Gallup Subwatershed 4-3538

TR- LITTLE SIOUX RIVER· Monona, Iowa· Built 1954· Earth· 28 ft tall

Key Takeaway

Gallup Subwatershed 4-3538 is classified as low hazard in Iowa. It was completed in 1954 and is 72 years old. Its primary use is fire protection.

Physical Details

Dam Height 28 ft (taller than 36.9% in IA)
Dam Length0 ft
Dam TypeEarth
Max Storage73 acre-ft
Normal Storage13 acre-ft
Surface Area3 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1954 (72 years old)
NID IDIA02761

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

Monona County SWCD

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Gallup Subwatershed 4-3538?

Gallup Subwatershed 4-3538 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 Gallup Subwatershed 4-3538?

Gallup Subwatershed 4-3538 is owned by Monona County SWCD (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Gallup Subwatershed 4-3538 built?

Gallup Subwatershed 4-3538 was completed in 1954, making it 72 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 Gallup Subwatershed 4-3538?

Gallup Subwatershed 4-3538 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 Gallup Subwatershed 4-3538?

Gallup Subwatershed 4-3538 has a dam height of 28 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.