 Since 2004, there have been active efforts on the lake to dredge many parts of the shallow areas on the lake to remove debris from the bottom of the lake, remove sandbars, and increase the lake's depth.Since formed, Lake Shafer has been drained in 1965, 1975, 1985, and 1995, so repair work could be made to the Norway Dam..It was announced that in late April 2008, Lake Shafer will be drained once again for repairs to the Norway Dam.