Katmai National Park Guide: Best Activities, When to Visit & Where to Stay

Katmai National Park and Preserve protects four million acres of volcanic landscape, salmon-rich rivers, and coastal wilderness on the Alaska Peninsula, approximately 290 air miles southwest of Anchorage. The park is most famous for one thing: bears. Katmai is home to roughly 2,200 brown bears, one of the densest populations of brown bears on Earth, and the viewing opportunities here are unrivaled anywhere in the world. The epicenter of this spectacle is Brooks Falls, a six-foot waterfall on the Brooks River where sockeye salmon leap upstream by the thousands each July, and brown bears gather to catch them mid-air. The image of a massive brown bear standing at the lip of the falls, mouth open, waiting for a salmon to leap into its jaws, is one of the most iconic wildlife images in existence.

But Katmai's story began with catastrophe, not bears. On June 6, 1912, Novarupta Volcano erupted in what became the most powerful volcanic event of the 20th century. The eruption was ten times more powerful than Mount St. Helens, ejecting nearly seven cubic miles of ash and pumice into the atmosphere. The resulting ash flow buried a nearby valley under 700 feet of volcanic deposits, and fumaroles vented steam and gas from the still-hot deposits for decades afterward. When a National Geographic expedition reached the valley in 1916, they found tens of thousands of steam vents rising from the valley floor and named it the Valley of Ten Thousand Smokes. The valley no longer smokes, as the deposits have cooled, but the surreal, ash-filled landscape remains one of the most otherworldly environments in any national park.

The park stretches from the Pacific coast, with its rocky headlands, sea stacks, and colonies of seabirds, across the volcanic Aleutian Range to the lake-studded interior. The coast is accessible only by boat or floatplane and sees very few visitors. Most of the park's roughly 24,000 annual visitors come for one purpose: to watch bears fish at Brooks Falls.

Best Activities

Bear Viewing at Brooks Falls - This is the signature experience at Katmai and one of the premier wildlife viewing opportunities on Earth. From late June through late July, brown bears congregate at Brooks Falls to catch sockeye salmon attempting to leap the six-foot waterfall. At peak times, a dozen or more bears may be visible simultaneously, each employing different fishing techniques. Some stand at the lip of the falls waiting for fish to jump into their mouths. Others plunge into the pool below the falls, pinning fish against the river bottom. Cubs watch and imitate their mothers. Three viewing platforms provide close, safe observation points: the Falls Platform overlooks the falls from approximately 50 yards, the Riffles Platform sits downstream where bears fish in shallower water, and the Lower River Platform offers views of bears fishing at the river mouth where it enters Naknek Lake.

Valley of Ten Thousand Smokes Tour - A concessionaire-operated bus departs Brooks Camp daily for the 23-mile drive to the Overlook at the edge of the Valley of Ten Thousand Smokes. The road crosses rivers, passes through dense alder and spruce forest, and emerges at a dramatic viewpoint overlooking the vast, ash-filled valley carved by the Ukak River. A ranger-led hike descends 1.5 miles to the valley floor, where visitors walk on the compacted volcanic ash and pumice deposited by the 1912 eruption. The landscape is lunar and desolate, a stark contrast to the green, bear-filled world of Brooks Camp.

Brooks River Bear Viewing (September) - A second wave of bear activity occurs in September and October when the sockeye salmon, having spawned and died, float downstream. Bears return to the Brooks River to feed on the carcasses, fattening up before hibernation. The September bears are often the largest and fattest of the year, having spent the entire summer feeding. Cubs born the previous winter are larger and more playful. The crowds are thinner than in July, and the fall colors add beauty to the scene.

Fishing - Katmai offers world-class fly-fishing for all five species of Pacific salmon, rainbow trout, arctic char, grayling, and lake trout. The Brooks River is catch-and-release only for rainbow trout, and barbless hooks are required. Other rivers and lakes throughout the park offer outstanding fishing. Many visitors fly in with fishing lodges that operate within or near the park, accessing remote rivers by floatplane. A valid Alaska fishing license is required.

Hallo Bay Bear Viewing - On the Pacific coast of the park, Hallo Bay offers a different bear viewing experience. Bears feed on sedge grasses along the coastal meadows in June before the salmon arrive, and later on salmon in the bay's streams. Day trips by floatplane from Homer or Kodiak bring small groups to the beach, where bears are viewed at close range without the platforms and infrastructure of Brooks Camp. The coastal setting with snow-capped volcanoes as a backdrop is spectacular.

Kayaking Naknek Lake and the Coast - Naknek Lake, the largest lake in the park, offers multi-day kayaking trips through a landscape of volcanic islands, submerged forests, and mountain-backed shorelines. The Pacific coast provides even more remote paddling among sea stacks, sea otter rafts, and tidewater environments. Both areas are extremely remote and require advanced kayaking skills and bear awareness.

When to Visit

Late June to Late July (Peak Bear Season) - This is the prime window for bear viewing at Brooks Falls, when sockeye salmon are actively running and bears are fishing at the falls. The period from July 10 to July 25 is typically the peak, with the most bears and the most dramatic fishing behavior. Access to the Falls Platform is managed by a time-share system during peak periods, limiting viewing to one hour per visit. Book flights and accommodations many months in advance.

August (Transition Period) - Salmon numbers at Brooks Falls decline through August, and bears disperse to other streams and berry patches. The Valley of Ten Thousand Smokes tour continues to operate. Fishing remains excellent throughout the park. Visitor numbers decrease from the July peak. Some bears can still be seen along the Brooks River, but the concentrated falls fishing is largely over.

September to Mid-October (Late Bear Season) - Bears return to the Brooks River to feed on spawned-out salmon carcasses. The bears are at their largest and fattest as they prepare for hibernation. Fall colors paint the boreal forest in golds and oranges. Crowds are smaller, and the atmosphere is quieter and more contemplative than the frenetic energy of July. Brooks Lodge closes in mid-September, but the campground remains open slightly longer.

November to May (Closed/Inaccessible) - Most park facilities are closed, and access is extremely limited during winter. Bears are in hibernation. Deep snow covers the landscape. A few hardy visitors access the park by ski plane for winter photography or mountaineering.

Where to Stay

Brooks Lodge - The only lodge within the park, located at Brooks Camp on the shore of Naknek Lake, a short walk from the Brooks River bear viewing platforms. The lodge offers 16 rooms with private baths, a dining room serving three meals daily, and a common area. The location is extraordinary: bears frequently walk through the lodge grounds, and the sound of salmon splashing is audible from the rooms. Brooks Lodge fills up a year or more in advance for July dates. Operated by the park concessionaire.

Brooks Camp Campground - A designated campground at Brooks Camp with 15 tent sites enclosed by an electric fence to separate bears and campers. Sites include tent pads, a communal cooking shelter, and food storage caches. Reservations are required and are made through recreation.gov, opening in January for the following summer. The campground is popular and competitive.

Fishing Lodges - Several fly-in fishing lodges operate within or adjacent to the park, offering all-inclusive packages with guided fishing, floatplane access to remote rivers, comfortable cabins, and meals. Kulik Lodge, Grosvenor Lodge, and Enchanted Lake Lodge are among the options within the park. These lodges typically book a year or more in advance and are premium-priced.

King Salmon - The small town of King Salmon, the staging point for flights into the park, has a few basic accommodation options including the Antlers Inn and several fishing lodges. Services are limited but include a small grocery store, restaurant, and the park's main visitor center.

Getting There

By Air to King Salmon - Most visitors fly from Anchorage to King Salmon Airport (AKN) on scheduled flights operated by regional carriers. The flight takes approximately 90 minutes. From King Salmon, a floatplane or amphibious aircraft flies visitors to Brooks Camp in approximately 20 minutes. This short floatplane ride over Naknek Lake is scenic and lands directly on the beach at Brooks Camp.

By Floatplane from Homer or Kodiak - Day trips to the park's coastal areas, including Hallo Bay and Geographic Harbor, operate by floatplane from Homer (approximately one hour each way) and Kodiak. These trips are weather-dependent and typically spend four to six hours on the ground for bear viewing.

By Boat - The Naknek River connects King Salmon to Naknek Lake, and some visitors access Brooks Camp by motorboat. This is primarily used by anglers and local residents rather than tourists.

Essential Tips

• Bear encounters are not just possible, they are guaranteed. Brooks Camp and the surrounding area have the highest density of brown bears you are likely to encounter anywhere. Rangers provide a mandatory bear orientation upon arrival. Never approach a bear. Yield the trail to bears. Do not run. Store all food in provided caches. Follow all ranger instructions without exception.
• The Falls Platform has time limits during peak season. When bear activity is high in July, viewing time at the Falls Platform is limited to one hour. Arrive early and be prepared to wait. The Riffles Platform and Lower River Platform have no time limits and offer excellent viewing as well.
• Book everything as early as possible. Brooks Lodge rooms and campground sites for July dates are among the most competitive reservations in the national park system. Plan at least a year in advance. Floatplane flights from King Salmon also require advance booking.
• Weather can delay travel for days. Flights to and from Brooks Camp are weather-dependent. Build buffer days into your itinerary. It is not uncommon to be weathered in for one to three days. Bring extra food and patience.
• Bear spray is recommended but not always practical at Brooks Camp, where bears and humans share close quarters by design. Follow ranger guidance on when and how to use bear spray. The viewing platforms are designed to provide safe viewing distances.
• No entrance fee is charged, but there is a $10 per person per day Brooks Camp user fee during the summer season.

Nearby Attractions

McNeil River State Game Sanctuary - Located 100 miles northeast of Brooks Camp, McNeil River hosts the largest gathering of brown bears in the world during the chum salmon run in July and August. Access is by permit only, awarded through a lottery managed by the Alaska Department of Fish and Game. Viewing is limited to 10 people per day, making it one of the most exclusive wildlife viewing experiences on Earth.

Kodiak Island - Accessible by air or ferry from Homer, Kodiak is home to the Kodiak brown bear, the largest subspecies of brown bear. The Kodiak National Wildlife Refuge covers most of the island and offers bear viewing, fishing, and backcountry exploration. The town of Kodiak has a Russian heritage, a fishing fleet, and several museums.

Lake Clark National Park - Directly north of Katmai, Lake Clark protects a similarly wild landscape of volcanoes, glaciers, and bear-filled rivers. Bear viewing at Chinitna Bay and Silver Salmon Creek on the park's Cook Inlet coast offers an alternative to Katmai with smaller crowds.

King Salmon and the Naknek River - The town of King Salmon sits on the Naknek River, one of the most productive sockeye salmon rivers in the world. The annual Bristol Bay sockeye run brings millions of fish through these waters, supporting a massive commercial fishing fleet and outstanding sport fishing.