St. Anthony Falls Lower Lock and Dam
Dam in Hennepin County, Minnesota · Mississippi · forms Intermediate Pool
Height
58 ft
18 m (NID height)
Length
213 ft
65 m
Completed
1956
Intermediate Pool today
750.74 ft
7 days ▲ 0.38 ft
vs full pool
▲ 0.74 ft
Normal storage
375 acre-ft
Much above normal for the date
Reservoir level measured Oct 23, 2026, 4:15 PM CDT. Full level page →
Facts
- Purposes
- Navigation; Recreation
- Dam type
- Concrete
- Structural height
- 58 ft
- Owner
- USACE - St. Paul District (Federal)
- Maximum storage
- 420 acre-ft
- Surface area
- 50 acres
- Hydraulic height
- 39 ft
- Drainage area
- 19,680 sq mi
- Spillway
- Controlled, 168 ft wide
- Navigation locks
- 1
- Army Corps district
- St. Paul District
- Also known as
- Intermediate Pool
- NID ID
- MN00591
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Apr 30, 2026. Search NID ID MN00591 at nid.sec.usace.army.mil. Project website.