Allgier Lake Dam Reservoir Report
Last Updated: December 6, 2025
Allgier Lake Dam, located in Wappapello, Missouri, was completed in 1968 and serves primarily for recreational purposes.
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Summary
This earth dam, standing at a height of 29 feet, holds back the waters of TR-Piney Creek, creating a surface area of 7.3 acres and a storage capacity of 26 acre-feet. With a low hazard potential and a moderate risk assessment rating, the dam is classified as uncontrolled with a spillway width of 20 feet.
The dam is constructed of stone core and soil foundation, with a structural height of 30 feet and a drainage area of 281.6 square miles. Despite its private ownership, the dam is not regulated or inspected by the state, and it has not been rated for its condition. While it may not be as large or heavily regulated as some other dams, Allgier Lake Dam still plays a vital role in providing recreational opportunities for the local community and visitors to the area.
For water resource and climate enthusiasts, the Allgier Lake Dam represents a small but significant piece of infrastructure in the St. Louis District. Its presence on TR-Piney Creek supports outdoor activities and water-based recreation, contributing to the overall enjoyment and conservation of natural resources in the region. As a relatively low-hazard structure with moderate risk, the dam stands as a testament to responsible water management and serves as a reminder of the importance of maintaining and monitoring our water resources for both human use and environmental health.
Year Completed |
1968 |
Dam Length |
275 |
Dam Height |
29 |
River Or Stream |
TR-PINEY CREEK |
Primary Dam Type |
Earth |
Surface Area |
7.3 |
Hydraulic Height |
28 |
Drainage Area |
281.6 |
Nid Storage |
26 |
Structural Height |
30 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
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 |
|---|---|---|
Silver Mines Recreation Area
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Silver Mines
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Marble Creek Recreation Area
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Marble Creek Rec Area
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Allgier 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