Knapp Dam Reservoir Report
Last Updated: December 20, 2025
Knapp Dam, located in Louisa, Virginia, is a private structure primarily used for recreation purposes.
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Summary
This earth-type dam stands at a height of 22.6 feet with a hydraulic height matching that measurement. The dam has a storage capacity of 87.9 acre-feet, with a normal storage level of 20.7 acre-feet, providing ample opportunities for outdoor activities in the surrounding area.
Managed by the Department of Conservation and Recreation in Virginia, Knapp Dam is regulated, inspected, and enforced by the state, ensuring its safety and compliance with regulations. Despite its low hazard potential and fair condition assessment, the dam has not been modified in recent years. The last inspection took place in February 2013, with an inspection frequency of once per year, indicating a commitment to monitoring and maintaining the dam's integrity.
Water resource and climate enthusiasts will appreciate Knapp Dam for its contribution to the local ecosystem and recreational opportunities. The dam's presence on TR-BUCK BRANCH, part of the Baltimore District, adds to the natural beauty and water resources of the area. With its state-regulated status and low hazard potential, Knapp Dam serves as a valuable asset for both the community and the environment.
Dam Height |
22.6 |
River Or Stream |
TR-BUCK BRANCH |
Primary Dam Type |
Earth |
Surface Area |
9.3 |
Hydraulic Height |
22.6 |
Nid Storage |
87.9 |
Structural Height |
22.6 |
Hazard Potential |
Low |
Nid Height |
23 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Rivanna River At Palmyra
|
520cfs |
N F Rivanna River Near Earlysville
|
123cfs |
Hardware River Bl Briery Run Nr Scottsville
|
124cfs |
Moormans River Near Free Union
|
67cfs |
James River At Scottsville
|
3600cfs |
Mechums River Near White Hall
|
145cfs |
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.
Knapp Dam