Arney Lake Dam Reservoir Report
Nearby: Hamilton Lake Dam Stoner Lake Dam
Last Updated: December 12, 2025
Arney Lake Dam, located in Harrison, Missouri, was completed in 1970 and serves multiple purposes including fire protection, stock, and recreational activities.
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Summary
Owned privately, this Rockfill dam stands at a height of 25 feet and has a storage capacity of 27 acre-feet. The dam sits on Trail Creek and covers a surface area of 2 acres, with a drainage area of 48 acres.
Despite being classified as having a low hazard potential, Arney Lake Dam has not been inspected for condition assessment and is currently rated as "Not Rated". Additionally, emergency action plans and risk management measures have not been documented or updated. The dam's primary purpose of providing fire protection and recreational opportunities highlights its importance in the local community, but its lack of regulation and oversight raises concerns among water resource and climate enthusiasts.
As an enthusiast interested in water resources and climate, the data surrounding Arney Lake Dam may raise red flags regarding its maintenance and safety protocols. With no recent inspections or documented emergency action plans, the potential risks associated with the dam's condition and management practices become apparent. This information underscores the importance of consistent monitoring and regulatory oversight to ensure the safety and integrity of crucial water infrastructure like Arney Lake Dam.
Year Completed |
1970 |
Dam Height |
25 |
River Or Stream |
TR-TRAIL CREEK |
Primary Dam Type |
Rockfill |
Surface Area |
2 |
Drainage Area |
48 |
Nid Storage |
27 |
Structural Height |
25 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
East Fork Big Creek Near Bethany
|
4cfs |
Thompson River At Trenton
|
143cfs |
Thompson River At Davis City
|
22cfs |
Grand River Near Gallatin
|
76cfs |
Medicine Creek Near Laredo
|
20cfs |
Grand River At Chillicothe
|
361cfs |
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.
Arney Lake Dam