Twelve Mile Creek Watershed Site 72-2

TR-TWELVE MILE CREEK· Union, Iowa· Built 1979· Earth· 23 ft tall
Low Hazard Fire Protection Stock Or Small Fish Pond Flood Risk Reduction Local Government

Key Takeaway

Twelve Mile Creek Watershed Site 72-2 is classified as low hazard in Iowa. It was completed in 1979 and is 47 years old. Its primary use is fire protection.

Physical Details

Dam Height 23 ft (taller than 13.3% in IA)
Dam Length350 ft
Dam TypeEarth
Max Storage93 acre-ft
Normal Storage29 acre-ft
Surface Area6 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1979 (47 years old)
NID IDIA01997

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

Union County SWCD

Local Government

Nearby Dams

Twelve Mile Creek Watershed Site 72-1

Union, IA

Low Hazard 27 ft

Twelve Mile Creek Watershed Site 68-1

Union, IA

Low Hazard 28 ft

Twelve Mile Creek Watershed Site 73

Union, IA

Low Hazard 30 ft

Twelve Mile Creek Watershed Site 68-2

Union, IA

Low Hazard 25 ft

Twelve Mile Creek Watershed Site 71

Union, IA

Low Hazard 23 ft

Dory Dam

Union, IA

Low Hazard 22 ft

Twelve Mile Creek Watershed Site 67

Union, IA

Low Hazard 28 ft

Hawk Lake Dam

Union, IA

Low Hazard 18 ft

Frequently Asked Questions

What is the hazard classification of Twelve Mile Creek Watershed Site 72-2?

Twelve Mile Creek Watershed Site 72-2 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 Twelve Mile Creek Watershed Site 72-2?

Twelve Mile Creek Watershed Site 72-2 is owned by Union County SWCD (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Twelve Mile Creek Watershed Site 72-2 built?

Twelve Mile Creek Watershed Site 72-2 was completed in 1979, making it 47 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 Twelve Mile Creek Watershed Site 72-2?

Twelve Mile Creek Watershed Site 72-2 serves the following purposes: Fire Protection, Stock, Or Small Fish Pond, Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Twelve Mile Creek Watershed Site 72-2?

Twelve Mile Creek Watershed Site 72-2 has a dam height of 23 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.