Coralville Dam
Dam in Johnson County, Iowa · Iowa River · forms Coralville Lake Reservoir MET Station
Height
132 ft
40 m (NID height)
Length
1,400 ft
427 m
Completed
1958
Coralville Lake Reservoir MET Station today
686.15 ft
7 days ▲ 0.13 ft
vs full pool
▲ 3.15 ft
Normal storage
28,100 acre-ft
Normal for the date
Reservoir level measured Oct 23, 2026, 7:00 AM CDT. Full level page →
Facts
- Purposes
- Flood Risk Reduction; Recreation
- Dam type
- Gravity
- Structural height
- 132 ft
- Owner
- USACE - Rock Island District (Federal)
- Maximum storage
- 420,960 acre-ft
- Surface area
- 4,050 acres
- Hydraulic height
- 93 ft
- Drainage area
- 3,115 sq mi
- Spillway
- Uncontrolled, 500 ft wide
- Army Corps district
- Rock Island District
- Also known as
- Coralville Lake
- NID ID
- IA00012
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Oct 16, 2026. Search NID ID IA00012 at nid.sec.usace.army.mil. Project website.