There was a news release on the Lake Yankton rotenone renovation a couple of weeks ago:
Lake Yankton Fishery Renovation Set to BeginLINCOLN – A renovation of the existing fish population in Lake Yankton, located below Gavins Point Dam, is set to occur on Sept. 10. The project includes drawing Lake Yankton’s water level down four feet and applying the chemical rotenone to eliminate the fish population.
Record Missouri River flooding in 2011 allowed undesirable fish species to enter the lake. These fish species are now dominating the fishery and have destroyed the aquatic vegetation and water quality in this popular fishing lake. Lake draw-down will begin the middle of August with the lake scheduled to start refilling immediately after the renovation. Fish species to be restocked into the lake following the renovation include bluegill, largemouth bass, black crappie, channel catfish and walleye.
The fish renovation is a joint effort among the Nebraska Game and Parks Commission; South Dakota Game, Fish and Parks; and the U.S. Army Corps of Engineers.
I did not say anything about that until now. The U.S. Army Corps of Engineers prepared a pamphlet explaining more about the project:
The news release on liberalized fishing regulations prior to the rotenone renovation can be seen HERE . If you want more information about rotenone renovations, how and why they are done, please go back and read this blog post, Rotenone Renovation .