Grant City Dam Reservoir Report

Last Updated: December 16, 2025

Grant City Dam, located in Worth, Missouri, serves as a vital water supply structure along the TR-Marlowe Creek.


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Summary

Owned by the local government, this earth dam stands at a height of 25 feet and has a storage capacity of 94 acre-feet. With a primary purpose of water supply, the dam has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment.

Although the dam has not been inspected in recent years, its importance in providing water to the surrounding area cannot be understated. Despite its modest size with a surface area of 7 acres and a drainage area of 265 square miles, Grant City Dam plays a crucial role in ensuring a stable water supply for the community. With its location in a rural area and low hazard potential, the dam continues to be a reliable source of water for the residents of Worth, Missouri.

As a key structure in the region, Grant City Dam exemplifies the importance of local government ownership in managing water resources effectively. While the dam may not have undergone recent inspections or assessments, its low hazard potential and primary purpose of water supply highlight its significance in providing a sustainable water source for the community. With its earth dam design and buttress core type, Grant City Dam stands as a testament to the essential role of water resource management in mitigating climate-related challenges.

Dam Height

25

River Or Stream

TR-MARLOWE CREEK

Primary Dam Type

Earth

Surface Area

7

Drainage Area

265

Nid Storage

94

Structural Height

25

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

25
       
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.