Army Corps of Engineers work to reduce algae problems ahead of rainy season Col. Andrew Kelly with the Army Corps of Engineers says they want to get the lake level down now so there won't be algae problems when the rainy season starts. By: WFTX Digital Team and last updated 2021-03-12 06:05:45-05 The federal agency that manages the level of Lake O says it's just not dropping as quickly as they would like. Col. Andrew Kelly with the Army Corps of Engineers says they want to get the lake level down now so there won't be algae problems when the rainy season starts.