Alpharetta has put out a call for volunteers for the 31st edition of the annual Rivers Alive! cleanup event.

This year's effort, hosted by city of Alpharetta and the Alpharetta Natural Resource Commission, is set for 8:30 a.m. to noon Saturday, Sept. 28. "This is a great event for families, Scout troops, service groups and individuals to make a great impact on our community," Alpharetta said in an event announcement.

Participants will work out of Rock Mill Park, 3100 Kimball Bridge Road, removing litter and debris from roadways, streams and greenways; stenciling storm drains, and undertaking other projects. They will return to the park by 11:30 a.m. with collected litter and debris for weighing, tallying, pictures and refreshments.

Volunteers are asked to pre-register by calling 678-297-6213 or emailing tporter@alpharetta.ga.us. Those under age 18 must have a River's Alive volunteer waiver form completed and signed by a parent before arriving at the event.

Rivers Alive! is a joint project of the Georgia Environmental Protection Division's Rivers Alive program and Keep Georgia Beautiful. DataScan is the local sponsor. Information: https://bit.ly/2ko7u4j