Heisler Subwatershed Site 2-1

TR- WEST FORK LITLE SIOUX RIVER· Woodbury, Iowa· Built 2004· Earth· 40 ft tall
Low Hazard Flood Risk Reduction Local Government

Key Takeaway

Heisler Subwatershed Site 2-1 is classified as low hazard in Iowa. It was completed in 2004 and is 22 years old. Its primary use is flood risk reduction.

Physical Details

Dam Height 40 ft (taller than 84% in IA)
Dam Length715 ft
Dam TypeEarth
Max Storage210 acre-ft
Normal Storage88 acre-ft
Surface Area13 acres
Drainage Area1 sq mi
Max Discharge0 cfs
Year Completed2004 (22 years old)
NID IDIA03896

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

Ownership

Woodbury County SWCD

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Heisler Subwatershed Site 2-1?

Heisler Subwatershed Site 2-1 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 Heisler Subwatershed Site 2-1?

Heisler Subwatershed Site 2-1 is owned by Woodbury County SWCD (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Heisler Subwatershed Site 2-1 built?

Heisler Subwatershed Site 2-1 was completed in 2004, making it 22 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 Heisler Subwatershed Site 2-1?

Heisler Subwatershed Site 2-1 serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Heisler Subwatershed Site 2-1?

Heisler Subwatershed Site 2-1 has a dam height of 40 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.