New Melle Quarry Dam Reservoir Report

Last Updated: December 19, 2025

The New Melle Quarry Dam, located in St.


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Summary

Charles, Missouri, is a private dam that serves as a crucial water resource for the surrounding area. Completed in 1999, this earth dam stands at a height of 90 feet and has a storage capacity of 380 acre-feet. With a drainage area of 63 square miles and a maximum discharge rate of 2787 cubic feet per second, the dam plays a vital role in managing water flow and ensuring water security for the community.

Managed by the DAM AND RESERVOIR SAFETY PROG in Missouri, the New Melle Quarry Dam is subject to regular inspections, with its condition assessed as satisfactory during the most recent inspection in 2007. Despite being classified as having a high hazard potential, the dam has a history of meeting safety guidelines and maintaining a satisfactory condition. With a spillway width of 0 feet and no associated locks, the dam primarily serves the purpose of water storage and flood control, contributing to the overall water management infrastructure in the region.

Overall, the New Melle Quarry Dam stands as a significant engineering feat, providing essential water storage and flood control capabilities for the community. As a private structure regulated by the state, the dam's design and construction demonstrate a commitment to water resource management and ensuring the safety of the surrounding area. With a focus on sustainability and efficient water utilization, the dam plays a crucial role in mitigating the impact of climate change on water resources in the region.

Year Completed

1999

Dam Length

1230

Dam Height

90

River Or Stream

UNNAMED TRIB FEMME OSAGE CRK

Primary Dam Type

Earth

Surface Area

12

Hydraulic Height

88

Drainage Area

63

Nid Storage

380

Structural Height

90

Hazard Potential

High

Foundations

Rock

Nid Height

90
       
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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.