Tieton Dam
Dam in Yakima County, Washington · Tieton River · forms Rimrock Lake
Height
319 ft
97 m (NID height)
Length
920 ft
280 m
Completed
1925
Rimrock Lake today
2,849.80 ft
7 days ▼ 0.68 ft
Normal storage
198,000 acre-ft
Reservoir level measured Oct 21, 2026, 12:00 AM PDT. Full level page →
Facts
- Purposes
- Flood Risk Reduction; Irrigation; Recreation
- Dam type
- Rockfill
- Structural height
- 319 ft
- Owner
- BUREAU OF RECLAMATION (Federal)
- Maximum storage
- 198,000 acre-ft
- Surface area
- 2,525 acres
- Hydraulic height
- 198 ft
- Drainage area
- 186 sq mi
- Spillway
- Controlled, 390 ft wide
- Army Corps district
- Seattle District
- Also known as
- Rimrock Lake
- NID ID
- WA00273
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Nov 21, 2024. Search NID ID WA00273 at nid.sec.usace.army.mil. Project website.