Kachess Dam
Dam in Kittitas County, Washington · Kachess River · forms Kachess Lake
Height
115 ft
35 m (NID height)
Length
1,400 ft
427 m
Completed
1912
Kachess Lake today
2,213.86 ft
7 days ▼ 0.88 ft
Normal storage
239,000 acre-ft
Reservoir level measured Oct 21, 2026, 12:00 AM PDT. Full level page →
Facts
- Purposes
- Flood Risk Reduction; Irrigation; Recreation
- Dam type
- Earth
- Structural height
- 115 ft
- Owner
- BUREAU OF RECLAMATION (Federal)
- Maximum storage
- 239,000 acre-ft
- Surface area
- 4,535 acres
- Hydraulic height
- 57 ft
- Drainage area
- 63 sq mi
- Spillway
- Controlled, 50 ft wide
- Army Corps district
- Seattle District
- Also known as
- Kachess Lake
- NID ID
- WA00260
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Nov 21, 2024. Search NID ID WA00260 at nid.sec.usace.army.mil. Project website.