Click on the >>>PA Downloads Link in the Resources Menu to download these KMZs for free!
The TU CSI dataset (originally developed for the eastern US by the “Eastern Brook Trout Joint Venture”) was one of the very first this website ever published. And while it has always been useful, in truth the full index scoring was never intended for “fish finding”. Some components of the index are quite relevant to the task of figuring out where you might want to fish (e.g. population extent). However, others are really only relevant to conservation strategy and muddle the fish-finding task (e.g. future security).
We’ve now broken down the composite TU CSI index into two KMZs that depict the most relevant fish-finding aspects: one which depicts only the “habitat integrity”. The other which shows “population extent”.
Habitat Integrity (darker blue = better habitat) is calculated for all basins and is not restricted to basins supporting Brook Trout. You can think of it as a “Wild Trout” indicator.
Population Extent indicates basins which support at least some brook trout. Darker orange basins should support extensive brook trout streams; light basins support minimal brook trout, typically in isolated headwaters reaches. Both can be downloaded from the “PA Downloads” link.
Data provided by Trout Unlimited’s Conservation Success Index