Searching (IMAGE) Penn State Caption Penn State researchers conduct a survey of a small, headwaters stream in the mountains of northcentral Pennsylvania, searching for native brook trout. The model predicts with substantial accuracy which Appalachian Mountains streams from Maine to Georgia will hold wild trout. Credit Penn State College of Agricultural Sciences Usage Restrictions non commercial use only License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.