Colorado River Fishing Guide: Species, Spots & Seasons

Colorado River fishing delivers an unmatched diversity of opportunities across one of America’s most iconic waterways, from trophy rainbow trout in crystal-clear tailwaters to massive striped bass prowling deep desert reservoirs. You’ll find largemouth bass, smallmouth bass, channel catfish, and multiple trout species throughout this heavily managed system. The dramatic red rock canyon scenery and world-class dam structures create fishing experiences unlike anywhere else in North America.

Colorado River Fishing Quick Facts

Why Fish Colorado River?

The Colorado River system represents one of America’s most heavily managed and controversial fisheries, transformed by massive dams into a series of world-class reservoirs separated by productive tailwater sections. From famous trout waters below Glen Canyon Dam to the striper factories of Lake Powell and Lake Mead, this system offers everything from technical sight-fishing for large rainbows in gin-clear water to deep-water trolling for massive striped bass in desert canyon settings.

Trophy potential here is exceptional, with rainbow trout exceeding 20 inches, striped bass reaching 25 pounds, and largemouth bass topping 8 pounds. The dramatic scenery—towering red rock canyons, massive dam structures, and vast desert reservoirs—creates fishing trips that combine serious angling with breathtaking landscapes found nowhere else.

Top Species in Colorado River

This diverse system supports both coldwater and warmwater fisheries depending on location and dam influence.

Striped Bass

Striped bass dominate the deep reservoir sections, particularly Lake Powell and Lake Mead, where they patrol main channels and submerged humps in 40-80 feet of water. These aggressive predators reach 25 pounds in Colorado River waters and feed heavily on shad throughout the system. Focus on trolling large spoons along steep canyon walls during spring and fall, or vertical jig deep points when you locate schools on your electronics.

Rainbow Trout

The Glen Canyon Dam tailrace produces some of the finest rainbow trout fishing in the West, with fish exceeding 20 inches in water that maintains a constant 46-degree temperature year-round. These trout hold in deep pools reaching 35 feet and feed aggressively in the eddies below the dam structure. Fly fishing guides target these waters with streamers and nymphs, while bait anglers score consistently with PowerBait fished near the bottom.

Largemouth Bass

Largemouth bass thrive in the warmer reservoir sections, particularly Lake Mead, where they relate to rocky points and coves in 15-40 feet of water. These bass reach 8 pounds in Colorado River waters and provide excellent action from spring through fall. Target them with crankbaits along drop-offs or flip soft plastics into shoreline cover during the cooler morning and evening hours.

Channel Catfish

Channel catfish populate the entire Colorado River system, with fish to 15 pounds available in the deeper holes below dam structures. These reliable fighters bite year-round and respond well to cut bait and nightcrawlers fished on bottom rigs. The Imperial Dam and Laguna Dam areas offer particularly productive catfish habitat with accessible bank fishing opportunities.

Smallmouth Bass

Smallmouth bass to 5 pounds inhabit the rockier sections of Colorado River reservoirs, preferring steeper banks and boulder-strewn points. They provide exciting light-tackle action on tubes and grubs worked along drop-offs. Spring and fall offer the best smallmouth fishing when these aggressive bass move shallow to feed.

Other Species

Anglers also encounter black crappie, bluegill, green sunfish, and carp throughout the system. These species provide additional opportunities, particularly for anglers fishing from shore or targeting panfish for the dinner table.

Best Fishing Spots in Colorado River

• Glen Canyon Dam Tailrace: This premier trout water offers 8-12 foot visibility and consistent 46-degree temps that create ideal conditions for trophy rainbows. Deep pools reaching 35 feet hold large fish that respond to PowerBait and streamers drifted through the eddies below the dam structure. The technical nature of this fishery rewards patient anglers with shots at 20-inch-plus trout.
• Lake Powell: This massive reservoir features depths exceeding 180 feet and produces excellent striped bass fishing throughout its main channels. Focus your efforts on points and submerged humps in 40-80 feet of water, trolling large spoons along the steep canyon walls. The sheer size and dramatic scenery make Lake Powell fishing trips truly memorable experiences.
• Lake Mead: The lower reservoir system provides better bass fishing opportunities than upstream waters, with productive rocky points and coves in 15-40 feet of water. Heavy fishing pressure near Las Vegas area marinas means you’ll want to explore more distant coves for less pressured fish. Both largemouth and smallmouth bass thrive in these desert reservoir waters.
• Imperial Dam: This productive warm water fishery below the dam structure holds good populations of catfish and bass in holes ranging 10-25 feet deep. Accessible bank fishing from both California and Arizona sides makes this spot popular with shore anglers. The tailwater section concentrates fish below the dam where they feed in the current.
• Laguna Dam: The tailwater section here supports mixed warm and cool water species, with deeper pools of 8-20 feet holding various gamefish. Good striped bass fishing develops during winter months when dropping water temps trigger feeding activity. Focus on the deeper holes where fish congregate in the slower current.

Best Times to Fish

The fishing season peaks from March through November when weather conditions are most favorable and fish activity reaches its highest levels. Spring brings excellent trout fishing in tailwaters as water temps stabilize, while striped bass begin moving shallow for spawning throughout the reservoir system. Fall produces outstanding action as water temps drop and stripers feed aggressively preparing for winter.

Summer fishing can be challenging due to extreme heat, but early morning and evening trips remain productive if you focus on deep water and tailrace areas where cooler temps concentrate fish. Winter sees reduced activity in most areas, though tailwater trout fishing stays consistent and the waters are much less crowded for anglers willing to brave cold weather conditions.

How to Fish This Region

Reservoir fishing dominates Colorado River angling, with boat access essential for reaching the most productive waters in Lake Powell and Lake Mead. You’ll need electronics to locate striped bass schools suspended over deep structure, then position your boat to troll or vertically jig these concentrations. Multiple boat ramps provide access throughout both reservoir systems.

Dam tailrace fishing offers a completely different experience, particularly below Glen Canyon Dam where wading anglers work the eddies and pools for trophy rainbow trout. Fly fishing guides operate in these areas, or you can access productive waters from shore using spinning gear and bait. The consistent water temps and flows create reliable fishing year-round.

Bank fishing opportunities exist at various points along the system, particularly near dam structures where fish concentrate in accessible areas. The Imperial Dam and Laguna Dam sections provide good shore access for catfish and bass anglers. Deep water fishing techniques work best in the reservoir sections, while current-oriented presentations produce in tailrace areas.

Best Techniques and Baits

Match your approach to the specific water type you’re fishing for consistent success.

Trolling Large Spoons and Crankbaits

This technique dominates striped bass fishing in the deep channels of Lake Powell and Lake Mead where fish suspend along canyon walls and over submerged structure. Run multiple lines at varying depths from 40-80 feet to locate active schools. Large chrome spoons and deep-diving crankbaits that mimic shad produce the most consistent strikes from these aggressive predators.

Vertical Jigging

Once you locate striped bass or other species on your electronics, vertical jigging with heavy spoons and swimbaits becomes deadly effective along dam faces and drop-offs. Drop your jig to the depth where fish are holding, then work it with sharp upward snaps followed by controlled drops. This presentation triggers reaction strikes from bass, stripers, and other gamefish suspended in deep water.

Drifting Live Anchovies and Cut Bait

In tailrace currents below dams, drifting live anchovies or cut bait produces excellent results for striped bass and catfish that hold in the moving water. Use enough weight to keep your bait near bottom while allowing it to move naturally with the current. This technique works particularly well in the deeper pools where fish concentrate to feed.

Fly Fishing Streamers

Below Glen Canyon Dam, fly fishing guides work streamers through the clear, cold water for trophy rainbow trout that feed aggressively on baitfish. Cast woolly buggers and other large patterns into eddies and deep runs, then strip them back with erratic retrieves. The gin-clear water and technical nature of this fishery make it a premier destination for serious fly anglers.

Bottom Fishing with Nightcrawlers and PowerBait

From rocky banks throughout the system, bottom fishing with nightcrawlers and PowerBait produces consistent catches of catfish, trout, and various panfish. Use slip-sinker rigs that allow fish to take line without feeling resistance. This straightforward approach works year-round and requires minimal specialized gear.

Tackle & Gear Recommendations

Colorado River Fishing Charters vs DIY

Fishing Charters

Charter availability is limited along the Colorado River system, mainly concentrated around Lake Powell and Lake Mead where half-day striper trips range from $400-600 for groups. A few specialized fly fishing guides operate below Glen Canyon Dam at $500-plus per day, focusing on trophy trout in the tailrace section. Most fishing charters provide all tackle and electronics, making them valuable for first-time visitors unfamiliar with these vast waters.

DIY Fishing

Most anglers fish independently due to accessible boat ramps and straightforward techniques throughout the Colorado River system. You can launch your own boat at multiple locations on both Lake Powell and Lake Mead, or fish from shore at various dam tailrace areas. Bank fishing access exists at Imperial Dam and Laguna Dam for anglers without boats.

Planning Your Trip

• Best Time to Visit: March through May or September through November offer the best combination of weather conditions and fish activity for Colorado River fishing trips.
• What to Bring: Electronics for locating fish in deep water, appropriate tackle for your target species, sun protection for desert conditions, and plenty of water for hot weather trips.
• Access: Multiple boat ramps serve Lake Powell and Lake Mead, shore access available at dam tailrace sections, fishing charters operate from major marinas on both reservoirs.
• Pro Tip: Focus your efforts during early morning and late evening hours in summer when extreme heat makes midday fishing uncomfortable and less productive throughout the system.

Frequently Asked Questions