Cook Dam Reservoir Report
Last Updated: December 20, 2025
Cook Dam, located on the West Locust Creek in Sullivan, Missouri, serves as a vital structure for grade stabilization.
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Summary
This privately owned earth dam, standing at 27 feet tall with a hydraulic height of 21 feet, was completed in 1995 and has a storage capacity of 63 acre-feet. The dam's primary purpose is to prevent erosion and stabilize the surrounding area, with a low hazard potential and a moderate risk assessment rating.
With a spillway width of 30 feet and uncontrolled spillway type, Cook Dam has a maximum discharge capacity of 120 cubic feet per second. The dam's surface area covers 6 acres, with a drainage area of 192 acres, making it an essential component of the local water resource management system. Despite not being regulated by the state or federal agencies, Cook Dam plays a crucial role in maintaining the ecological balance of the region and ensuring water security for nearby communities.
Although the dam's condition assessment is currently not rated, its strategic location and design contribute to the overall resilience of the area against potential flooding events. With a focus on grade stabilization and water management, Cook Dam stands as a testament to sustainable infrastructure development and the importance of proactive risk management in the face of climate change challenges.
Year Completed |
1995 |
Dam Length |
456 |
Dam Height |
27 |
River Or Stream |
WEST LOCUST CREEK |
Primary Dam Type |
Earth |
Surface Area |
6 |
Hydraulic Height |
21 |
Drainage Area |
192 |
Nid Storage |
63 |
Structural Height |
25 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
27 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Medicine Creek Near Laredo
|
6cfs |
Locust Creek Near Linneus
|
35cfs |
Thompson River At Trenton
|
111cfs |
Chariton River At Novinger
|
48cfs |
Grand River At Chillicothe
|
361cfs |
Chariton River At Livonia
|
45cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Cook Dam