Cattail Swamp Dam Reservoir Report

Last Updated: December 6, 2025

Cattail Swamp Dam, also known as Millstone Farm and Herman, is a recreation-focused earth dam located in New Kent, Virginia.


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Summary

The dam is regulated by the Department of Conservation and Recreation, with state jurisdiction, permitting, inspection, and enforcement all in place. Its primary purpose is for recreation, offering a serene spot for water resource and climate enthusiasts to enjoy the surrounding Cattail Swamp area.

Standing at a height of 20 feet, Cattail Swamp Dam has a storage capacity of 344 acre-feet, with a normal storage level of 134 acre-feet. Despite its undetermined hazard potential and not having a formal condition assessment, the dam remains a significant structure in the region. While the dam lacks specific details such as completion year and spillway type, its presence adds to the ecological and recreational value of the area.

Although lacking certain details and assessments, Cattail Swamp Dam serves as an important recreational and environmental asset in New Kent, Virginia. With a focus on providing a serene space for enthusiasts to appreciate the surrounding Cattail Swamp area, the dam's earth structure and regulatory oversight ensure its continued operation and safety for visitors to enjoy.

Dam Height

20

River Or Stream

CATTAIL SWAMP

Hydraulic Height

20

Nid Storage

344

Structural Height

20

Hazard Potential

Undetermined

Nid Height

20
       
Seasonal Comparison

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Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.