Klaus Hartmann Dam

TR-LOST BRANCH· Johnson, Nebraska· Built 2004· Earth· 35 ft tall
Low Hazard Flood Risk Reduction Private

Key Takeaway

Klaus Hartmann Dam is classified as low hazard in Nebraska. It was completed in 2004 and is 22 years old. Its primary use is flood risk reduction.

Physical Details

Dam Height 35 ft (taller than 81.9% in NE)
Dam Length602 ft
Dam TypeEarth
Max Storage338 acre-ft
Normal Storage98 acre-ft
Surface Area16 acres
Drainage Area1 sq mi
Max Discharge290 cfs
Year Completed2004 (22 years old)
NID IDNE02722

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 14, 2021
State Regulated: Yes
Regulatory Agency: NE DNR

Ownership

Hartmann Family LLC

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Klaus Hartmann Dam?

Klaus Hartmann 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 Klaus Hartmann Dam?

Klaus Hartmann Dam is owned by Hartmann Family LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Klaus Hartmann Dam built?

Klaus Hartmann Dam 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 Klaus Hartmann Dam?

Klaus Hartmann Dam 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 Klaus Hartmann Dam?

Klaus Hartmann Dam has a dam height of 35 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 Klaus Hartmann Dam last inspected?

Klaus Hartmann Dam was last inspected on May 14, 2021. 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.