Many years ago there was a 5 fish limit but no size limit. Then it went to 5 fish limit 15 inches minimum. Now the current slot limit. Not sure when they changed them.
The algae has gotten worse over the years but recently I think it is a little better. The problem I think is from farm run off of fertilizer. Also cranberry producers have very, very little regulation do to some laws passed many, many years ago and can run fertilizer/pesticides down stream which ends up in the Wisconsin River.
There is a group/association called PACRS that is trying help with managing Castle Rock and Petenwell water quality.
At one time the DNR was harvesting walleye eggs for hatching and stocking elsewhere.
Personally I think there should be some protection on walleyes during the spawn. It gets fished heavy right now below the dams because of the No Closed Season on eyes.
The water level can only vary about 1 foot approximately from May 1st to November 15th. Not sure on those exact dates.
Lots of pleasure boat traffic in the summer that makes it difficult to fish on the weekends. It needs more Sheriff/DNR enforcement in summer. Usually a few boating accidents on CR in the summer. Personally I would like to see a NO WAKE ZONE North of the County G boat landing in Juneau County.
