Gs Dd No A-36 (Ash) Reservoir Report

Last Updated: December 12, 2025

Gs Dd No A-36 (Ash) is a local government-owned dam located in Wetmore, Kansas, along the Spring Creek-TR.


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Summary

Built in 1987 by designer firm Speaker & King, this earth dam stands at a height of 31.6 feet and has a length of 360 feet, providing flood risk reduction to the area. With a storage capacity of 70.1 acre-feet and a drainage area of 0.22 square miles, the dam's primary purpose is flood risk reduction, with a low hazard potential and a moderate risk assessment score.

Managed by the Kansas Department of Agriculture, this dam is state-regulated and undergoes regular inspections to ensure its structural integrity. Despite its low hazard potential, the dam is not currently rated for its condition assessment, indicating the need for further evaluation. With a spillway width of 44 feet and a maximum discharge of 877 cubic feet per second, Gs Dd No A-36 (Ash) plays a crucial role in mitigating flood risks in the Nemaha County area. For water resource and climate enthusiasts, this dam serves as a vital infrastructure for flood control and protection of the surrounding community.

Year Completed

1987

Dam Length

360

Dam Height

31.6

River Or Stream

SPRING CREEK-TR

Primary Dam Type

Earth

Surface Area

2.57

Drainage Area

0.22

Nid Storage

70.1

Outlet Gates

None

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

32
       
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.