Bear Lake

Bear Lake is one of the most striking lakes in the American West — a large, intensely turquoise-blue mountain lake straddling the border of southeastern Idaho and northern Utah, its Caribbean-like color the result of tiny limestone particles suspended in the remarkably clear water that scatter light to produce an electric, ever-shifting blue. Stretching about 20 miles long and 8 miles wide, it is one of the largest natural lakes in the region.

Set in a broad mountain valley at roughly 6,000 feet elevation, Bear Lake has white sandy beaches, warm summer water and a classic resort atmosphere in the towns of Garden City, Utah, and St. Charles, Idaho, on its shores. The lake is also notable for several fish species found nowhere else — Bear Lake cutthroat trout, Bonneville cisco, Bear Lake whitefish and Bear Lake sculpin. A gem of vivid color, clear water and mountain scenery, Bear Lake is a treasured natural icon of the Idaho–Utah border country.

Summer (July and August) is the prime season, when the lake’s shallow bays warm to comfortable swimming temperatures, the beaches fill, the boats are out, and the turquoise color is at its most vivid under blue skies — it is also the most crowded, with the July Raspberry Days festival drawing big crowds to Garden City. Late June and September are pleasant and quieter. The lake can be cold and windy in spring and fall; winter is quiet and cold. Summer for the beaches and turquoise water is the highlight — come early in the season or midweek for more elbow room, and plan to stay for the sunsets.

Bear Lake is home to four fish species found nowhere else on Earth — the Bear Lake cutthroat trout, Bonneville cisco, Bear Lake whitefish and Bear Lake sculpin — making its waters globally significant for fish biodiversity. Above the waterline the lake and surrounding valley host mule deer, pronghorn, eagles and hawks, waterfowl and shorebirds on the lake, and the mammals and birds of the surrounding mountain country. The unique fishery and the productive lake support varied wildlife. Bear Lake’s endemic fish are a rare treasure — a reminder that even a recreational lake can be a center of evolutionary uniqueness.

Bear Lake is large and open to wind — conditions can change fast from calm to whitecaps, and afternoon summer storms can bring lightning on the open water; watch the sky and head for shore in time. The lake is cold outside the summer months; even in summer the open-water depths remain cold, and cold-water immersion is a risk far from shore. Wear life jackets and watch children near the water. The summer beaches are crowded with a mix of watercraft; be alert when swimming. Bear Lake Summit on U.S. 89 can be snowy or icy in the off-season; check road conditions.

Bear Lake is a premier water-recreation destination — boating, jet-skiing and water-skiing across its vast expanse of turquoise water, swimming and sunbathing on the white sandy beaches, kayaking, paddleboarding, fishing for the lake’s unique fish species, and personal watercraft rentals from the shore towns. Bear Lake State Park on the Idaho side has campgrounds, a marina, a boat ramp and the famous North Beach. The resort towns of Garden City (Utah) and St. Charles (Idaho) offer services, beach amenities and the local raspberry milkshakes for which the area is beloved. Boating and swimming in the turquoise water and relaxing on the white sandy beaches are the signature draws.

Bear Lake has been inhabited for thousands of years by the Shoshone and Bannock peoples, who camped along its shores and fished its waters. In the early 19th century it was a rendezvous site for the Rocky Mountain fur trade — mountain men including Jedediah Smith and Jim Bridger camped here for the famous annual fur-trade gatherings. Settlers arrived in the 1860s, and the Bear Lake Valley became farming and ranching country. The lake and its beaches became a resort destination in the 20th century. Bear Lake preserves this vivid blue gem and its rich human history, a treasured icon of the Idaho–Utah border.

Bear Lake is an ancient natural lake occupying a valley created by faulting — a structural depression or graben between fault-bounded mountain ranges in the Basin and Range province, similar in origin to the Great Salt Lake basin. It is one of the oldest lakes in North America, estimated to be 28,000 years or more old, and has been isolated long enough for unique fish species to evolve within it. The famous turquoise color comes from tiny calcium carbonate (limestone) particles suspended in the clear water, which scatter blue and green wavelengths of light. The ancient fault basin, the isolation and the suspended limestone created this remarkable lake.

Bear Lake is an ancient, isolated mountain lake that has served as a refuge for endemic fish over tens of thousands of years, making it one of the most ecologically significant lakes in the Intermountain West. The lake’s clear, carbonate-rich water, its ancient isolation and the surrounding mountain valley create a distinctive ecosystem. Invasive species, water level management and shoreline development are ongoing conservation concerns. Protecting the lake’s clear water, its endemic fish populations and the surrounding watershed sustains both the irreplaceable ecology and the vivid beauty of this ancient lake.

Bear Lake holds a beloved place in the culture of the Idaho–Utah border country — the ‘Caribbean of the Rockies,’ famed for its electric turquoise color and white sandy beaches, a summer gathering place for generations of families from across the region. Its history as a fur-trade rendezvous site ties it to the early Mountain Men of the West, and Garden City’s famous raspberry milkshakes have become a beloved local tradition. Bear Lake is a cherished natural and cultural icon of southeastern Idaho and the Intermountain West.

Bear Lake straddles the Idaho–Utah border in the Bear Lake Valley, reached from southeastern Idaho via U.S. Highway 89 over Bear Lake Summit (about three hours from Boise, or two from Salt Lake City). Bear Lake State Park on the Idaho side has the North Beach, a marina and campgrounds (fees and reservations apply); Garden City, Utah, on the south shore has the main resort amenities, boat rentals and milkshake stands. The surrounding roads are paved. Summer weekends are very busy. Check Idaho State Parks and Bear Lake Valley tourism sources for fees, reservations, boat rentals and current conditions before visiting.

Bear Lake State Park (Idaho) and Utah State Parks co-manage the lake’s shores. The lake’s endemic fish are protected. Visitors help by cleaning, draining and drying watercraft to prevent aquatic invasive species, practicing clean boating (no fuel spills), camping only in designated sites, respecting the lake’s shoreline and water, and following all rules. The ancient endemic fishery and the clear water are irreplaceable. Protecting the lake’s water quality, its endemic fish and the surrounding watershed sustains both the ecology and the brilliant turquoise beauty of this ancient and remarkable lake.

Clean, drain and dry watercraft to prevent aquatic invasive species (inspections apply on the Idaho side). A state park fee applies at Bear Lake State Park North Beach; camping requires reservations. Follow boating, no-wake and speed rules on the lake. Camp only in designated sites. Protect endemic fish species; follow special fishing regulations (check Idaho Fish & Game for Bear Lake-specific rules, as the Bonneville cisco fishery has unique seasonal regulations). Pets must be leashed in the state park. Pack out all trash. Check Idaho and Utah State Parks for fees, reservations and current rules before visiting.

The resort community of Garden City, Utah (milkshakes, boat rentals and beaches), the small Idaho town of St. Charles, Minnetonka Cave (a large limestone cavern in the mountains above St. Charles), Paris (with its striking 19th-century tabernacle), the Bear River Range of the Wasatch-Cache National Forest, and the greater Cache Valley of northern Utah lie near the lake. Bear Lake anchors a distinctive corner of the Idaho–Utah border country, a centerpiece of a mountain-lake adventure easily combined with the resort amenities of Garden City, Minnetonka Cave and the surrounding mountain roads.

Come in July or August for the warmest water and the most vivid turquoise color under a blue sky — arrive early on summer weekends, as the beach and campgrounds fill by midday. Stop in Garden City, Utah, for a raspberry milkshake (a local institution). If possible, view the lake from the summit on U.S. 89 as you approach for the first dazzling overview. Rent a boat or jet ski from one of the beach concessions, swim from the sandy North Beach, and clean your boat before and after to protect the lake’s remarkable endemic fish.