A trout from Mann Lake
Mann Lake is located 80 miles south of the town of Burns in the sage-covered high desert country of southeastern Oregon. Mann Lake covers more than 275 acres and has a maximum depth of 14 feet. The lake features 2 boat-launching areas (boats with motors are permitted) and 3 camping areas on the north end of the lake. The weather there is extreme and ever changing, the camping conditions are rough and the location is remote, but the early season Oregon fishing is excellent and the rugged beauty of the scenery is well worth the trip.

Mann Lake is home to an abundance of Lahontan Cutthroat trout, sub-specie of cutthroat that is the only salmonid that can survive in Mann, which is among the most alkaline of Oregon lakes. As such Mann Lake is the Oregon State repository for the Lahontan Cutthroat, and where all of the states brood stock are raised.