Gilbert Run Dam 3 (Jameson Dam)
Key Takeaway
Gilbert Run Dam 3 (Jameson Dam) is classified as high hazard in Maryland. It was completed in 1964 and is 62 years old. Its primary use is flood risk reduction. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 37 ft (taller than 83.2% in MD) |
| Dam Length | 950 ft |
| Dam Type | Earth |
| Max Storage | 2.9K acre-ft |
| Normal Storage | 205 acre-ft |
| Surface Area | 47 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 8,900 cfs |
| Year Completed | 1964 (62 years old) |
| Year Modified | 1964 |
| NID ID | MD00038 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Gilbert Run Watershed Assoc
Local Government
Nearby Dams
Gilbert Run Dam 2 (Wheatley)
Charles, MD
Significant Hazard 37 ftGilbert Run Dam 1 (Trinity Church)
Charles, MD
Significant Hazard 41 ftMc Allister Pond No. 1
Charles, MD
Low Hazard 22 ftStarkey Pond
Calvert, MD
Low Hazard 11 ftWestlake Village Lake 3
Charles, MD
Low Hazard 11 ftStoneleigh Community Pond (Stoneleigh Court)
Calvert, MD
Significant Hazard 24 ftFrequently Asked Questions
What is the hazard classification of Gilbert Run Dam 3 (Jameson Dam)?
Gilbert Run Dam 3 (Jameson Dam) is classified as High Hazard. Loss of human life is likely if the dam fails. 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 3 (Jameson Dam)?
Gilbert Run Dam 3 (Jameson Dam) 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 3 (Jameson Dam) built?
Gilbert Run Dam 3 (Jameson Dam) 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 3 (Jameson Dam)?
Gilbert Run Dam 3 (Jameson Dam) serves the following purposes: Flood Risk Reduction, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Gilbert Run Dam 3 (Jameson Dam)?
Gilbert Run Dam 3 (Jameson Dam) has a dam height of 37 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 3 (Jameson Dam) last inspected?
Gilbert Run Dam 3 (Jameson Dam) was last inspected on October 6, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.