Marion Dam
Dam in Marion County, Kansas · Cottonwood River · forms Marion Lake
Height
67 ft
20 m (NID height)
Length
8,375 ft
2,553 m
Completed
1968
Marion Lake today
1,350.52 ft
7 days ▼ 0.21 ft
vs full pool
▲ 0.02 ft
Normal storage
80,680 acre-ft
Reservoir level measured Oct 23, 2026, 2:00 PM CDT. Full level page →
Facts
- Purposes
- Flood Risk Reduction; Other; Recreation; Water Supply
- Dam type
- Gravity
- Structural height
- 67 ft
- Owner
- USACE - Tulsa District (Federal)
- Maximum storage
- 189,200 acre-ft
- Surface area
- 6,210 acres
- Hydraulic height
- 62 ft
- Drainage area
- 200 sq mi
- Spillway
- Controlled, 136 ft wide
- Army Corps district
- Tulsa District
- Also known as
- Marion Reservoir
- NID ID
- KS00006
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Sep 24, 2026. Search NID ID KS00006 at nid.sec.usace.army.mil. Project website.