When I built my lake in early 19 I had a lot of timber and brush piles in the back end flood over because the pond filled waaay faster then I thought it would, I figured I would have close to a yr to remove it but the pond filled up in 6 months, wet yr.

Long story short, I wound up with a lot of tannins in the water for several yrs, water was real brown, low viability. It didn't seem to hurt anything and the fish seemed to be fine, I stocked it just like normal recommendations, it has since then cleared up a good bit, granted it has a good bit of water going thru it, about 120 Acres of runoff in a 15 surface acre lake, but it has not had much runoff at all for the past 12 to 14 months, and its as clear as Ive seen it.

Every body told me I would have a ton of problems with it, to the point of 1 guy tell me, under similar situation in his pond, he wound up having to completely drain his lake and remove the oaks. Mine was all oaks, tree tops from logging and firewood, including a lot of standing oak timber, in the back shallower coves.

I consider myself to have gotten lucky to not have any residual problems from it, I have had several very knowledgeable people say I would have but so far so good.
by the time I was told it would be a problem it was too late, the pond was already full and I had added a lot of dollars worth of stocking fish, I was prepared for the worst but its been ok. visibility currently is probably 3 to 4 ft.

Good Luck!

All the really good ideas I've ever had came to me while I was milking a cow.