Road Dam 16-11-11 Reservoir Report

Last Updated: December 6, 2025

Road Dam 16-11-11, located in Cass, Nebraska, serves as a crucial structure for flood risk reduction in the area.


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Summary

Built in 1989, this earth dam stands at a height of 30 feet and has a hydraulic height of 31 feet, with a structural height of 36 feet. It spans 900 feet in length and has a storage capacity of 111 acre-feet, offering protection to the surrounding community from potential flooding events.

Managed by the local government and regulated by the Nebraska Department of Natural Resources, Road Dam 16-11-11 has been inspected regularly, with the last assessment conducted in March 2017. The dam is classified as having a low hazard potential and is deemed to be in satisfactory condition. With a drainage area of 0.3 square miles and a maximum discharge capacity of 51 cubic feet per second, the dam plays a vital role in managing water flow and protecting the region from inundation.

Despite its critical function in flood control, Road Dam 16-11-11 also serves other purposes beyond flood risk reduction. Situated on TR-DECKER CREEK, this dam contributes to the overall water resource management in the area. With its stone core and soil foundation, the dam exemplifies engineering excellence in water infrastructure, highlighting the importance of sustainable water resource management in the face of changing climate patterns.

Year Completed

1989

Dam Length

900

Dam Height

30

River Or Stream

TR-DECKER CREEK

Primary Dam Type

Earth

Surface Area

4

Hydraulic Height

31

Drainage Area

0.3

Nid Storage

111

Structural Height

36

Hazard Potential

Low

Foundations

Soil

Nid Height

36
       
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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.