Snowden Pond Reservoir Report

Last Updated: December 5, 2025

Snowden Pond, located in Prince George's County, Maryland, is a Federal-owned water resource managed by the U.S.


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Summary

Fish and Wildlife Service. This picturesque fish and wildlife pond was completed in 1947 and serves as a vital habitat for various species in the area. The dam, primarily constructed of earth, stands at a height of 21 feet and has a storage capacity of 97 acre-feet, with a surface area of 7.4 acres.

Despite its low hazard potential, Snowden Pond's condition assessment in 2015 deemed it unsatisfactory, highlighting the need for maintenance and improvements. The pond's very high risk rating underscores the importance of ongoing risk management measures to ensure its safety and functionality. With a controlled spillway and valve outlet gates, the pond plays a crucial role in water management and conservation efforts in the region.

With its scenic surroundings and ecological significance, Snowden Pond is not only a valuable resource for wildlife but also a key component of the local ecosystem. As a regulated water structure under Maryland Dam Safety jurisdiction, ongoing inspections and enforcement ensure the safety and integrity of the dam. For water resource and climate enthusiasts, Snowden Pond presents a unique opportunity to appreciate the intersection of human infrastructure with natural landscapes and the importance of sustainable water management practices in mitigating environmental risks.

Years Modified

1990 - Hydraulic

Year Completed

1947

Dam Length

620

Dam Height

21

River Or Stream

PATUXENT-TR

Primary Dam Type

Earth

Surface Area

7.4

Hydraulic Height

20

Drainage Area

0.32

Nid Storage

97

Structural Height

21

Outlet Gates

Valve

Hazard Potential

Low

Nid Height

21
       
Seasonal Comparison

Weather Forecast

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.