Amax Impoundment A Dam Reservoir Report
Nearby: Mononame 41 Magmont Tailings Dam
Last Updated: January 11, 2026
Amax Impoundment A Dam, located in Iron County, Missouri, was completed in 1977 and stands at a height of 25 feet with a storage capacity of 54 acre-feet.
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Summary
Situated on TR Crooked Creek, this privately-owned Earth dam serves a primary purpose of "Other" and has a low hazard potential. With a normal storage of 25 acre-feet and a surface area of 4 acres, the dam plays a crucial role in managing water resources in the area.
Despite being privately owned, Amax Impoundment A Dam is not regulated by the state and does not have state jurisdiction. The dam, designed as a Buttress type structure, is not currently rated for its condition and does not have an Emergency Action Plan in place. The surrounding area has a drainage area of 80 square miles, highlighting the importance of this dam in maintaining water quality and quantity in the region. With its relatively low hazard potential, Amax Impoundment A Dam remains a vital component of the water resource infrastructure in Iron County.
The dam, situated in the St. Louis District, does not have any associated structures or locks. Despite its non-Federal ownership, the facility has not been inspected recently, and its risk assessment and management measures are not clearly defined. As a point of interest for water resource and climate enthusiasts, Amax Impoundment A Dam represents a valuable but potentially understudied component of the local hydrological landscape, warranting further investigation and monitoring to ensure its continued effectiveness and safety.
Year Completed |
1977 |
Dam Height |
25 |
River Or Stream |
TR CROOKED CREEK |
Primary Dam Type |
Earth |
Surface Area |
4 |
Drainage Area |
80 |
Nid Storage |
54 |
Structural Height |
25 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
25 |
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 |
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Ozark Trail Gunstock Hollow
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Panther Branch
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Council Bluff Recreation Area
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Council Bluff - Wild Boar Ridge
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Red Bluff
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Amax Impoundment A Dam