Allmans Dam Reservoir Report
Last Updated: December 6, 2025
Allmans Dam, located in Albemarle, Virginia, is a privately owned earth dam primarily used for recreation purposes.
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Summary
With a height of 17 feet and a length of 400 feet, this dam creates a reservoir with a storage capacity of 76 acre-feet. Situated on tributary Rockcastle Creek, the dam is regulated by the Department of Conservation and Recreation in Virginia, ensuring proper inspection, permitting, and enforcement protocols are in place.
Despite its undetermined hazard potential and lack of a condition rating, Allmans Dam serves as a key feature in the local landscape, offering opportunities for irrigation and recreational activities. The dam has not been modified in recent years, indicating its stability and long-standing presence in the community. While emergency action plans and risk assessments are not currently in place, the dam continues to provide valuable benefits to both residents and visitors in the area.
As water resource and climate enthusiasts, the allure of Allmans Dam lies in its unique design, purpose, and location within the Norfolk District of Virginia. With Denver Riggleman representing the Congressional district, the dam plays a crucial role in managing water resources and supporting recreational opportunities for the surrounding community. While its specific volume and discharge capacities remain unknown, Allmans Dam stands as a testament to the importance of responsible dam ownership and management in the face of changing environmental conditions.
Dam Length |
400 |
Dam Height |
17 |
River Or Stream |
trib-ROCKCASTLE CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
17 |
Nid Storage |
76 |
Structural Height |
17 |
Hazard Potential |
Undetermined |
Nid Height |
17 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
James River At Scottsville
|
1470cfs |
Hardware River Bl Briery Run Nr Scottsville
|
52cfs |
Slate River Near Arvonia
|
68cfs |
Rockfish River Near Greenfield
|
33cfs |
Rivanna River At Palmyra
|
175cfs |
Mechums River Near White Hall
|
38cfs |
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.
Allmans Dam