The San Bernardino Mountains are the closest thing Southern California has to real mountain trout fishing without the Sierra drive. An hour or two from the LA basin you can be standing on the shore of an alpine lake at 7,000 feet, pines all around, rainbows in front of you. The thing to understand about these mountains is elevation. The lakes sit at very different heights, and that height decides when each one fishes. Some are reliable in late winter, some do not thaw until spring, and a couple are summer-only because they freeze solid in the cold months. Here is the rundown, lowest to highest, with when to go and how to get on fish.
Keep that elevation idea front and center as you read. As a rough rule, the lower lakes fish earlier in the year, and the high ones come on in late spring and summer once the snow clears and the water warms enough to hold a plant.
Silverwood Lake
The lowest of the bunch, which makes it the earliest to fish. Silverwood is a big water at around 980 acres, sitting on the West Fork of the Mojave, and CDFW stocks it with both rainbow and brown trout. The size and depth let it fish well through the cool season, and it is a reliable spot in the days right after a plant. It is a state recreation area with ramps, so it suits boat anglers as much as bank fishermen. Work the coves and the cooler inflow areas.
Lake Gregory
Gregory is the closest mountain lake to the valley and one of the first to turn on each year. It is a tidy lake of roughly 100 acres, planted with hatchery rainbows, and it has a reputation as a dependable trout fishery from late winter on into spring. The bite slows as summer heats up, and then bass, catfish, and panfish take over. No private gas boats here, so plan on shore fishing or an electric rental. A solid early-season option when the higher lakes are still locked up.
Jenks Lake
Jenks is the family pick. A small high-elevation lake in the San Bernardino National Forest near Barton Flats, stocked with rainbows by CDFW and set up with easy, barrier-free shoreline access. No power boats, plenty of room for kids, and campgrounds right nearby make it a great overnight base. Because it sits high, it fishes from late spring once the road and water cooperate, on through fall. PowerBait and nightcrawlers off the bank near the accessible areas do the job.
Big Bear Lake
This is the headliner. Big Bear is a roughly 3,000-acre alpine reservoir that gets frequent rainbow plants from CDFW and local programs, and its depth and elevation let trout survive and grow year-round. Spring and fall are the prime windows when the water is cool and fish are shallow and active. In summer the trout pull deep, so troll the north and south ends and the water off the dam. Winter brings a genuine holdover bite, and in cold years there is even ice fishing. The dam area is a known winter producer, with anglers picking up thick two-to-four-pound rainbows on small orange and yellow jigs, and soaking inflated nightcrawlers or mice tails with garlic scent. In that clear, cold water, drop down to lighter line and it makes a real difference. There is plenty of public shoreline, several ramps, and marinas. Note that the lake is managed by the Big Bear Municipal Water District, so check current boat and access rules before you launch.
Check the mountain plants before you climb
These lakes get fish on very different schedules. Filter the live CDFW map for trout and see which San Bernardino water was stocked most recently before you make the drive up the hill.
Open the live mapGreen Valley Lake
The highest community lake on the mountain, and a true summer fishery. Green Valley is small, around 9 acres and 50 feet deep, and it sits high enough that it usually freezes over from December into February. Stocking runs May through September, from CDFW and private Eastern Sierra hatcheries, so this is where you go when the lowland lakes have baked and you want cool water and pines. No motorized boats, day-use fees apply, and it stays quiet and secluded by mountain-lake standards. Fish the bank, keep it simple, and enjoy having a real alpine lake to yourself.
A Few More Worth Knowing
Arrowbear Lake is a small 10-acre lake tucked between the bigger waters, frequently stocked with catchable trout and easy to fish. Bear Creek, below Big Bear, runs wild with brown and rainbow trout for anglers willing to hike into the canyon, a different game entirely from the put-and-take lakes. And a heads-up on access: Lake Arrowhead and nearby Grass Valley Lake are private, open only to property owners and their guests, so do not plan a trip around them unless you know someone with a key.
Match the Lake to the Month
The whole game up here is lining up elevation, season, and a fresh plant. In late winter and early spring, drop down to Gregory or Silverwood. As spring turns to summer, Big Bear and Jenks come on. By midsummer, Green Valley and the high water are your cool-weather refuge while everything below has warmed up. Whatever the month, the lake that just got a truck will out-fish the one that did not, so check the recent plants on Fish Stocking Alert, match it to the season, and head for the right elevation.