Oak-Middle 57-A Reservoir Report

Last Updated: December 6, 2025

Oak-Middle 57-A is a vital earth dam located in Seward, Nebraska, designed by the USDA NRCS in 1968 for flood risk reduction along the TR-PEANUT CREEK.


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Summary

With a height of 43 feet and a length of 1530 feet, this dam provides storage of 1697 acre-feet and serves a drainage area of 5.9 square miles. Despite its low hazard potential, the dam is regularly inspected by NE DNR and deemed to be in satisfactory condition as of May 2018.

Owned by the local government, Oak-Middle 57-A plays a crucial role in mitigating flooding in the region, with a primary purpose of flood risk reduction. The dam's structure consists of stone core and soil foundation, ensuring its stability. Managed by the Natural Resources Conservation Service, this dam operates under state regulatory oversight, including permitting, inspection, and enforcement by NE DNR, emphasizing the importance of maintaining its integrity for community safety.

Situated in Raymond, Nebraska, Oak-Middle 57-A is a significant piece of infrastructure overseen by the Kansas City District. With Jeff Fortenberry (R) as the Congressional representative for the area, the dam contributes to the overall water resource management efforts in the region. As climate change continues to impact water resources, Oak-Middle 57-A stands as a critical asset in safeguarding the community against potential flood risks, highlighting the importance of proactive maintenance and monitoring for sustainable water management.

Year Completed

1968

Dam Length

1530

Dam Height

43

River Or Stream

TR-PEANUT CREEK

Primary Dam Type

Earth

Surface Area

55

Hydraulic Height

43

Drainage Area

5.9

Nid Storage

1697

Structural Height

48

Hazard Potential

Low

Foundations

Soil

Nid Height

48
       
Seasonal Comparison

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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.