Zimmerman Dam

TR-HAT CREEK· Sioux, Nebraska· Built 1904· Earth· 14 ft tall
Low Hazard Irrigation Private

Key Takeaway

Zimmerman Dam is classified as low hazard in Nebraska. It was completed in 1904 and is 122 years old. Its primary use is irrigation.

Physical Details

Dam Height 14 ft (taller than 7.8% in NE)
Dam Length580 ft
Dam TypeEarth
Max Storage59 acre-ft
Normal Storage26 acre-ft
Surface Area9 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1904 (122 years old)
NID IDNE01112

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
Last Inspection: May 5, 2023
State Regulated: Yes
Regulatory Agency: NE DNR

Ownership

Zimmerman Trust

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Zimmerman Dam?

Zimmerman Dam 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 Zimmerman Dam?

Zimmerman Dam is owned by Zimmerman Trust (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Zimmerman Dam built?

Zimmerman Dam was completed in 1904, making it 122 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 Zimmerman Dam?

Zimmerman Dam serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Zimmerman Dam?

Zimmerman Dam has a dam height of 14 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.

When was Zimmerman Dam last inspected?

Zimmerman Dam was last inspected on May 5, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.

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.