Decatur County Roadgrade Dam 14-69-27

TR- THOMPSON R.· Decatur, Iowa· Built 1987· Earth· 30 ft tall
Low Hazard Other Fire Protection Stock Or Small Fish Pond Local Government

Key Takeaway

Decatur County Roadgrade Dam 14-69-27 is classified as low hazard in Iowa. It was completed in 1987 and is 39 years old. Its primary use is other.

Physical Details

Dam Height 30 ft (taller than 48.2% in IA)
Dam Length275 ft
Dam TypeEarth
Max Storage73 acre-ft
Normal Storage21 acre-ft
Surface Area4 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1987 (39 years old)
NID IDIA02356

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

Decatur County Board of Supervisors

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Decatur County Roadgrade Dam 14-69-27?

Decatur County Roadgrade Dam 14-69-27 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 Decatur County Roadgrade Dam 14-69-27?

Decatur County Roadgrade Dam 14-69-27 is owned by Decatur County Board of Supervisors (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Decatur County Roadgrade Dam 14-69-27 built?

Decatur County Roadgrade Dam 14-69-27 was completed in 1987, making it 39 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 Decatur County Roadgrade Dam 14-69-27?

Decatur County Roadgrade Dam 14-69-27 serves the following purposes: Other, 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 Decatur County Roadgrade Dam 14-69-27?

Decatur County Roadgrade Dam 14-69-27 has a dam height of 30 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.