Rock Island Dam, Hydroelectric power station on Columbia River, Washington
Rock Island Dam extends 3,800 feet across the Columbia River with two powerhouses containing 19 generators that produce 629 megawatts of electricity.
The construction of Rock Island Dam started in 1930 during the Great Depression, becoming the first dam to span the Columbia River upon completion in 1933.
The dam's development transformed the regional power infrastructure and created employment opportunities for local communities during economic hardship periods.
The facility generates an average of 2,600 gigawatt-hours of electricity annually, supplying power to Chelan County and connecting to broader transmission networks.
The second powerhouse features eight horizontal shaft generators that ranked among the largest worldwide when installed in 1979.
Location: Washington
Inception: 1930
Length: 1,097 m
GPS coordinates: 47.34220,-120.09500
Latest update: March 12, 2025 14:39
The Gorge Amphitheatre
27.9 km
Ginkgo Petrified Forest State Park
44.3 km
Grandfather Cuts Loose the Ponies
43.1 km
Wild Horse Wind and Solar Facility
37.2 km
Lincoln Rock State Park
24.1 km
Whiskey Dick Mountain
36.8 km
Vantage Bridge
45.4 km
Lake Lenore Caves State Park
45.7 km
Daroga State Park
32.9 km
Columbia River Bridge
17.3 km
Wenatchee Confluence State Park
21.8 km
Peshastin Pinnacles State Park
39 km
Lake Entiat
47 km
Squilchuck State Park
21.2 km
Senator George Sellar Bridge
16.9 km
Wenatchee Valley Museum & Cultural Center
18.6 km
Rock Island Railroad Bridge
5.1 km
Richard Odabashian Bridge
22 km
Downtown Wenatchee Historic District
18.6 km
Pangborn-Herndon Memorial Site
17.8 km
Grant County Courthouse
41 km
Nifty Theatre
34 km
Douglas County Courthouse
33.9 km
Chelan Butte Lookout
40.3 km
Badger Mountain Lookout
40.2 km
Rocky Reach Dam Discovery Center
26.2 km
Liberty Theatre
18.7 km
Rock Island Pool
90 mReviews
Visited this place? Tap the stars to rate it and share your experience / photos with the community! Try now! You can cancel it anytime.
Discover hidden gems everywhere you go!
From secret cafés to breathtaking viewpoints, skip the crowded tourist spots and find places that match your style. Our app makes it easy with voice search, smart filtering, route optimization, and insider tips from travelers worldwide. Download now for the complete mobile experience.
A unique approach to discovering new places❞
— Le Figaro
All the places worth exploring❞
— France Info
A tailor-made excursion in just a few clicks❞
— 20 Minutes