 12.00 ft
Moderate flooding begins with significant flooding expanding further into the woodlands and pasture near the creek. The sidewalk and boardwalk of the Big Creek Greenway will be completely flooded out with several feet of water. The water will begin flowing over portions of the Atlanta Highway. Extensive erosion of the banks near the culvert may cause a washout.
- 14.00 ft
Moderate flooding continues with significant flooding expanding further into the woodlands and pasture near the creek. The sidewalk and boardwalk of the Big Creek Greenway will be completely flooded out with several feet of water. Around two feet of water will be flowing over portions of the Atlanta Highway. This will likely cause a washout of the road near the culvert. The water level will also be reaching the bottom of the bridge on Majors Road.
Written by the local National Weather Service forecast office for this exact gauge.
Frequently asked questions
Is the Big Creek flooding at Cumming?
No. The Big Creek at Cumming is at -0.28 ft, 4.28 ft below action stage.
What is the flood stage at Cumming?
The National Weather Service sets action stage 4 ft, minor flooding 6 ft, moderate flooding 12 ft and major flooding 15 ft.
What is the highest the Big Creek has been at Cumming?
The highest crest on record is 10.43 ft, on 2009-09-22.
Is the Big Creek high or low right now at Cumming?
At -0.28 ft it is higher than 52% of readings over the last 122 days.
Stage and flood information from the NOAA National Weather Service (gauge CMGG1); daily history from the U.S. Geological Survey (site 02335580). Last reading 2026-10-13. For flood safety decisions always follow official National Weather Service warnings.