Dutch Hollow Subwatershed Site M-1

KOKER CREEK· Woodbury, Iowa· Built 1983· Earth· 26 ft tall

Key Takeaway

Dutch Hollow Subwatershed Site M-1 is classified as low hazard in Iowa. It was completed in 1983 and is 43 years old. Its primary use is fire protection.

Physical Details

Dam Height 26 ft (taller than 24.7% in IA)
Dam Length500 ft
Dam TypeEarth
Max Storage97 acre-ft
Normal Storage27 acre-ft
Surface Area5 acres
Drainage Area1 sq mi
Max Discharge0 cfs
Year Completed1983 (43 years old)
NID IDIA02450

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

Woodbury County SWCD

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Dutch Hollow Subwatershed Site M-1?

Dutch Hollow Subwatershed Site M-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 Dutch Hollow Subwatershed Site M-1?

Dutch Hollow Subwatershed Site M-1 is owned by Woodbury County SWCD (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Dutch Hollow Subwatershed Site M-1 built?

Dutch Hollow Subwatershed Site M-1 was completed in 1983, making it 43 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 Dutch Hollow Subwatershed Site M-1?

Dutch Hollow Subwatershed Site M-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 Dutch Hollow Subwatershed Site M-1?

Dutch Hollow Subwatershed Site M-1 has a dam height of 26 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.