Orwell Dam
Dam in Otter Tail County, Minnesota · Otter Tail River · forms Orwell Lake
Height
60 ft
18 m (NID height)
Length
1,355 ft
413 m
Completed
1953
Orwell Lake today
1,064.26 ft
7 days ▼ 0.07 ft
vs full pool
▼ 0.24 ft
Normal storage
8,050 acre-ft
Normal for the date
Reservoir level measured Oct 23, 2026, 2:00 PM CDT. Full level page →
Facts
- Purposes
- Flood Risk Reduction; Other; Fish and Wildlife Pond; Recreation
- Dam type
- Earth
- Structural height
- 60 ft
- Owner
- USACE - St. Paul District (Federal)
- Maximum storage
- 20,600 acre-ft
- Surface area
- 805 acres
- Hydraulic height
- 35 ft
- Drainage area
- 1,820 sq mi
- Spillway
- Controlled, 33 ft wide
- Army Corps district
- St. Paul District
- Also known as
- Orwell Lake
- NID ID
- MN00574
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Sep 15, 2026. Search NID ID MN00574 at nid.sec.usace.army.mil. Project website.