Mononame791 Reservoir Report

Last Updated: December 12, 2025

Mononame791 is a privately owned dam located in Platte, Missouri, near Kansas City.


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Summary

Built in 1969, this earth dam stands at a height of 34 feet and serves primarily for recreational purposes. With a storage capacity of 164 acre-feet, it plays a crucial role in providing water resources for the surrounding area. However, due to its high hazard potential, the dam requires regular inspections to ensure its safety and structural integrity.

Situated on Line Creek, Mononame791 is managed by the Kansas City District and falls under the jurisdiction of the state of Missouri. Despite not being regulated or permitted by the state, the dam poses significant risks in case of failure, warranting the need for emergency action plans and risk assessments. With its condition currently not rated and last inspected in 1978, there is a pressing need for updated evaluations and maintenance to mitigate potential dangers and protect the local community and environment from the impacts of a dam failure.

As a key structure in the region's water resource infrastructure, Mononame791 highlights the importance of proper maintenance and monitoring of dams to ensure public safety and environmental sustainability. With its high hazard potential and limited recent assessments, it serves as a reminder of the critical role that water resource management and climate adaptation play in safeguarding communities against the threats of dam failures and water-related disasters.

Year Completed

1969

Dam Height

34

River Or Stream

LINE CREEK

Primary Dam Type

Earth

Surface Area

9

Drainage Area

95

Nid Storage

164

Structural Height

34

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

34
       
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.