Helvey Park Dam Reservoir Report

Last Updated: December 13, 2025

Located in Smithville, Missouri, Helvey Park Dam is a local government-owned structure primarily designed for recreation and water supply purposes.


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Summary

Built in 1960, this earth dam stands at a height of 36 feet and spans 800 feet in length, with a storage capacity of 203 acre-feet. The dam, situated on TR Wilkerson Creek, serves as a key feature in the region's water resource management and offers recreational opportunities for visitors.

Managed and regulated by the DAM AND RESERVOIR SAFETY PROG in Missouri, Helvey Park Dam has a low hazard potential and is deemed to be in satisfactory condition as of the last assessment in 2007. With a moderate risk assessment rating, the dam undergoes inspections every five years to ensure its structural integrity and overall safety. Despite being uncontrolled, the dam's spillway width of 43 feet allows for a maximum discharge of 200 cubic feet per second, further highlighting its importance in the area's flood control and water management strategies.

Water resource and climate enthusiasts visiting Helvey Park Dam can appreciate its role in providing both recreational opportunities and essential water supply services to the community. The dam's strategic location, design features, and regulatory oversight make it a noteworthy structure for those interested in the sustainable management of water resources and the impact of climate on infrastructure resilience.

Year Completed

1960

Dam Length

800

Dam Height

36

River Or Stream

TR WILKERSON CREEK

Primary Dam Type

Earth

Surface Area

12

Drainage Area

169

Nid Storage

203

Structural Height

36

Outlet Gates

None

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

36
       
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.