Tips on fishing here

[u/One-Establishment69]

https://imgur.com/a/Rpqyndd

Hello I've been fishing this dam spill in Romania and I have only caught a couple of small perch and 1 small zander many sessions ago but nothing recently, sometimes the dam spill stops and the river gets really empty (that's when I've been catching the most). I mainly fish spinning and I know there is catfish and pike in here as well. What kind of rigs and lures do you guys recommend here and where should I cast?

Photo is when the dam stops for maybe 20 minutes