8 May 2024

Lower Monumental Dam closes public dam crossing May 13 through 21

KAHLOTUS, Wash. – Officials at Lower Monumental Lock and Dam will be closing public dam crossings May 13 through 21 to perform maintenance.

16 Apr 2024

Lower Monumental Dam closes public dam crossing April 16 through 18

KAHLOTUS, Wash. – Officials at Lower Monumental Lock and Dam will be closing public dam crossings April 16 through 18 to perform maintenance.

1 Apr 2024

Walla Walla District reopens navigation locks after extended outage; completes work on multiple BIL-funded projects

COLUMBIA & SNAKE RIVERS, Ore. & Wash. – The U.S. Army Corps of Engineers Walla Walla District reopened navigation locks on the Columbia and Snake rivers on March 29 after an eleven-week outage. This extended outage allowed the district to perform routine maintenance and to replace aged equipment to reduce the risk of asset failure.

13 Mar 2024

Lower Monumental Dam closes public dam crossing March 18 through 21

KAHLOTUS, Wash. – Officials at Lower Monumental Lock and Dam will be closing public dam crossings March 18 through 21 to perform maintenance.

11 Dec 2023

23-058 Lower Monumental Dam closes public dam crossing Dec. 18 through 21 to perform maintenance

Kahlotus, Wash. – Officials at Lower Monumental Lock and Dam will be closing public dam crossings Dec. 18 through 21 to perform maintenance.

10 Oct 2023

23-049 Lower Monumental Dam closes public dam crossing Oct. 16 through 19 to perform maintenance

Kahlotus, Wash. – Officials at Lower Monumental Lock and Dam will be closing public dam crossings Oct. 16 through 19 to perform maintenance.

8 Sep 2023

23-046 Lower Monumental Dam closes public dam crossing Sept 11 through 28 to perform maintenance

Kahlotus, Wash. – Officials at Lower Monumental Lock and Dam will be closing public dam crossings Sept. 11 through 28 to perform maintenance.

29 Aug 2023

23-044 Lower Monumental Dam closes public dam crossing Sept 6 to perform maintenance

Kahlotus, Wash. – Officials at Lower Monumental Lock and Dam will be closing public dam crossings Sept. 6 to perform maintenance.

6 Jun 2023

Waiting in the wings: A history of Little Goose Lock and Dam

By 1962, Ice Harbor Lock and Dam had been built and construction of the second lower Snake River dam, Lower Monumental, was being passed to the US Army Corps of Engineers Seattle District. The third dam in the queue was right on the heels of Lower Monumental, but construction could not begin until the details of its downstream neighbor were determined.

3 May 2023

'We’ll cross that bridge…': A history of Lower Monumental Lock and Dam

Lower Monumental Lock and Dam sits on a remote stretch of the Snake River, in a landscape of wheat fields and rolling hills. The only town within a 20-minute drive is Kahlotus, Washington, six miles north, with a population of less than 200. The only major road is State Highway 261, which crosses the river at Lyons Ferry, 18 miles upriver.