Flood Warning active for Big Creek through Wednesday morning

The NWS has a Flood Warning in effect for Big Creek near Alpharetta through 8 AM Wednesday. As of late Monday the creek was at 7.7 feet — flood stage is 7 — and is expected to crest at 8.5 feet just after midnight tonight, matching the March 2020 high. Water should fall back below flood stage by early Wednesday morning.

Already flooded: portions of the Big Creek Greenway, especially upstream and downstream of the Kimball Bridge Road gauge and near Rock Mill Park, are sitting under 1–2 feet of water and closed. Sections of the YMCA Campground off Preston Ridge Road are flooding too, plus woodlands and fields along the creek from south Forsyth through Roswell.

One Milton-specific reminder while the ground stays saturated: many Milton homes — especially in AG-1 and rural-residential areas — are on septic. When the drain field is already wet, it can't absorb efficiently, and slow drains or yard pooling are the first signs it's struggling. Worth easing off heavy water use for a day or two if you see either.

Source: National Weather Service Peachtree City office.