Thanks for your feedback. My handwriting isnt the best, however sticking with the limitation I set for myself doing it all by hand I tried my best to make it readable.
The mechanism raises gates from the bottom of the sea that block off the arches of the trident, there by stopping the tide from entering the bay and reversing the flow of water. Instead the water raises up along the outside of the trident. Exactly how it works is only known by the dwarven and gnomish engineers that built it.
I hope you still found it entertaining