USACE to host Boise River Flood Risk Management Information session at Lucky Peak Dam

U.S. Army Corps of Engineers, Walla Walla District
Published March 9, 2026
The Boise River system includes Anderson Ranch Dam, Arrowrock Dam, and Lucky Peak Dam. Together, these reservoirs capture snowmelt and rainfall runoff from the Boise River basin. Each winter, reservoir levels are lowered to create space for storing spring runoff and to reduce flood risk.

The Boise River system includes Anderson Ranch Dam, Arrowrock Dam, and Lucky Peak Dam. Together, these reservoirs capture snowmelt and rainfall runoff from the Boise River basin. Each winter, reservoir levels are lowered to create space for storing spring runoff and to reduce flood risk.

The U.S. Army Corps of Engineers, Walla Walla District, invites members of the public and media to attend an informational event at Lucky Peak Dam to learn how the Boise River system helps reduce flood risk for communities across the Treasure Valley. The event will take place at 10 a.m. Wednesday, March 11, at the Lucky Peak Dam Viewpoint site, ahead of Idaho’s Flood Awareness Week, observed March 15-21.

During the event, agency water management experts will discuss how the Boise River system operates and what water managers monitor as spring runoff season approaches. Attendees will have an opportunity to ask questions, learn about current river conditions and better understand USACE flood risk management operations.

The Boise River system includes Anderson Ranch Dam, Arrowrock Dam, and Lucky Peak Dam. Together, these reservoirs capture snowmelt and rainfall runoff from the Boise River basin. Each winter, reservoir levels are lowered to create space for storing spring runoff and to reduce flood risk.

The event will offer insights into:

  • Current conditions on the Boise River system
  • How the Boise River dam system operates
  • How snowpack and runoff conditions are monitored
  • Why understanding flood risk is important for residents living near the Boise River

Members of the media planning to attend are encouraged to RSVP in advance.

RSVP / Media Contact:
Public Affairs Office
U.S. Army Corps of Engineers, Walla Walla District
509-527-7020
cenww-pa@usace.army.mil

The U.S. Army Corps of Engineers’ Walla Walla District manages water resources infrastructure across the Pacific Northwest, working with regional partners to reduce flood risk, support navigation and hydropower, protect ecosystems, and provide recreation opportunities for the public.


Contact
Public Affairs Office
509-527-7020
cenww-pa@usace.army.mil

Release no. 26-005