Rocky Reach
Dam in Chelan County, Washington · Columbia River · forms Lake Entiat
Height
130 ft
40 m (NID height)
Length
3,820 ft
1,164 m
Completed
1962
Lake Entiat today
705.68 ft
7 days ▼ 0.13 ft
Normal storage
382,000 acre-ft
Normal for the date
Reservoir level measured Oct 23, 2026, 12:00 AM PDT. Full level page →
Facts
- Purposes
- Hydroelectric; Flood Risk Reduction
- Dam type
- Gravity
- Structural height
- 130 ft
- Owner
- PUD #1 of Chelan County, WA (Public Utility)
- Maximum storage
- 390,000 acre-ft
- Surface area
- 9,810 acres
- Hydraulic height
- 112 ft
- Drainage area
- 87,800 sq mi
- Spillway
- Controlled, 600 ft wide
- Army Corps district
- Seattle District
- Also known as
- Lake Entiat
- NID ID
- WA00086
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Aug 26, 2026. Search NID ID WA00086 at nid.sec.usace.army.mil. Project website.