The U.S. Army Corps of Engineers is again asking for public comment on a proposed update to the document that outlines management for the Apalachicola-Chattahoochee-Flint River Basin, which includes Lake Lanier.The process to update the Master Water Control Manual has been in the works for years but was thrown into limbo as the courts went back and forth on what Lake Lanier’s water could be used for.The corps first had a scoping period in 2008 as it began the process to update the manual, which was developed in 1958, shortly after Lake Lanier was formed. The corps then had a second scoping period after a 2009 ruling from U.S. District Court Judge Paul Magnuson that severely limited the use of Lanier’s water as a drinking source. That ruling was seen as a major setback for Georgia in its fight to control the water that flows from Lake Lanier along the Alabama border and empties into the Apalachicola Bay in Florida.