Foss Dam
Dam in Custer County, Oklahoma · Washita River · forms Foss Lake
Height
142 ft
43 m (NID height)
Length
18,130 ft
5,526 m
Completed
1961
Foss Lake today
1,637.79 ft
7 days ▼ 0.17 ft
vs full pool
▼ 4.21 ft
Normal storage
168,732 acre-ft
Reservoir level measured Oct 23, 2026, 9:00 AM CDT. Full level page →
Facts
- Purposes
- Flood Risk Reduction
- Dam type
- Earth
- Structural height
- 139 ft
- Owner
- BUREAU OF RECLAMATION (Federal)
- Maximum storage
- 816,900 acre-ft
- Surface area
- 13,141 acres
- Hydraulic height
- 128 ft
- Drainage area
- 1,473 sq mi
- Spillway
- Uncontrolled, 4 ft wide
- Army Corps district
- Tulsa District
- Also known as
- Foss Reservoir
- NID ID
- OK02503
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Nov 21, 2024. Search NID ID OK02503 at nid.sec.usace.army.mil. Project website.