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Redfish Lake
Redfish Lake, Sawtooth Range, Idaho.jpg
Redfish Lake and the Sawtooth Range
Redfish Lake is located in Idaho
Redfish Lake
Redfish Lake
Location in Idaho
Redfish Lake is located in USA West
Redfish Lake
Redfish Lake
Location in USA West
Location Custer County, Idaho
Coordinates 44°7′N 114°56′W / 44.117°N 114.933°W / 44.117; -114.933
Type Glacial
Primary inflows Redfish Lake Creek
Primary outflows Redfish Lake Creek
to Salmon River
Basin countries United States
Max. length 4.5 mi (7.2 km)
Max. width .72 mi (1.16 km)
Max. depth 387 ft (118 m)
Shore length1 11 mi (18 km)
Surface elevation 6,547 ft (1,996 m)
1 Shore length is not a well-defined measure.

Redfish Lake is a beautiful alpine lake located in central Idaho, in the western U.S.. It sits within the Sawtooth National Recreation Area, right at the base of the stunning Sawtooth Mountains. You can find it in Custer County, just south of the town of Stanley.

Why is it Called Redfish Lake?

Redfish Lake got its name from the amazing sockeye salmon. These fish used to return from the Pacific Ocean in huge numbers. When they came back to the lake to lay their eggs (this is called spawning), there were so many that the lake would look red!

The Sockeye Salmon's Journey

Today, it's much harder for the wild sockeye salmon to make this long journey. They face challenges like several hydroelectric dams along their route. Because these salmon are so special, if you are fishing and accidentally catch a sockeye, you must immediately let it go.

Lake Size and Features

Redfish Lake is quite large! Its surface is about 6,547 feet (1,996 m) above sea level. The lake stretches about 4.5 miles (7.2 km) long and is about 0.72 miles (1.2 km) wide. At its deepest point, it goes down 387 feet (118 m). The shoreline around the lake is about 11 miles (18 km) long. If you want to hike all the way around the lake, the trail is actually 17.5 miles (28 km) long.

Water Temperature

The temperature of the lake changes throughout the year. In winter, it freezes over completely, with ice that can be 30–36 inches (75–90 cm) thick! In late July and early August, the water warms up to about 62 °F (17 °C), which is nice for swimming.

Surrounding Mountains

The lake is surrounded by impressive mountains, especially at its south end. Two of the most notable peaks are:

Getting to Redfish Lake

Redfish Lake is located about five miles (8 km) south of Stanley. There's a paved road that connects from State Highway 75 directly to the visitor area on the north shore of the lake. This makes it easy for people to visit and enjoy the beautiful scenery.

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