Lucky Peak Dam
Dam in Ada County, Idaho · Boise River · forms Lucky Peak Lake
Height
340 ft
104 m (NID height)
Length
2,340 ft
713 m
Completed
1955
Lucky Peak Lake today
2,946.43 ft
7 days ▲ 0.87 ft
Normal storage
293,138 acre-ft
Normal for the date
Reservoir level measured Oct 23, 2026, 2:00 AM MDT. Full level page →
Facts
- Purposes
- Flood Risk Reduction; Irrigation; Recreation; Hydroelectric
- Dam type
- Rockfill
- Structural height
- 340 ft
- Owner
- USACE - Walla Walla District (Federal)
- Maximum storage
- 307,043 acre-ft
- Surface area
- 2,820 acres
- Hydraulic height
- 237 ft
- Drainage area
- 2,680 sq mi
- Spillway
- Uncontrolled, 600 ft wide
- Army Corps district
- Walla Walla District
- Also known as
- Lucky Peak Lake
- NID ID
- ID00288
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated May 27, 2026. Search NID ID ID00288 at nid.sec.usace.army.mil. Project website.