Demopolis Lock Whirlpools!

The second video with some explainations! Video of Demopolis Lock filling it’s chamber with water so a boat can be locked going upstream. These whirlpools are formed on the river that runs near Demopolis, Alabama. These are NOT naturally occurring whirlpools and instead occur because large pipes under the water suck water into the area behind me (not seen in video until I turn to walk off the bridge/platform area, it’s the place to the left) and fill it with water so boats can e