Hidden Valley Lake Dam Reservoir Report
Last Updated: December 14, 2025
Hidden Valley Lake Dam, located in Missouri, is a private dam with a primary purpose of recreation.
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Summary
This earth dam, made with stone core and rock foundation, stands at a height of 52 feet and stretches 830 feet in length. The dam has a storage capacity of 454 acre-feet, with a surface area of 28 acres and a drainage area of 134 square miles. The dam is in a high hazard potential classification but is currently rated as satisfactory in condition assessment.
Managed by the Dam and Reservoir Safety Program, Hidden Valley Lake Dam is regulated by the state of Missouri and undergoes regular inspections to ensure its safety. While the dam has uncontrolled spillways with a width of 3 feet, it has no outlet gates. The dam's risk assessment is moderate, with a risk management plan in place to address any potential issues. Despite its high hazard potential, the dam provides recreational opportunities for the community and contributes to the local ecosystem by managing water flow in the TR to Rocky Fork river.
Overall, Hidden Valley Lake Dam serves as a valuable resource for water recreation enthusiasts in Missouri. With its unique design and regulatory oversight, the dam plays a crucial role in maintaining water resources and managing risk in the region. As climate change continues to impact water availability and quality, the importance of dams like Hidden Valley Lake Dam in regulating water flow and providing recreational opportunities cannot be understated.
Dam Length |
830 |
Dam Height |
52 |
River Or Stream |
TR TO ROCKY FORK |
Surface Area |
28 |
Drainage Area |
134 |
Nid Storage |
454 |
Structural Height |
52 |
Outlet Gates |
None |
Hazard Potential |
High |
Foundations |
Rock |
Nid Height |
52 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Hidden Valley Lake Dam