Dd No 23-52 Reservoir Report

Last Updated: December 5, 2025

Dd No 23-52, also known as Mill Creek WS Joint District No 85, is a crucial water management structure located in Alma, Kansas.


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Summary

The dam is owned and regulated by the local government, specifically the Kansas Department of Agriculture, and serves the primary purpose of flood risk reduction along the Illinois Creek-TR. Constructed with an earth core and buttress design, the dam stands at a height of 53 feet and has a storage capacity of 490 acre-feet, with a normal storage level of 91.2 acre-feet.

With a low hazard potential and a moderate risk assessment rating, Dd No 23-52 plays a vital role in protecting the surrounding area from potential flooding events. The dam features an uncontrolled spillway with a width of 75 feet, ensuring efficient water discharge during times of high flow. Despite its importance, the dam's condition assessment is currently listed as "Not Rated," highlighting the need for regular inspections and maintenance to ensure its continued effectiveness in flood risk reduction.

Overall, Dd No 23-52 is a key water resource infrastructure in Wabaunsee County, Kansas, managed by local authorities to safeguard the community from the impacts of flooding. As climate change continues to pose challenges to water management systems, the importance of maintaining and monitoring structures like Dd No 23-52 cannot be overstated. Efforts to assess and address any potential risks associated with the dam are essential in ensuring its long-term functionality and resilience in the face of changing environmental conditions.

Dam Length

725

Dam Height

53

River Or Stream

ILLINOIS CREEK-TR

Primary Dam Type

Earth

Surface Area

10.5

Hydraulic Height

45

Nid Storage

490

Structural Height

53

Outlet Gates

None

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

53
       
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.