Marina Lagoon
Key Takeaway
Marina Lagoon is classified as low hazard in California. It was completed in 1953 and is 73 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Height | 17 ft (taller than 11.1% in CA) |
| Dam Length | 350 ft |
| Dam Type | Earth |
| Max Storage | 1.6K acre-ft |
| Surface Area | 200 acres |
| Drainage Area | 9 sq mi |
| Year Completed | 1953 (73 years old) |
| NID ID | CA01429 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
City of San Mateo
Local Government
Nearby Dams
Laurel Creek
San Mateo, CA
High Hazard 40 ftNotre Dame
San Mateo, CA
High Hazard 51 ftCanada Road
San Mateo, CA
Low Hazard 52 ftLower Crystal Springs
San Mateo, CA
High Hazard 149 ftCrocker
San Mateo, CA
High Hazard 45 ftSpencer Lake
San Mateo, CA
High Hazard 87 ftEmerald Lake 1 Lower
San Mateo, CA
High Hazard 57 ftSan Andreas
San Mateo, CA
High Hazard 107 ftFrequently Asked Questions
What is the hazard classification of Marina Lagoon?
Marina Lagoon is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Marina Lagoon?
Marina Lagoon is owned by City of San Mateo (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Marina Lagoon built?
Marina Lagoon was completed in 1953, making it 73 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 Marina Lagoon?
Marina Lagoon 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 Marina Lagoon?
Marina Lagoon has a dam height of 17 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 Marina Lagoon last inspected?
Marina Lagoon was last inspected on June 22, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.