ROSWELL, Ga. -- Swimming and tubing are popular Memorial Day weekend activities, but families may not want to do it in the Chattahoochee River if E. Coli levels don't drop.

The Chattahoochee riverkeeper says 235 is a safe, acceptable level reading for E. Coli.  On Monday, that number is believed to have soared above 6,000.

"Which is probably 20 to 30 times higher than the recommended level of bacteria," Executive Director Sally Bethea said.

The levels, like the water, have already started to drop and Bethea says if the sunny, warm weather holds, the water should be fine by the weekend.

But if the rains kick back up on Wednesday and Thursday, "take a walk beside it, but I wouldn't get in it," said Bethea.

ATLANTA -- The Fulton County School System is altering the framework of the Continuous Achievement model, which plays a role in how math and reading material is delivered to students. 

By using Continuous Achievement, students can learn at a level that suits them, allowing for further academic acceleration and achievement. 

The model, according to a spokeswoman for FCS, is ranked for academic placement, and reported twice per semester, starting at 2.1, 2.2, 3.1 as levels move up. That level will also be included in report cards and progress checklists. 

"This is exciting for Fulton County Schools. By promoting innovation, Continuous Achievement is consistent with our vision as a charter system," Superintendent Robert Avossa said. "It really gets to what we're about - customizing students' learning experiences so they can learn to their full potential." 

ATLANTA -- Heavy rain throughout much of metro Atlanta resulted in flooding Sunday morning.

11Alive meteorologist Allison Chinchar said certain areas in northeastern Georgia got between 4 and 6 inches of rain, including Forsyth, Hall and north Fulton counties.

PHOTOS | Rain and storm damage -- add your own

The Hall County Sheriff's Office said the Atlanta Road area of Flowery Branch should be avoided, as more than 6 inches of rain shut down the street between Spout Springs and Wade Orr roads. The city of Flowery Branch declared a state of emergency Sunday evening.