Tinkers Creek Regional Swm Pond No. 8 Reservoir Report

Last Updated: December 5, 2025

Tinkers Creek Regional Stormwater Pond No.


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Summary

8, also known as Tinkers Creek Dam, is a vital structure located in Prince George's County, Maryland, designed for flood risk reduction along the Tinkers Creek-TR. Owned by the local government, this earth-type dam stands at a height of 17.5 feet and was completed in 1991. With a maximum storage capacity of 75.5 acre-feet and a normal storage of 15.7 acre-feet, the pond covers a surface area of 2.2 acres and serves a drainage area of 0.41 square miles.

This significant dam has a spillway type of 'Uncontrolled' and is inspected every 3 years, with the last assessment conducted in April 2021, reporting a satisfactory condition. With a hazard potential classified as 'Significant' and a moderate risk assessment rating, Tinkers Creek Regional Stormwater Pond No. 8 plays a crucial role in mitigating flood risks in the area. The dam's emergency action plan status, inundation maps, and risk management measures are currently unspecified, highlighting the need for ongoing monitoring and preparedness to ensure the safety and functionality of this essential water resource infrastructure.

As water resource and climate enthusiasts, understanding the importance of structures like Tinkers Creek Regional Stormwater Pond No. 8 is key to appreciating the complexities of managing water resources and mitigating flood risks in urban areas. With its strategic location on Temple Hill Rd and its role in protecting the local community from potential inundation, this dam stands as a testament to effective water resource management and the ongoing efforts to safeguard against natural disasters in Prince George's County, Maryland.

Year Completed

1991

Dam Length

375

Dam Height

17.5

River Or Stream

Tinkers Creek-TR

Primary Dam Type

Earth

Surface Area

2.2

Drainage Area

0.41

Nid Storage

44.8

Outlet Gates

Needle - 0

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.