Ryan Dam | Great Falls

Information

Landmark: Ryan Dam
City: Great Falls
Country: USA Montana
Continent: North America

Ryan Dam, Great Falls, USA Montana, North America

Ryan Dam is a hydroelectric dam located on the Missouri River near Great Falls, Montana. It impounds the Missouri River to form Ryan Reservoir.

Visual Characteristics

The dam is a concrete gravity dam with a crest length of 1,000 feet (300 m) and a height of 120 feet (37 m) above the riverbed. The spillway is controlled by 12 radial gates. The reservoir, Ryan Reservoir, has a surface area of approximately 1,500 acres.

Location & Access Logistics

Ryan Dam is situated approximately 10 miles (16 km) west of downtown Great Falls, Montana. Access is via State Highway 87 (also known as Old US Highway 87 or River Road). Turn north onto Ryan Dam Road. Parking is available at designated pull-offs near the dam structure. Public transport is not available to the dam site.

Historical & Ecological Origin

Construction of Ryan Dam began in 1915 and was completed in 1917 by the Great Falls Power Company. Its original purpose was to generate hydroelectric power for the city of Great Falls and its burgeoning industries, particularly the Anaconda Company's copper smelting operations. The dam's construction significantly altered the natural flow of the Missouri River.

Key Highlights & Activities

Observation of the dam's structure and the operation of its spillway gates is possible from the public access areas. Fishing is permitted in Ryan Reservoir, with species including rainbow trout and kokanee salmon. Birdwatching is also a common activity due to the presence of waterfowl and other riparian species.

Infrastructure & Amenities

Restrooms are not available at the immediate dam site. There are no designated shade structures. Cell phone signal (4G/5G) is intermittent. No food vendors are located at the dam; visitors should bring their own supplies.

Best Time to Visit

For optimal viewing of the dam's structure and potential spillway activity, midday hours offer direct sunlight. The months of May through October generally provide the most favorable weather conditions for outdoor observation. Water levels in Ryan Reservoir fluctuate based on seasonal precipitation and power generation demands.

Facts & Legends

During its construction, the dam project faced significant engineering challenges due to the powerful currents of the Missouri River. A notable historical detail is that the dam's power generation was crucial for the operation of the Anaconda Company's smelter, which was a major economic driver for the region.