In cooperation with the Highway Division, Georgia Department of Transportation, the U.S. Geological Survey determined the backwater effects of existing bridges and dikes on Cedar Creek at Cedartown, Georgia, for the reach from West Girard Avenue to the Georgia Avenue relocation. The maximum backwater effect for the bridges was 1.7 feet in the upstream approach at the Seaboard Coastline Railroad bridge as a combined result of the Georgia Highway 278 bridge and the Seaboard Coastline Railroad bridge. The maximum effect from the existing dikes was 0.7 foot at the approach section of Georgia Highway 278.