Gilbert Run Dam 1 (Trinity Church)

Trinity Church Run· Charles, Maryland· Built 1964· Earth· 41 ft tall
Significant Hazard Flood Risk Reduction Local Government

Key Takeaway

Gilbert Run Dam 1 (Trinity Church) is classified as significant hazard in Maryland. It was completed in 1964 and is 62 years old. Its primary use is flood risk reduction. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 41 ft (taller than 86.3% in MD)
Dam Length1,690 ft
Dam TypeEarth
Max Storage4.8K acre-ft
Normal Storage480 acre-ft
Surface Area73 acres
Drainage Area8 sq mi
Max Discharge6,100 cfs
Year Completed1964 (62 years old)
Year Modified1964
NID IDMD00037

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: Yes
Last Inspection: October 6, 2021
State Regulated: Yes
Regulatory Agency: MD Dam Safety

Ownership

Gilbert Run Watershed Assoc

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Gilbert Run Dam 1 (Trinity Church)?

Gilbert Run Dam 1 (Trinity Church) is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Gilbert Run Dam 1 (Trinity Church)?

Gilbert Run Dam 1 (Trinity Church) is owned by Gilbert Run Watershed Assoc (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Gilbert Run Dam 1 (Trinity Church) built?

Gilbert Run Dam 1 (Trinity Church) was completed in 1964, making it 62 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

What is the primary purpose of Gilbert Run Dam 1 (Trinity Church)?

Gilbert Run Dam 1 (Trinity Church) serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Gilbert Run Dam 1 (Trinity Church)?

Gilbert Run Dam 1 (Trinity Church) has a dam height of 41 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.

When was Gilbert Run Dam 1 (Trinity Church) last inspected?

Gilbert Run Dam 1 (Trinity Church) was last inspected on October 6, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.