In September 2009, the Dog River watershed, along with most of northern Georgia, experienced heavy rainfall.

The Dog River, overwhelmed by large amounts of runoff from saturated ground in the basin, experienced massive flooding.

The river crested at 33.83 feet (10.31 m) and had a peak discharge of 59,900 cu ft/s (1,700 m3/s), nearly six times the 100-year flood level.

[5] One of the ten deaths associated with the floods in Georgia occurred in the Dog River.

A Carroll County resident, Debbie Hooper, was killed when her Jeep Cherokee was swept off the road by floodwaters.