The Mokelumne River holds steelhead, Chinook salmon, and rainbow and brown trout as it flows west from the Sierra Nevada toward California’s Central Valley. The scenery is spectacular, the aquatic insect life is rich, and the fishery — particularly the tailwater below Camanche Dam — is one of the most productive in Northern California. Here’s everything you need to know before making the trip.
About the Mokelumne River
The Mokelumne is a 95-mile river in Northern California. It rises in Stanislaus National Forest in the central Sierra Nevada mountain range, and its three branches — the North Fork, Middle Fork, and South Fork — converge before flowing into Pardee Reservoir and then Camanche Reservoir. Below Camanche Dam, the river crosses the Central Valley, picks up the Cosumnes River as its main tributary, and ultimately empties into the San Joaquin River system.
The river’s name comes from the Plains Miwok tribe: “moke” means fishnet, and the suffix “umne” means “people of.” The region around the river was originally home to the Yokuts, Miwok, and Wintun peoples. European exploration parties arrived in the late 18th century, and the first European settlement was established by around 1830. During the California Gold Rush, the Mokelumne became a major gold-producing stream, attracting large numbers of prospectors to the region.
Today the river is home to steelhead, naturally spawned and hatchery-stocked rainbow and brown trout, and Chinook salmon. Beyond fishing, it’s a popular destination for whitewater kayaking — five notable runs including Class V+ Fantasy Falls — as well as gold panning, birdwatching, and hiking in the Mokelumne Wilderness.
Best Fishing Spots
The 8-mile tailwater section directly below Camanche Dam produces some of the best steelhead fishing on the Mokelumne. Because much of this stretch flows through privately owned land, a drift boat provides the best access. Wade fishing is difficult along most of this reach, but there is a productive public section near the Mokelumne River Hatchery boat launch.
The primary public access point is the Mokelumne River Day Use Area, operated by the East Bay Municipal Utility District (EBMUD) at the base of Camanche Dam near Highway 12, approximately 15 miles east of Lodi. Note that a permit is required to access this area — permits can be purchased in advance through the EBMUD website before your visit.
For off-season fishing, the Lower Mokelumne River in San Joaquin County — below the hatchery — offers a shaded river corridor that supports a strong population of wild rainbow trout running 12 to 16 inches. Despite being Central Valley farmland, the riparian woodland here shelters a surprising diversity of wildlife: osprey, blue herons, egrets, and hawks are commonly spotted from the water.
Fish Species and Best Times to Visit
The right time to visit depends heavily on what you’re targeting.
Resident trout (rainbow and brown) are the most reliable year-round fishery. Summer is considered the most productive time for fly fishing resident trout in the river.
Steelhead smolt and half-pounders move in and out of the river periodically — primarily in early fall, then again from February through April. Mature steelhead begin arriving in January and typically run 20 to 25 inches and 6 to 8 pounds, with exceptional fish reaching 28 inches or more. Prime steelhead fishing runs from January through early spring as spawning begins.
Chinook salmon continue to use the Lower Mokelumne in the fall, supported by the hatchery program. October through December is an excellent time to observe spawning salmon from the trails at the Day Use Area.
Fly Fishing the Mokelumne
The Mokelumne has a rich aquatic insect population that rewards attentive anglers. Hatch activity includes Tricos, Pale Morning Duns, and Blue Winged Olives among the mayflies, and a strong caddisfly presence including Little Blacks, Spotted Sedges, October Caddis, and Green Sedges.
For most of the year, a double nymph rig works well — a small beadhead Pheasant Tail paired with a Bird’s Nest covers the majority of mayfly and caddisfly situations. In winter, swap your nymph dropper for an egg pattern to match what spawning steelhead are keying on.
Standard dry fly patterns that produce on the Mokelumne include Adams, Elk Hair Caddis, Blue Wing Olive, Royal Wulff, Stimulator, and Chernobyl Ant. Effective wet flies and nymphs include Pheasant Tail Nymph, BH Prince Nymph, BH Hare’s Ear, Black Zebra Midge, and Barr’s Emerger.
Recommended Gear
A 9-foot 5-weight fly rod with floating line handles the majority of fishing conditions on the Mokelumne across most of the year, working well for both dry fly and nymph presentations. In winter, when targeting the larger run of mature steelhead, stepping up to a 6-weight gives you better control of heavier flies and stronger fish. A tapered 9-foot leader with tippet in the 3X to 5X range is standard, with tippet size adjusted to match the size of fly you’re fishing.
Fishing Regulations
Regulations on the Mokelumne are designed to protect spawning runs of steelhead and salmon, and they vary by section and time of year. The core fishing season at the Day Use Area runs from January 1 through March 31, then reopens on the fourth Saturday in May through October 15. The lower river is closed from late March through mid-May to protect spawning steelhead.
A valid California fishing license is required for all anglers 16 and older — available for one day, two days, ten days, or a full year. A separate EBMUD recreation permit is also required to access the Mokelumne River Day Use Area and hatchery area, and must be obtained in advance through EBMUD’s website. Regulations are subject to change, so always verify current rules with the California Department of Fish and Wildlife before your trip.
Central Valley steelhead are listed as threatened under the Endangered Species Act — a status established in March 1998 and reaffirmed since. The EBMUD and CDFW manage the Lower Mokelumne as a steelhead fishery with this conservation status in mind, and the closed seasons are strictly enforced. Be mindful of private property when accessing the lower river outside designated public areas.
Planning Your Trip
The closest major airport is Sacramento International (SMF), roughly 50 miles west of the lower river. From Sacramento, the drive to the Camanche Dam area takes about an hour. For anglers coming from the Bay Area, the drive via I-580 and Highway 12 runs approximately 90 minutes.
There are several camping options near the river. The Mokelumne River Campground sits along the river near Pioneer, California in the upper Sierra section — a peaceful spot, though you’ll want mosquito repellent. For camping near the lower tailwater, Camanche Reservoir has a full campground with lakeside sites. If you’d prefer indoor accommodations after a full day of fishing, the Pioneer Inn & Suites in Pioneer offers clean rooms, friendly service, and an on-site seasonal pool and pub.
The Mokelumne is a strong choice if you like combining fishing with other outdoor activities. White water kayakers, hikers in the Mokelumne Wilderness, and rock climbers working the granite domes near Salt Springs Reservoir all use the same corridor. If you’re planning a broader California outdoor trip, our guide to scenic California cabin rentals covers lodging options across the state, and our road trip packing list covers the gear essentials for any extended California adventure. For fly fishers looking to explore other Western rivers, our Montana fishing trips guide and Boundary Waters beginners guide are both worth a read.
Have you fished the Mokelumne? Share your experience or favorite spots in the comments below.
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