Hartmann Dam 3892 Reservoir Report

Last Updated: December 6, 2025

Located in Steinauer, Nebraska, the Hartmann Dam 3892 is a private-owned earth dam primarily constructed for recreational purposes along the TR-Sampson Branch of Turkey Creek.


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Summary

Completed in 2016, this dam stands at a height of 20.7 feet, with a hydraulic height of 19.51 feet and a structural height of 24.25 feet. With a storage capacity of 152.9 acre-feet, the dam covers a surface area of 12.2 acres and serves as a popular spot for outdoor activities.

Managed by the Nebraska Department of Natural Resources (NE DNR), the Hartmann Dam 3892 is regulated, inspected, and enforced by the state to ensure its safety and compliance with regulations. Despite being classified as a low hazard potential structure, the dam has a satisfactory condition assessment as of May 2017. In the event of emergencies, it is crucial for the dam to have an Emergency Action Plan (EAP) in place to mitigate risks and protect surrounding areas from potential flooding incidents.

With a Congressman representing the area in Congressional District 03, Nebraska, the Hartmann Dam 3892 plays a significant role in providing recreational opportunities for locals and visitors alike. As a vital water resource in Johnson County, this dam serves as an essential component of the community's landscape, contributing to the conservation and sustainable management of water resources in the region.

Year Completed

2016

Dam Length

576

Dam Height

20.7

River Or Stream

TR-SAMPSON BR TURKEY CREEK

Primary Dam Type

Earth

Surface Area

12.2

Hydraulic Height

19.51

Drainage Area

0.68

Nid Storage

152.9

Structural Height

24.25

Hazard Potential

Low

Foundations

Soil

Nid Height

24
       
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Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.