St Clair Farm Pond Reservoir Report

Last Updated: December 5, 2025

St Clair Farm Pond, located in Monrovia, Maryland, is a private recreational Earth dam constructed in 1968 by Samuel St Clair.


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Summary

The dam stands at a height of 18 feet, with a length of 396 feet, creating a storage capacity of 64 acre-feet and a surface area of 8.7 acres. The dam is regulated by the Maryland Dam Safety agency, with regular inspections ensuring its satisfactory condition.

The primary purpose of St Clair Farm Pond is recreation, offering opportunities for activities like fishing, boating, and wildlife viewing. The dam's spillway type is uncontrolled, with a width of 8 feet, and it has a significant hazard potential, with a moderate risk rating. Despite these considerations, the dam has been assessed as satisfactory, with emergency action plans in place to manage any potential risks effectively.

Water resource and climate enthusiasts can appreciate St Clair Farm Pond for its role in providing a recreational space while also being a regulated structure contributing to water management in the Frederick County area. With its history dating back to the late 1960s and ongoing maintenance to ensure safety, this Earth dam serves as a valuable resource for both human enjoyment and environmental preservation.

Year Completed

1968

Dam Length

396

Dam Height

18

River Or Stream

Church Branch, TR-Bush Creek

Primary Dam Type

Earth

Surface Area

8.7

Drainage Area

0.6

Nid Storage

64

Hazard Potential

Significant

Foundations

Unlisted/Unknown

Nid Height

18
       
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.