Walnut Hollow Lake Dam Reservoir Report
Last Updated: December 5, 2025
Walnut Hollow Lake Dam, located in Iron County, Missouri, was completed in 1975 with a primary purpose of recreation.
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Summary
This privately owned earth dam stands at a height of 32 feet and has a storage capacity of 120 acre-feet. The dam overlooks the TR-Big Creek river and covers a surface area of 7 acres, providing a serene and picturesque setting for water resource and climate enthusiasts to explore.
Despite its recreational allure, Walnut Hollow Lake Dam is classified as having a high hazard potential, although its condition is currently not rated. The dam has not undergone inspection since 1980, raising concerns about its safety and maintenance. Furthermore, there is no Emergency Action Plan (EAP) in place, and crucial risk management measures remain unspecified. As climate change continues to impact water resources, the need for proactive monitoring and maintenance of dams like Walnut Hollow Lake Dam becomes increasingly vital.
With its unique design and stunning natural surroundings, Walnut Hollow Lake Dam offers a captivating destination for water resource and climate enthusiasts in Missouri. However, the dam's high hazard potential and lack of recent inspections underscore the importance of ongoing monitoring and risk management to ensure the safety and longevity of this recreational structure. As the impacts of climate change become more pronounced, the need for proactive measures to safeguard water resources and infrastructure like Walnut Hollow Lake Dam will only grow in significance.
Year Completed |
1975 |
Dam Height |
32 |
River Or Stream |
TR-BIG CREEK |
Primary Dam Type |
Earth |
Surface Area |
7 |
Drainage Area |
35 |
Nid Storage |
120 |
Structural Height |
32 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
32 |
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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Highway K - Clearwater Lake
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Marble Creek Recreation Area
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Marble Creek Rec Area
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Walnut Hollow Lake Dam
Forest Boundary At North Section Line Of Sec 4, T33N, R5E To Forest Boundary At South Section Line Of Sec 35, T32N, R5E