Quick reference

Field Value
State / region California, Sacramento Valley from Redding downstream toward Red Bluff
Species Wild rainbow trout, seasonal steelhead and Chinook salmon, striped bass in the lower river
Best months Late March–May and late September–October; trout fishing holds up year-round
Water type Tailwater below Shasta and Keswick Dams
Difficulty Intermediate — the fishing methods are approachable, but the size and power of the water demand boat skills or careful wading
Wading Limited to a few bars and edges; slick cobble requires studded boots and a staff. Most anglers fish from drift boats

Why fish here

The Lower Sacramento is a big tailwater that begins below Shasta and Keswick Dams and flows through Redding toward Red Bluff. It is one of California's most consistent big-river trout fisheries: regulated flows and stable temperatures keep it producing twelve months a year, and guides note it is only truly unfishable during extreme flood events. The wild rainbows here are often measured in pounds rather than inches, fattened by rich insect life and the egg drift that comes with salmon and steelhead runs.

The angling case is density plus size. Wild rainbows commonly run 16–20 inches with larger fish present, and the river's slow gradient and long riffle-run structure suit indicator nymphing with double-nymph rigs — a method that produces high numbers of quality trout when bugs or salmon eggs are in the drift. Prolific caddis, mayfly, and stonefly hatches give the fishery a real seasonal rhythm, and the October–December Chinook egg-drop creates some of the best big-fish nymphing of the year.

Understand what kind of river this is before you plan: the channel runs hundreds of feet wide, much of the bank is private, and depth and current keep wading to a handful of accessible bars. This is a drift-boat fishery first, which is why guided floats out of Redding dominate the traffic. DIY anglers can make it work from parks and public greenbelt in town, but the river rewards a boat.

The river, section by section

Keswick Dam to Posse Grounds (upper Redding reach)

Access: Boat access below Keswick Dam; Posse Grounds Park in Redding via Highway 44 and local streets. The Keswick-to-Posse-Grounds run is the reach most often described for upper-river wade fishing. Character: Slow overall gradient but strong, even currents in a very large channel — classic big-river riffle and run water with few pools. Slick cobble bottom; studded boots and a staff where wading is possible at all. Species mix: Wild rainbows feeding on insects and salmon eggs; seasonal Chinook and some steelhead add egg-drop opportunities and occasional incidental hookups. Crowding: The most popular guided reach. Boat traffic runs moderate to heavy on spring and fall weekends and through the October–December egg-drop; weekdays are lighter. Notable hatches: BWOs and March Browns in March–April; PMDs in May–June; golden stones, salmonflies, and little yellow stones April–June; strong caddis March–June and again in summer; October Caddis August–October, best at low light.

This is the coldest, most dam-influenced water on the river and the natural starting point for a first trip. Most fishing is from drift boats; the wadeable bars and edges near town are limited but real, and they concentrate the DIY pressure.

Posse Grounds to Anderson / Balls Ferry

Access: Posse Grounds Park boat ramp with drift access downstream toward Anderson — commonly run as the Highway 44 to Balls Ferry/Anderson float. Shore access is limited to a few parks and pull-outs. Character: Very slow gradient, long even runs, subtle riffles, and deep buckets where most trout hold in 5–8 feet of water. Wading is difficult due to depth and pushy main-river currents; this is drift-boat water. Species mix: Wild rainbows in numbers, plus fall Chinook using the corridor to spawn — significant egg drift for trout — with some steelhead and occasional striped bass seasonally. Crowding: High-value drift water with steady guide pressure; moderate crowds on spring and fall weekends and through the September–December egg-drop, lighter midweek and in summer. Notable hatches: BWOs and March Browns in early spring; PMDs and spring caddis April–June; Hydropsyche caddis, salmonflies, and golden/yellow stones June–September; October Caddis into fall; midges year-round with mixed caddis on low-light evenings.

Reading this water is the skill that separates good days from great ones. The fish stack on smaller riffles, ledges, drop-offs, fallen trees, and current breaks — inside bends and the downstream sides of islands — rather than spreading evenly through the long flat runs. Indicator nymphing dominates, with rig depth matched to those 5–8 foot buckets.

Anderson to Red Bluff (lower valley reach)

Access: Boat-based, from established ramps near Anderson downstream toward Red Bluff. Fewer documented shore access points than the Redding area; guides float it regularly. Character: Big valley tailwater turning more lowland in character — long slow runs, broad flats, and deep main-channel slots. Soft edges, back eddies, and inside bends become the productive water, especially when flows come up. Wading is confined mostly to side channels and bars. Species mix: Wild rainbows plus more regular seasonal Chinook and steelhead, and some warmwater species including stripers in the lower river. Crowding: Generally the least crowded water, though guide traffic builds during prime salmon, egg-drop, and steelhead windows. Many summer and winter days see light pressure. Notable hatches: The same insect community as upstream, but fishing here is driven more by eggs, attractor nymphs, and general caddis/mayfly activity than precise hatch matching — caddis and mayflies March–August, eggs and larger nymphs September–February.

This reach earns a place on longer trips and during the fall migratory season, when swung streamers and egg rigs from a drift boat cover the mixed trout, salmon, and steelhead water. Trout fishing stays strong wherever flows and clarity cooperate, particularly around spawning gravel.

Hatches and seasons

Months Hatches Flies
Jan–Feb Midges, small Baetis/BWOs; occasional winter caddis on mild days Zebra Midge (18–22), small Baetis nymphs (16–18), BWO dry (18), Parachute Adams (16–18), micro-midge emergers (20–22)
Mar–Apr BWOs, March Browns, early PMDs, spring caddis; first stoneflies BWO dries (16–18), March Brown dries (12–14), PMD emergers (14–16), Elk Hair Caddis (14–16), Pheasant Tail (14–18), Prince Nymph (12–16), Copper John (14–16)
May–Jun PMDs, continued BWOs, strong caddis, golden stones, salmonflies, little yellow stones PMD dry/nymph (14–16), micro-nymphs (16–18), Elk Hair and Goddard Caddis (12–16), Poxyback Golden Stone (14–16), Stimulator (8–10), Little Yellow Stone dries (14–16)
Jul–Sep Hydropsyche caddis, PMDs, BWOs, small mayflies; big stones into early summer; October Caddis from late August Tan/olive caddis dries (12–16), Fox Poopah (14–16), Birds Nest (14–18), Stimulator (8–10), PMD/BWO parachutes (14–18), October Caddis dry (8–10) late
Oct–Dec October Caddis, mixed caddis, BWOs; heavy egg drift from spawning Chinook October Caddis nymph/dry (8–10), Amber Prince (14–16), gold/black Copper John (14–16), Glo Bug eggs, Brown Rubber Legs (8), BWO (18), midges (20–22)
Season Top patterns Why
Spring BWO parachutes (16–18), March Brown dries (12–14), PMD emergers (14–16), Elk Hair Caddis (14–16), Pheasant Tail and Micro Mayfly nymphs (14–18), Prince Nymph and Copper John (12–16), TS Bugger and Red Headed Leech streamers Dense mayfly and caddis activity plus early stones — small-to-medium imitations match BWOs, March Browns, PMDs, and spring caddis, while general nymphs and leeches cover non-hatch feeding in high, cold flows
Summer Elk Hair and Goddard Caddis (12–16), Fox Poopah and Birds Nest (14–16), Stimulator (8–10), PMD/BWO parachutes (14–18), October Caddis dry (8–10) late, Copper John and Prince attractor nymphs Caddis and mixed mayflies dominate, with residual big stoneflies and early October Caddis; caddis dries and pupae excel in evening runs, attractors cover searching situations in stable low flows
Fall Glo Bug egg patterns, October Caddis nymphs and dries (8–10), Amber Prince (14–16), Copper Johns (14–16), Brown Rubber Legs (8), Baetis dries/nymphs (18), midges (20–22) Chinook spawning puts trout on eggs and large nymphs; October Caddis and BWOs add hatch windows, while small mayflies and midges handle selective fish in cooling water
Winter Zebra Midges (18–22), small Baetis/BWO nymphs (16–18), Parachute Adams and BWO dries (16–18) on mild days, weighted Pheasant Tails (16–18), small streamers and sculpins Winter bugs are midges and small Baetis — tiny nymphs and emergers in deep seams and tailouts, small dries for occasional risers, streamers for larger trout when insects are sparse

Gear notes

For trout, a 9-foot 5- or 6-weight with a weight-forward floating line is standard — favor the 6-weight for the sheer size of the water and the heavy indicator rigs fished from drift boats. Run 9–12 foot leaders tapered to 3X–5X for most nymph and dry-dropper work, dropping to 6–7X for midges and Baetis and beefing up to 2X–4X for larger nymphs and streamers. Steelhead and salmon call for a 9-foot 6–8 weight with sink-tip or shooting head, or a two-hander with a Scandi tip for swinging. If you plan to wade at all, studded-sole boots and a wading staff are non-negotiable on this slick cobble — and many regulars skip wading entirely and fish from the boat.

Logistics

  • Regulations: Managed by the California Department of Fish and Wildlife (CDFW); a California sport fishing license is required for anglers 16 and older. On the Keswick Dam to Highway 44/Balls Ferry reach, barbless hooks are required year-round and the trout limit is two fish with a 16-inch minimum. Seasonal closures may apply October–December to protect spawning Chinook, and some reaches or periods run catch-and-release. Regulations change frequently around endangered salmon protections — check current CDFW rules and closures before every trip.
  • Access points:
    • Keswick Dam — primary upper put-in for drift trips, used mainly by guides with boats
    • Posse Grounds Park, Redding — major boat ramp and the reference point for the upper wade/drift reach, with limited shore access and parking
    • Anderson area boat ramps — mid-river put-ins and take-outs for floats between Redding and the lower valley
    • Red Bluff area ramps — access for lower-valley drifts targeting mixed trout, salmon, and steelhead water
  • Closest fly shop: Off the Hook Fly Fishing (guide service), Fairfield
  • Nearest towns: Redding, Anderson, Red Bluff
  • Closest gauge: USGS 11370500 — Sacramento R a Keswick CA

When NOT to fish here

Extreme flood events are the one condition that shuts this river down — when flows go very high and dirty, current breaks disappear, soft edges wash out, and the river becomes unsafe as well as unproductive. Avoid major runoff periods and emergency dam releases. Also plan around the fall regulatory calendar: salmon spawning closures from October into December can put key reaches off limits to trout fishing entirely, so confirm which sections are open before building a trip around the egg-drop.

Where to fish next

  • Fly Fishing in California — the full state guide
  • Upper Sacramento River — the wade-friendly freestone counterpart above Shasta Lake, a natural pairing for a Redding trip
  • McCloud River — the storied wild-rainbow stream in the canyon country northeast of Redding