Tumwater Dam

Tumwater Dam

Tumwater Dam

The Tumwater Dam is located on the Wenatchee River along Highway 2 between Leavenworth in the east and Stevens Pass in the west. It has a small viewpoint area and historical marker and makes for a nice stop when traveling that route.

Fun Facts About Tumwater Dam

-The Tumwater Dam was completed in 1909.

-The Tumwater Dam is 400 feet in length.

-The Tumwater Dam is 23 feet high.

-Though very small today, at the time of its completion, the Tumwater Dam was the largest hydroelectric project west of Niagara Falls.

-The dam was constructed by the Great Northern Railway Company for the purpose of producing power for its electric locomotives traveling through the old Cascade Tunnel underneath Stevens Pass.

-Water from behind the Tumwater Dam was diverted through a penstock to a powerhouse that was located a further two miles downstream.

-Today, there is a hiking trail along the Wenatchee River that follows the route of the old penstock pipeline. This trail even utilizes a pipeline bridge with the top half cutoff as a means for hikers getting from one side of the river to the other.

-The Tumwater Dam powerhouse contained three 2,000 killowatt generators.

-The penstock pipeline that carried the water from Tumwater Dam to the powerhouse was 11,654 feet in length and had a diameter of 8.5 feet.

-The Chelan County PUD owns and operates the Tumwater Dam, having purchased it from the railroad in 1957.

-1987 saw the construction of a fish passageway to help salmon and steelhead upriver to once populated spawning grounds.

-The water backed up behind the Tumwater Dam is known as Jolanda Lake.

Featured Attractions / Activities Near Tumwater Dam

Lake Wenatchee State Park
Horseback Riding
Stevens Pass Ski Area
Osprey River Rafting
Visit Leavenworth!

Featured Lodging Near Tumwater Dam

River’s Edge Lodge

Featured Restaurants Near Tumwater Dam

Visconti’s
Los Camperos