What Big River Lake offers anglers

Big River Lake sits in the Lake and Peninsula Borough, roughly 30 miles northeast of Dillingham, and holds a solid population of rainbow trout and Dolly Varden char. The lake runs about 12 miles long and drains into the Big River system, which eventually reaches the Nushagak River. Access is by floatplane only — there are no roads to the lake, and no developed facilities on the shore. The water is cold and clear, and the surrounding country is open tundra and low brush, which means you'll fish in daylight for much of the summer and see weather coming from a long way off.

The rainbow trout here average 14 to 18 inches, with fish to 24 inches possible if you're patient and fishing the deeper holes. Dolly Varden run smaller, usually 10 to 14 inches, but they're aggressive and abundant. The lake has no inlet streams of consequence, so the trout and char rely on the lake's own productivity. Summer water temperatures stay cool enough to keep the fish active all day, unlike some lower-elevation lakes in the region that see midday slowdowns.

Key Takeaways

  • Big River Lake is accessible only by floatplane from Dillingham, and you'll need to arrange transportation through an air taxi service before you book your trip.
  • Rainbow trout average 14 to 18 inches, with Dolly Varden char also present and more abundant in the shallower water near the outlet.
  • The lake sits on open tundra with no developed lodges or camps, so you'll need to bring a tent, stove, and all food and gear for your stay.
  • Summer weather can change rapidly, and the lake can be windy; plan for layered clothing and a sturdy boat or raft to move safely across the water.

Getting to Big River Lake

Dillingham is your jumping-off point. The town sits on the Bristol Bay coast and has a regional airport served by Alaska Airlines from Anchorage. From Dillingham, you'll hire a floatplane to reach the lake — the flight takes roughly 45 minutes to an hour depending on weather and which part of the lake you're headed to. Air taxi services in Dillingham include Raven Air and Nushagak Air, both of which operate regularly to remote lakes in the borough. Expect to pay between $400 and $600 per person for a round-trip flight, though prices vary by fuel costs and the exact landing spot.

Book your air taxi well in advance, especially if you're traveling in July or August when demand is highest. Weather delays are common in Southwest Alaska — fog, wind, and low clouds can ground planes for a day or more. Build extra days into your schedule if you have a fixed return date. Most air taxi operators will work with you to reschedule if weather prevents your pickup, but you'll need flexibility.

What to bring and how to camp

There are no cabins or shelters at Big River Lake, so you'll camp on the shore. Bring a three-season tent rated for wind — the lake sits on open tundra with little windbreak, and summer storms can be fierce. A quality sleeping bag rated to 30°F is essential; even in July, nights cool to the 40s. Pack a camp stove and fuel; there's no firewood, and open fires are not practical on tundra. Bring all your food, water treatment (the lake water is safe to drink after filtering or boiling), and a first-aid kit with any personal medications.

A small raft or inflatable boat is nearly essential for reaching the best water. The lake is large enough that shore fishing alone will limit your options. A 10-foot raft with oars or a small electric motor works well. If you're flying in with gear, confirm weight limits with your air taxi — floatplanes have strict payload restrictions, and oversized or heavy items may not fit or may require an extra flight.

When to fish and what tackle to use

June through September is the open season. July and August offer the most stable weather and longest daylight, though the lake can be productive in June and early September as well. Water temperatures peak in August, which can slow the bite during midday, but early morning and evening remain excellent. The lake doesn't freeze until late October, but by September the days shorten noticeably and weather becomes less predictable.

Bring a 5-weight or 6-weight fly rod and a floating line for the shallows and a sink-tip for deeper holes. Woolly Buggers in black, brown, and olive work well for both trout and char. Egg patterns and small streamers imitate the lake's natural food. Spinning gear also works — small spoons (1/4 to 3/8 ounce) in silver and gold are reliable, and spinners in sizes 2 and 3 will take fish all day. The trout here are not leader-shy, so 4-pound tippet is fine for fly fishing and 6-pound test for spinning.

Where to fish on the lake

The outlet area, where Big River leaves the lake, holds concentrations of both trout and char, especially in the first hour after sunrise and the last two hours before dark. The deeper holes in the central basin hold larger trout, but they're harder to locate without a depth finder. Fish the drop-offs where shallow water meets deeper water — these transitions are where trout hunt. The north shore has several small bays and points that concentrate fish, particularly in wind; trout move into these areas to escape rough water.

Dolly Varden are more abundant in the shallower bays and near the inlet areas. If you're after numbers and willing to accept smaller fish, focus on water less than 15 feet deep. If you want a chance at a larger trout, work the deeper structure and be patient. The lake is large enough that you can spend a week here and not fish the same water twice.

Weather and safety considerations

Southwest Alaska weather is unpredictable. Summer storms can develop quickly, bringing wind, rain, and fog. Check the forecast before you leave Dillingham, but understand that forecasts for remote areas are often general. Bring rain gear rated for sustained wind and rain, not just drizzle. Hypothermia is a real risk if you end up in the water — wear a life jacket when you're in your boat, and consider a wetsuit or dry suit if you're uncomfortable in cold water.

The lake can be rough in wind, and a small raft can be unsafe in waves over two feet. Know your limits and stay off the water if conditions are beyond your skill. Carry a satellite communicator or personal locator beacon (PLB) — cell service does not exist at Big River Lake, and if you need help, a PLB is your lifeline. Tell someone in Dillingham where you're going and when you expect to return.

Cost and logistics

A week-long trip to Big River Lake typically costs $1,200 to $2,000 per person when you factor in floatplane transportation, food, and gear. If you're renting a raft or boat locally, add another $200 to $400. Lodges in the region offer guided trips to Big River and other lakes, which run $3,000 to $5,000 per person per week all-inclusive, but fishing on your own is possible if you're comfortable with self-sufficiency and wilderness camping.

The Lake and Peninsula Borough does not charge a day-use fee for the lake itself, but you'll need an Alaska fishing license. Resident licenses cost around $20 for a 14-day permit; nonresident licenses are higher. Buy your license before you leave Dillingham — you won't find a vendor at the lake.

Frequently Asked Questions

Can I fish Big River Lake without a raft?

You can fish from shore, but you'll be limited to the shallow margins and the outlet area. A raft or small boat opens up the deeper water and the productive drop-offs where larger trout hold. If you're comfortable with shore fishing only, plan to focus on the outlet and nearby bays.

What's the best month to go?

July and August offer the most stable weather and longest daylight. June can be excellent but weather is less predictable. September is productive but days shorten and storms become more frequent. If you want the best odds of good weather and long fishing days, aim for mid-July through mid-August.

Do I need a guide?

No, but a guide can save you time learning the lake and finding fish. If you're experienced camping and fishing in remote areas, you can do it on your own. If this is your first remote trip, consider hiring a guide through one of the Dillingham air taxi services or a lodge — they can arrange everything and teach you the lake in a few days.

What if my floatplane gets weathered in?

Weather delays are common. Your air taxi will reschedule your pickup when conditions improve, but you may wait a day or two. Build extra days into your trip if you have a fixed return date. Bring extra food and fuel to account for delays.

Are there bears at Big River Lake?

Brown bears use the area, especially near streams and during salmon runs. Store all food in bear canisters or hang it well away from your camp. Make noise while moving around camp. Bear encounters are rare, but treat the area as bear country and follow standard precautions.