Every two years, ODFW plants over 300,000 fingerling fish in hundreds of Cascade lakes from Mt. Hood to Klamath Falls. Additional fish are dropped in the alpine lakes of the Eagle Cap Wilderness in the Wallowa Mountains -- including Lake Legore, Oregon’s highest lake at 8,950 feet.
The 2.5- to 3-inch fingerlings are transported mostly by helicopter in a custom made shuttle carrying 30 individual canisters that hold a few gallons of water and up to 1,000 fingerling trout. The canisters are opened individually by remote control from inside the cockpit while the chopper hovers over a lake.
Biologists like to use three-inch, juvenile fish because they can load more of them onto the aircraft and make the 100 ft. fall to the lake with less trauma than larger fish – 95 percent of the little fish survive the long freefall into the lake.
Depending on conditions, trout planted as fingerlings can reach keeper size (8-inches) in two years.