Au Sable River Fishing Guide: Species, Spots & Seasons

The Au Sable River in Michigan stands as one of the Midwest’s premier trout fishing destinations, offering 240 miles of cold, clear water that consistently produces trophy brown trout, rainbow trout, and steelhead. This Blue Ribbon fishery and National Wild and Scenic River draws anglers from across the country with its legendary evening hatches and healthy populations of wild trout. Spring-fed tributaries maintain ideal temperatures year-round, creating world-class fishing opportunities that have remained excellent for decades.

Au Sable River Fishing Quick Facts

Why Fish Au Sable River?

The Au Sable River represents Michigan’s most celebrated trout stream, designated as both a Blue Ribbon fishery and National Wild and Scenic River. Famous for its evening Brown Drake hatches that draw fly fishing enthusiasts from across the Midwest, this river system combines spring-fed flows with diverse habitat ranging from wilderness headwaters to larger impoundments. Strict regulations protecting wild trout populations have created consistently excellent angling opportunities that rival any trout water in North America.

Trophy potential here includes brown trout to 8 pounds, steelhead to 12 pounds during spring runs, rainbow trout to 5 pounds, and brook trout to 3 pounds in headwater sections. The combination of excellent water clarity, moderate current with deep holes below log jams, and consistent temperatures makes the Au Sable River fishing experience productive throughout the season. Anglers regularly catch multiple fish species during a single fishing trip on these Michigan waters.

Top Species in Au Sable River

The Au Sable River supports exceptional populations of cold water game fish across its 240-mile system.

Brown Trout

Brown trout dominate the Au Sable River fishery, with fish reaching 8 pounds in the deeper impoundments and tailwater sections. These fish hold along undercut banks, beneath fallen timber, and in deep pools throughout the system. Target browns with streamers swung along structure during low-light periods, or dead-drift nymphs through runs during midday when fish are less active.

Steelhead

Steelhead run the Au Sable River system each spring, with fish to 12 pounds entering from Lake Huron during April when water temperatures rise. These powerful fish concentrate in the lower river sections and major tributaries during peak migration periods. Bottom bouncing spawn bags through gravel runs produces consistent catches, while swinging streamers attracts aggressive steelhead holding in deeper pools.

Rainbow Trout

Rainbow trout to 5 pounds thrive throughout the Au Sable River, particularly in sections with moderate current and gravel substrate. These fish respond aggressively to dry flies during evening hatches and readily take nymphs drifted along seams. Rainbows often hold in faster water than browns, making them excellent targets for anglers wade fishing the riffles and runs.

Brook Trout

Brook trout to 3 pounds inhabit the spring-fed headwater sections and smaller tributaries of the Au Sable River system. These beautiful fish prefer cold, well-oxygenated water with plenty of overhead cover from fallen logs and overhanging vegetation. Small spinners, dry flies like Adams patterns, and carefully drifted nymphs all produce brook trout in these pristine upstream waters.

Other Species

The Au Sable River also supports populations of smallmouth bass, northern pike, walleye, and various panfish species in the warmer impoundment sections. These species provide additional fishing opportunities when targeting trout becomes challenging during summer’s warmest periods.

Best Fishing Spots in Au Sable River

• Foote Dam Pond: This deep impoundment holds large brown trout that feed aggressively where current enters from upstream. Fish depths of 8-15 feet with streamers and deep nymphs, focusing on the inlet area where oxygen levels remain high. The pond consistently produces trophy-class browns throughout the fishing season.
• Mio Pond: This popular section offers excellent access and productive evening dry fly fishing across channels and drop-offs. Wade carefully due to soft bottom conditions, but expect good catches of both brown and rainbow trout. The best fishing occurs during evening hatches when trout move into shallow water to feed on emerging insects.
• McKinley Trail Access: This classic river stretch features deep pools and fallen timber that create ideal trout habitat. Wade upstream from the launch to reach prime brook trout water in headwater sections. The combination of structure and cold water makes this access point productive throughout the season.
• Wakeley Bridge: Easy access with parking makes this spot ideal for anglers new to Au Sable River fishing. Fish both upstream and downstream to target a good mix of browns and rainbows holding near downed trees. The excellent structure from fallen timber concentrates fish and provides consistent action.
• Alcona Dam Pond: The tailwater section below this dam holds large trout year-round in pools reaching 10 feet deep. Restricted to flies and lures only, this area provides consistent fishing opportunities even during challenging conditions. Deep pools maintain stable temperatures that keep trout active throughout all seasons.

Best Times to Fish

The best time to fish the Au Sable River runs from April through October, with peak fishing during spring steelhead runs and summer dry fly season. June brings the famous Hex hatches that create incredible evening fishing opportunities, while July features prolific Brown Drake emergences. Fall fishing excels as temperatures cool and brown trout become aggressive before spawning, with fewer anglers on the water creating ideal conditions.

Weather considerations significantly impact Au Sable River fishing success, with stable conditions producing the most consistent catches. Early morning and evening hours provide the best fishing during summer when water temperatures peak, while midday fishing improves during cooler spring and fall periods. Overcast days often trigger extended feeding periods throughout the day across all fishing spots.

How to Fish This Region

Wade fishing represents the primary approach for most Au Sable River anglers, allowing access to productive runs, pools, and structure throughout the system. The river averages 2-6 feet deep with pools to 12 feet, making wading practical in most sections during normal flows. Felt-soled boots provide the best traction on the sandy bottom, and a wading staff helps navigate deeper holes and faster current.

Drift boat fishing offers excellent coverage of longer river stretches, particularly during spring when higher water limits wading access. Local fishing guides specialize in drift boat trips that cover several miles of prime water, positioning anglers for optimal presentations to holding fish. This approach works especially well for streamer fishing and reaching spots that receive less pressure from wade anglers.

Kayak fishing provides a quiet, affordable alternative for exploring the Au Sable River system independently. Launching from public access points allows anglers to cover significant water while maintaining the stealth needed for spooky trout in clear conditions. Bank fishing remains productive at access points like Wakeley Bridge and below the various dams where deeper water holds concentrations of fish.

Best Techniques and Baits

Matching your presentation to current conditions and seasonal patterns dramatically improves success on Au Sable River fishing trips.

Dead-drifting Nymphs

Dead-drifting nymphs through deep pools and runs produces consistent catches throughout the fishing season on the Au Sable River. Use weighted patterns or split shot to reach the bottom where trout hold, and employ strike indicators to detect subtle takes. Focus on seams where faster current meets slower water, and thoroughly cover all promising structure with multiple drifts.

Swinging Streamers

Swinging streamers along undercut banks and through deep pools triggers aggressive strikes from large brown trout, particularly during low-light periods. Cast across and slightly downstream, allowing the current to swing your fly along likely holding areas. This technique excels during fall when browns become territorial before spawning, and early morning or evening throughout summer.

Dry Fly Fishing During Hatches

Dry fly fishing during evening hatches using Adams and Brown Drakes represents the pinnacle of Au Sable River angling. Match the hatch precisely during prolific emergences like the June Hex hatch, when trout feed selectively on specific insect stages. Present flies with drag-free drifts, and focus on rising fish rather than blind casting to maximize your catch rate.

Bottom Bouncing Spawn Bags

Bottom bouncing spawn bags in gravel runs produces excellent results during spring steelhead runs on the lower Au Sable River. Use just enough weight to maintain bottom contact while allowing natural movement with the current. This technique works best in the lower sections and tributaries where steelhead concentrate during their April migration from Lake Huron.

Casting Small Spinners and Spoons

Casting small spinners and spoons to structure provides an effective approach for anglers who prefer hardware over flies. Size 0-2 spinners in silver, gold, or copper patterns catch all trout species, particularly in the impoundment sections. Work these lures along drop-offs, around fallen timber, and through deeper channels where fish hold throughout the day.

Tackle & Gear Recommendations

Au Sable River Fishing Charters vs DIY

Fishing Charters

While the Au Sable River doesn’t support traditional boat charters, experienced local fly fishing guides offer exceptional wade trips and drift boat excursions throughout the system. Rates typically range from $300-500 per day, with guides providing all tackle, instruction, and insider knowledge of current conditions. Several outfitters in the Grayling and Mio areas specialize in Au Sable River fishing trips, offering both full-day and half-day options for anglers of all skill levels.

DIY Fishing

DIY fishing on the Au Sable River offers excellent opportunities with numerous public access points providing shore and wade access. Launches at Wakeley Bridge, McKinley Trail, and other locations allow kayak anglers to explore the system independently. The combination of good access, clear fishing regulations, and abundant public water makes self-guided Au Sable River fishing trips highly productive for prepared anglers.

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Planning Your Trip

• Best Time to Visit: Plan your Au Sable River fishing adventure between April and October, with June through September offering peak conditions for dry fly fishing and consistent trout action across all sections.
• What to Bring: Pack waders, felt-soled boots, fly rods (4-6 weight for trout, 7-8 weight for steelhead), assorted flies matching seasonal hatches, polarized sunglasses, and a Michigan fishing license with trout stamp.
• Access: Multiple public access points including Foote Dam Pond, Mio Pond, Wakeley Bridge, McKinley Trail, and Alcona Dam Pond provide excellent wade fishing, kayak launches, and opportunities to book local fishing guides for drift boat trips.
• Pro Tip: Time your visit to coincide with the legendary Hex hatch in late June or Brown Drake emergence in July for unforgettable evening dry fly fishing when trophy brown trout feed aggressively on the surface.

Frequently Asked Questions