Pew Creek at Patterson Road near Lawrenceville, GA

River level and flood forecast · Gwinnett County

Normal3.3 ftas of Mon 5:15 PM

The river is 7.7 ft below flood stage (11 ft).

The last 7 days and the forecast

02.557.51012.515TueWedThuFriSatSunMonAction 9 ftFlood 11 ftModerate 13 ftNowObserved (ft)NWS forecast

NWS forecast issued Sun, Dec 31, 7 PM. Forecasts change as rain falls and as upstream water arrives.

Flood stages

Major flood stage17 ft
Moderate flood stage13 ft
Flood stage11 ft
Action stage9 ft
Record crest (September 21, 2009)16.69 ft

What floods at each level

From the National Weather Service, highest first.

  • 17 ftMajor flooding begins. The water level reaches the top of the bridge causing severe erosion and potentially a washout.
  • 16 ftThe water level begins to cover Patterson Road just south of the bridge.
  • 14 ftThe Patterson Road bridge begins to form an obstacle and act like a dam causing some backwater and erosion eddies to the sides of the bridge.
  • 13 ftModerate flooding begins. The water level reaches the bottom of the bridge on Patterson Road.
  • 11 ftMinor flooding of the natural flood plain begins. The parking lot of the Saratoga Swim and Tennis Club downstream from the river gauge begins to flood.
  • 9 ftBankfull is reached upstream and downstream from the river gauge at Patterson Road.

Highest crests on record

  1. 16.69 ft — September 21, 2009
  2. 15.18 ft — December 28, 2018
  3. 15 ft — September 21, 2009
  4. 14.34 ft — May 19, 2013
  5. 13.66 ft — January 21, 2017

Recent crests: 11.86 ft (August 3, 2025) · 13.63 ft (June 13, 2025) · 12.4 ft (February 13, 2025) · 12.26 ft (September 27, 2024) · 12.04 ft (March 6, 2024)

Up and down the river, and nearby

Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (LAWG1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.