Harcomo Lake Dam Reservoir Report
Last Updated: December 13, 2025
Harcomo Lake Dam, located in Pattonsburg, Missouri, serves as a crucial structure for debris control on Polecat Creek.
°F
°F
mph
Wind
%
Humidity
Summary
Built in 1978, this earth dam stands at a height of 20 feet and has a storage capacity of 86 acre-feet. Its primary purpose includes fire protection, stock, and serving as a small fish pond, making it a versatile resource for the local community.
With a low hazard potential, Harcomo Lake Dam is not rated for its condition assessment, but it continues to fulfill its intended functions effectively. Despite not being regulated or inspected by state authorities, this private-owned dam plays a vital role in managing water resources in the area. The dam's location in Harrison County, Missouri, contributes to its significance in maintaining the ecological balance and providing recreational opportunities for residents.
While lacking certain regulatory oversight, Harcomo Lake Dam remains a valuable asset for water management and environmental conservation in the region. Its role in debris control and water storage highlights the importance of such structures in safeguarding local ecosystems and supporting sustainable development practices. As water resource and climate enthusiasts, understanding the significance of dams like Harcomo Lake Dam can deepen appreciation for the complexities of managing water resources in a changing climate.
Year Completed |
1978 |
Dam Height |
20 |
River Or Stream |
TR-POLECAT CREEK |
Primary Dam Type |
Earth |
Surface Area |
8 |
Drainage Area |
110 |
Nid Storage |
86 |
Structural Height |
20 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
East Fork Big Creek Near Bethany
|
4cfs |
Thompson River At Trenton
|
137cfs |
Grand River Near Gallatin
|
75cfs |
Thompson River At Davis City
|
22cfs |
Medicine Creek Near Laredo
|
21cfs |
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.
Harcomo Lake Dam