In an effort to control aquatic vegetation, the water control structure on Lake Bistineau near Minden, will be opened on Aug. 8 for a lake drawdown.

As a result of mild winter temperatures, giant salvinia has expanded beyond the ability of herbicide applications and salvinia weevils to control it, according to the state Department of Wildlife and Fisheries. Department staff estimated that the giant salvinia covers more than 2,000 acres currently.

The lake will be lowered seven feet below pool stage and will remain lowered until Jan. 31. Boaters are asked to be cautious because during the low water period boat lanes will not provide the normal clearance for underwater obstructions, according to a press release from the department.

For more information about the drawdown, contact Evan Thames, LDWF Biologist Manager, at (318) 371-5216 or