Four Corners Dam

TR- WEST NISHNABOTNA RIVER· Carroll, Iowa· Built 1999· Earth· 25 ft tall

Key Takeaway

Four Corners Dam is classified as low hazard in Iowa. It was completed in 1999 and is 27 years old. Its primary use is recreation.

Physical Details

Dam Height 25 ft (taller than 19.3% in IA)
Dam Length720 ft
Dam TypeEarth
Max Storage128 acre-ft
Normal Storage51 acre-ft
Surface Area11 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1999 (27 years old)
NID IDIA03199

Safety Information

Low Hazard

No probable loss of human life and low economic/environmental losses expected.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: No
State Regulated: Yes
Regulatory Agency: IOWA DNR

Ownership

Manning Community Foundation

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Four Corners Dam?

Four Corners Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Four Corners Dam?

Four Corners Dam is owned by Manning Community Foundation (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Four Corners Dam built?

Four Corners Dam was completed in 1999, making it 27 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

What is the primary purpose of Four Corners Dam?

Four Corners Dam serves the following purposes: Recreation, Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Four Corners Dam?

Four Corners Dam has a dam height of 25 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.