Marina Lagoon
Low HazardSatisfactory ConditionEmergency Action Plan: No
Location
| County | San Mateo |
| River/Stream | Belmount Slough |
| Coordinates | 37.56930, -122.29130 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 350 ft |
| Year Completed | 1953 (73 years old) |
Storage & Hydraulics
| NID Storage | 1,600 acre-ft |
| Max Storage | 1,600 acre-ft |
| Surface Area | 200 acres |
| Drainage Area | 8 sq mi |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | City of San Mateo |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/01/2025 |
| Emergency Action Plan | No |