Eastern Sierra Fishing
The lakes and streams of the High Sierra as well as the Owens Valley have the primary element of good trout habitat in abundance: cold, well-oxygenated, unpolluted water. The principal trout of the High Sierra brook, rainbow, brown and golden. Due to planting, brook and rainbow are more common. Although brown and golden are un the minority overall, they can be the majority in some lakes and streams. 
From Bishop to Bridgeport, fishermen can choose from numerous lakes, rivers and creeks. These include some of the state's premier wild trout waters and even more put-and-take fisheries where the Department of Fish and Game stocks a healthy population of catchable-size trout. Regardless of what kind of fishing you prefer, anglers should always consult the DFG regulations and observe all sign postings to conform to the regulations wherever they decide to fish.
Key Fishing Spots
Check out www.easternsierrafishing.com for a great overview of fishing hot spots.
Find Mammoth area fishing locations courtesy of The Trout Fitter, a local retailer.
Bishop Area
Owens River Gorge (15 miles from Bishop)
For flies, try sizes 16s - 22s. Almost any fly you want to use. Try dries and midges. For dries try using a stimulator pattern or an elk hair caddis. Late evening fishing has been the best.
Pleasant Valley Reservoir (6 miles from Bishop)
Good fishing for trout and perch. Trout have been hitting on Gulp power bait and night clawlers. Thomas bouyant lures and castmasters. For flies, try dragon streamers, wooley buggers, and midge patterns.
Lower Owens River Wild Trout Section (2 miles from Bishop)
Water flows are about 328 cfs. Fishing this stretch has been pretty good. Flows are high. Mainly nymphing. WD40s, pheasant tails, tiger midges. 18s & 20s. Towards the campground there are a lot of open areas to access the river.
Lower Owens River (runs a few miles north & east of Bishop)
Water flows are about 328 cfs above Bishop Creek. Lures and flies have been pretty good. Caddis activity in the evening has been pretty good. Temperatures have been real nice. Fall colors will begin descending into the Owens Valley, soon.
Crowley Lake (About 30 minutes north of Bishop)
Fishing at Crowley Lake is now closed for the winter season.
Upper Owens River (About 40 minutes north of Bishop)
Doing very well. Mainly with nymphing, pheasant tails, hare’s ears, and tiger midges, sizes 16s & 18s. Starting October 1st, from Benton Cross
Lone Pine Area
Diaz Lake is located on the northern edge of the Mojave Desert at an elevation of 3,700 feet above sea level and three miles south of Lone Pine, California. The lake was naturally formed by the earthquake of 1872 when 18 miles of the Owens Valley floor dropped some 20 feet. The winter and spring months of October through May 15 offer excellent fishing for rain bow trout, bass and catfish.