Dd No 104 Reservoir Report

Last Updated: December 5, 2025

Dd No 104 is a flood risk reduction dam located in Lyon County, Kansas, along Elm Creek.


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Summary

Built in 1997 by DP Engineers, this earth dam stands at 27 feet tall and stretches 700 feet in length, with a storage capacity of 451.3 acre-feet. Despite being deemed as low hazard potential, the dam serves a vital role in protecting the surrounding area from potential flooding events.

Managed by the Kansas Department of Agriculture, Dd No 104 is state regulated and regularly inspected for safety and compliance. With a moderate risk assessment rating, the dam is equipped with an uncontrolled spillway and has a normal storage capacity of 47.09 acre-feet. Although the dam is not rated in terms of condition assessment, it serves as a crucial infrastructure for flood control and management in the region.

Situated within the Tulsa District of the US Army Corps of Engineers, Dd No 104 plays a key role in mitigating flood risks and ensuring the safety of local communities. With its strategic location and purposeful design, this dam stands as a testament to effective water resource management and climate resilience efforts in the state of Kansas.

Year Completed

1997

Dam Length

700

Dam Height

27

River Or Stream

ELM CREEK

Primary Dam Type

Earth

Surface Area

11.56

Drainage Area

1.08

Nid Storage

451.3

Outlet Gates

None

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

27
       
Seasonal Comparison

Weather Forecast

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.