WI Brook Trout Population in Danger News | December 3, 2024 | 0 | by Morgan McCarthy Brook trout populations in Wisconsin could diminish in the next 30 years. The Wisconsin DNR says the species ideal habitat is cold water streams, and projects two-thirds of streams will become too warm by 2050. A new Brook Trout Reserves program aims to keep as many fish alive as possible. More information is available WITH AN EASY CLICK HERE.