Richward W Cook Jr. Reservoir Report

Last Updated: December 5, 2025

Richward W Cook Jr.


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Summary

is a private dam located in Sandy Hook, Missouri, along TR Little Moniteau Creek. Completed in 1961, this recreational dam stands at a height of 20 feet and has a storage capacity of 64 acre-feet. With a primary purpose of recreation and water supply, this earth dam with a buttress core type covers a surface area of 6 acres and serves a drainage area of 115 square miles.

Situated in Moniteau County, Missouri, Richward W Cook Jr. is owned by a private entity and is not regulated or inspected by the state. Despite its low hazard potential and not being rated for its condition assessment, this dam provides essential recreational opportunities and water supply benefits to the surrounding community. With a maximum storage capacity of 64 acre-feet and a normal storage level of 30 acre-feet, Richward W Cook Jr. serves as a vital resource for water enthusiasts and climate advocates in the region.

Managed by the St. Louis District of the US Army Corps of Engineers, Richward W Cook Jr. offers a tranquil oasis for outdoor activities while also supporting water supply needs. Although not currently assessed for its condition or equipped with emergency action plans, this dam continues to play a significant role in the local ecosystem. For water resource and climate enthusiasts, Richward W Cook Jr. stands as a testament to the importance of sustainable water management and recreational infrastructure in the face of changing environmental conditions.

Year Completed

1961

Dam Height

20

River Or Stream

TR LITTLE MONITEAU CREEK

Primary Dam Type

Earth

Surface Area

6

Drainage Area

115

Nid Storage

64

Structural Height

20

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

20
       
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.