Smithville Dam
Dam in Clay County, Missouri · Little Platte River · forms Smithville Lake
Height
105 ft
32 m (NID height)
Length
4,000 ft
1,219 m
Completed
1979
Smithville Lake today
863.78 ft
7 days ▼ 0.13 ft
vs full pool
▼ 0.42 ft
Normal storage
144,600 acre-ft
Normal for the date
Reservoir level measured Oct 23, 2026, 10:45 AM CDT. Full level page →
Facts
- Purposes
- Flood Risk Reduction; Other; Fish and Wildlife Pond; Recreation; Water Supply
- Dam type
- Earth
- Structural height
- 105 ft
- Owner
- USACE - Kansas City District (Federal)
- Maximum storage
- 246,500 acre-ft
- Surface area
- 7,190 acres
- Hydraulic height
- 75 ft
- Drainage area
- 213 sq mi
- Spillway
- Uncontrolled, 50 ft wide
- Army Corps district
- Kansas City District
- Also known as
- Smithville Lake
- NID ID
- MO12084
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated May 13, 2026. Search NID ID MO12084 at nid.sec.usace.army.mil. Project website.