Crooked Creek near Norcross, GA
River level and flood forecast · Gwinnett County
Normal3.7 ftas of Mon 3:45 PM
The river is 7.3 ft below flood stage (11 ft).
Flow: 5 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 | 16 ft |
| Moderate flood stage | 14 ft |
| Flood stage | 11 ft |
| Action stage | 9 ft |
| Record crest (September 21, 2009) | 14.59 ft |
What floods at each level
From the National Weather Service, highest first.
- 16 ftMajor flooding begins and inundates the woodlands and fields upstream and downstream from the gage at Spalding Drive. The water level reaches the top of the Spalding Drive bridge causing severe erosion and potentially a washout. A large portion of Spalding Drive is flooded around a one foot deep. County officials will close the bridge and road.
- 15 ftSignificant flooding continues mainly on the left bank upstream and downstream from the gage at Spalding Drive. The Spalding Drive bridge forms an obstacle and acts like a dam causing some backwater and erosion eddies to the sides of the bridge. A portion of Spalding Drive just west of the bridge begins to flood. County officials will likely close the bridge and road.
- 14 ftModerate flooding begins. Significant flooding occurs mainly on the left bank upstream and downstream from the gage at Spalding Drive. The Spalding Drive bridge begins to form an obstacle and act like a dam causing some backwater and erosion eddies to the sides of the bridge. County officials may need to close it.
- 13 ftMinor flooding continues of the natural flood plain mainly on the left bank upstream and downstream from the gage at Spalding Drive. The water level reaches the bottom of the shallow bridge on Spalding Drive.
- 11 ftFlood stage is reached. Minor flooding of the natural flood plain begins mainly on the left bank upstream and downstream from the gauge at Spalding Drive.
- 9 ftBankfull conditions occur upstream and downstream from the gage at Spalding Drive.
Highest crests on record
- 14.59 ft — September 21, 2009
- 13.69 ft — September 21, 2009
- 13.61 ft — October 11, 2020
- 13.59 ft — June 20, 2017
- 13.08 ft — May 3, 2010
Recent crests: 11.93 ft (February 13, 2025) · 12.21 ft (September 27, 2024) · 11.98 ft (July 24, 2024) · 12.78 ft (August 30, 2023) · 12.83 ft (January 4, 2023)
Up and down the river, and nearby
- Chattahoochee River above Roswell, GA
- Chattahoochee River at Highway 141 near Norcross, GA
- North Fork Peachtree Creek at Graves Road near Norcross, GA
- Beaver Ruin Creek at Mitchell Road near Norcross, GA
- Bromolow Creek Tributary at Pond Road near Norcross, GA
- Big Creek near Alpharetta, GA
- Jackson Creek at Angels Lane near Lilburn, GA
- Big Creek below Hog Wallow at Roswell, GA
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (CRKG1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.