Innes Jalas Subwatershed Site 3-1

TR- MURRAY CREEK· O'Brien, Iowa· Built 1966· Earth· 30 ft tall

Key Takeaway

Innes Jalas Subwatershed Site 3-1 is classified as low hazard in Iowa. It was completed in 1966 and is 60 years old. Its primary use is fire protection.

Physical Details

Dam Height 30 ft (taller than 48.2% in IA)
Dam Length0 ft
Dam TypeEarth
Max Storage19 acre-ft
Normal Storage9 acre-ft
Surface Area1 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1966 (60 years old)
NID IDIA02779

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

OBrien County SWCD

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Innes Jalas Subwatershed Site 3-1?

Innes Jalas Subwatershed Site 3-1 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 Innes Jalas Subwatershed Site 3-1?

Innes Jalas Subwatershed Site 3-1 is owned by OBrien County SWCD (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Innes Jalas Subwatershed Site 3-1 built?

Innes Jalas Subwatershed Site 3-1 was completed in 1966, making it 60 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 Innes Jalas Subwatershed Site 3-1?

Innes Jalas Subwatershed Site 3-1 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 Innes Jalas Subwatershed Site 3-1?

Innes Jalas Subwatershed Site 3-1 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.