Cobb County Government


Sweetwater Creek Flood Risk Management Study Open House

The U.S. Army Corps of Engineers (USACE), Mobile District invites the public to participate in an open house, June 13, for the proposed Sweetwater Creek Flood Risk Management Study. The open house will be held at the Cobb County Water System Laboratory Training Room, 662 South Cobb Drive, Marietta, Ga. 30060, from 6 to 7:30 p.m. Any person with an interest in the proposed flood mitigation project is welcome to attend.

In the last 10 years, Sweetwater Creek has crested 10 feet above the channel bottom (the lowest flood stage) six times. In September 2009, an estimated 10 to 20 inches of rain fell in less than 24 hours, resulting in historic flash flooding. The event set a new flood record for the area. Ten people lost their lives as a result of the flooding. In addition, the flooding caused more than $500 million in property damage. More than 20,000 homes, businesses, and other buildings sustained major damage.

This open house is an opportunity for members of the public to learn more about the study and possible project. Members of the Mobile District project team along with representatives from the local sponsor, Cobb County, will be on hand with graphical displays to explain the ongoing study the Mobile District staff is conducting and to answer questions related to the study.


Our Mission Statement:

The Water System, as an agency of Cobb County Government, is a utility operation responsible for water distribution, wastewater collection and treatment, and stormwater management services.

stormwater logo Stormwater Management Goals and Objectives:

• To continuously update the limits, magnitude and frequency of the 100-year frequency flood hazard in the County; to determine the extent that flood hazards areas have been augmented by human activity (i.e. dams and urbanization); to exclude future development from these areas; and to publicly own, preserve and reclaim major floodplains as natural flood storage areas to the maximum extent practicable.

• To comply with federal and state mandates regarding clean water laws and regulations; to monitor a wide spectrum of non-point source pollutants within the major streams in Cobb County; to implement plans to improve the aquatic habitat and quality of streams; and to monitor the biological diversity of our stream as an indicator of the long-term water quality health of our major streams.

• To maintain stormwater infrastructure dedicated to and accepted by Cobb County for perpetual maintenance according to our current County Code.

Helpful Links

National Flood Insurance Program -
FloodSmart -
Brochure: Identify The Risk
Preliminary Release of Maps