There is an electric barrier "water fence" in the Chicago Sanitary Shipping canal in Romeoville, IL. Its designed to keep the carp from entering Lake Michigan.

https://www.flickr.com/photos/usacechicago/sets/72157627138482598/with/5911792313/

https://www.lrc.usace.army.mil/Missions/Civil-Works-Projects/ANS-Portal/Barrier/

GY3 71 Demon 340