Big Haynes Creek at Lenora Road near Snellville, GA

River level and flood forecast · Gwinnett County

Normal3.1 ftas of Mon 4 PM

The river is 6.9 ft below flood stage (10 ft).

Flow: 23 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	14 ft
Moderate flood stage	12 ft
Flood stage	10 ft
Action stage	8 ft
Record crest (April 19, 2019)	12.74 ft

What floods at each level

From the National Weather Service, highest first.

17 ftFlooding never seen before occurs with widespread inundation of the woodlands and pastures upstream and downstream from the gage on Lenora Road. Several homes...barns and outbuildings near the creek will be gin to flood. The water will be around 3 feet deep over the single lane wood and steel bridge and portions of the road. County officials will have the road closed. The water level will reach the bottom of the USGS gage house which may cause data transmission problems.
15 ftMajor flooding continues with widespread inundation of the woodlands and pastures upstream and downstream from the gage on Lenora Road. Several outbuildings upstream and on the left bank from the bridge will be flooded with around 5 feet of water. The water will be around one foot deep over the single lane wood and steel bridge and portions of the road. County officials will have the road closed.
14 ftMajor flooding begins. Widespread inundation flooding occurs in the woodlands and pastures upstream and downstream from the gage on Lenora Road. Several outbuildings upstream and on the left bank from the bridge will be flooded with around 4 feet of water. The water will begin top the single lane wood and steel bridge and flood portions of the road. County officials will likely have the road closed.
13 ftSignificant flooding expands further into the woodlands and pastures near the creek upstream and downstream from the gage on Lenora Road. Some outbuildings upstream and on the left bank from the bridge will be flooded with around 3 feet of water. The water level will be hitting the single lane wood and steel bridge. County officials will likely have it closed.
12 ftModerate flooding begins. Significant flooding occurs in the woodlands and pastures near the creek upstream and downstream from the gage on Lenora Road. Some outbuildings near the creek upstream and on the left bank from the bridge will be flooded with around two feet of water. The water level will reach the bottom of the single lane wood and steel bridge. County officials may need to close it. This flooding will be worse than March 2003.
11 ftMinor flooding continues in the woodlands and pastures near the creek upstream and downstream from the gage on Lenora Road. Some outbuildings near the creek upstream and on the left bank from the bridge will be flooded with around one foot of water.
10 ftFlood stage is reached. Minor flooding will occur in the woodlands and pastures near the creek upstream and downstream from the gage on Lenora Road. Some outbuildings near the creek upstream and on the left bank from the bridge may begin to flood.
8 ftBankfull conditions are reached upstream and downstream on the creek from the stream gage at Lenora Road.

Highest crests on record

12.74 ft — April 19, 2019
11.9 ft — December 24, 2015
11.89 ft — July 7, 2005
11.65 ft — March 20, 2003
11.62 ft — January 9, 2024

Recent crests: 10.92 ft (June 10, 2025) · 10.19 ft (February 13, 2025) · 11.29 ft (September 27, 2024) · 10.92 ft (March 6, 2024) · 11.62 ft (January 9, 2024)

Up and down the river, and nearby

See it on the live map →Radar & warnings for Gwinnett County NWS gauge page USGS gauge 02207385

Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (BIGG1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.