Lower Monumental Dam

General Information
Type of Recreation: Dam crossing is closed until further notice.
Day-Use and Boating
State: Washington
County: Franklin and Walla Walla
Administering Office: Ice Harbor Lock and Dam
Location: Lake Sacajawea/Lake West, Snake River Mile 42, Both River Banks
Acreage: 419 Acres
Highway Directions: 41.5 miles northeast of Pasco, Washington, on Pasco-Kahlotus Road to Kahlotus, Washington, then 6 miles south on Devil's Canyon Road.

Boating: Tie-up Dock

Season and Hours of Operation
Call 1-888-DAMINFO (1-888-326-4636) for Dam Crossing Information.

Operating Agency
U.S. Army Corps of Engineers
Address: 5520 Devil Canyon Road
Kahlotus, WA 99335

509-547-7781 Lower Monumental Admin. Office
509-751-0240 Lower Granite Natural Resources Office

Emergency Numbers
Ambulance: Kahlotus, WA, 509-282-3490
Police: Walla Walla County Sheriff, Walla Walla, WA, 509-527-3265; or
Franklin County Sheriff, Pasco, WA, 1-800-572-9702

Fire: Walla Walla County 1, Dispatch, 509-529-5523;
Eureka, 509-529-5523; or
Franklin County 2, Kahlotus, WA, 509-282-3490

Distance to Nearest
Hospital: 43 Miles (Walla Walla General, Walla Walla, WA, 509-525-0480; or Lourdes Medical Center, Pasco, WA, 509-547-7704)
Grocery Store: 6 Miles
Ice Harbor Dam: 35 Miles

Alerts and Important Information/Notes
Pets must be kept on a leash.
Horses and hunting are prohibited.
The Lower Monumental Dam Control Room Operator can be reached at 509-282-3218 Ext. 231.

Contact Us

Tri-Rivers Natural Resources
Management Office
U.S. Army Corps of Engineers
2339 Monument Drive
Burbank, WA 99323
Phone: 509-547-2048

water safety