Tionesta Dam
Dam in Forest County, Pennsylvania · Tionesta Creek · forms Tionesta Lake
Height
154 ft
47 m (NID height)
Length
1,050 ft
320 m
Completed
1940
Tionesta Lake today
1,088.94 ft
7 days ▼ 0.50 ft
vs full pool
▲ 4.37 ft
Normal storage
7,800 acre-ft
Much below normal for the date
Reservoir level measured Oct 23, 2026, 2:00 PM EDT. Full level page →
Facts
- Purposes
- Flood Risk Reduction; Fish and Wildlife Pond; Recreation
- Dam type
- Earth
- Structural height
- 154 ft
- Owner
- USACE - Pittsburgh District (Federal)
- Maximum storage
- 180,000 acre-ft
- Surface area
- 480 acres
- Hydraulic height
- 142 ft
- Drainage area
- 478 sq mi
- Spillway
- Uncontrolled, 381 ft wide
- Army Corps district
- Pittsburgh District
- Also known as
- Tionesta Lake
- NID ID
- PA00110
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Sep 30, 2026. Search NID ID PA00110 at nid.sec.usace.army.mil. Project website.