Seeger
Seeger is an earth dam located in Marin County, California, built in 1961. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Seeger
Seeger is a dam in Marin, California. The dam is owned by Marin Municipal Water District (public utility). It impounds the Nicasio Creek near Point Reyes Station.
The dam stands 115 feet tall and stretches 400 feet across, creates a reservoir covering 845 acres, has a maximum storage capacity of 22,400 acre-feet, and collects water from a drainage area of 35 square miles. Completed in 1961, the structure is well into its service life at over 50 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 09/12/2024.
At 115 feet, this dam is taller than 98% of all dams in the United States.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The California dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | California |
| County | Marin |
| Nearest City | Point Reyes Station |
| River/Stream | Nicasio Creek |
| Coordinates | 38.07700, -122.75520 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 115 ft |
| Dam Height | 115 ft |
| Dam Length | 400 ft |
| Year Completed | 1961 (65 years old) |
Storage & Hydraulics
| NID Storage | 22,400 acre-ft |
| Max Storage | 22,400 acre-ft |
| Surface Area | 845 acres |
| Drainage Area | 35 sq mi |
Ownership & Safety
| Purpose | Other |
| Owner | Marin Municipal Water District |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/12/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CA00209 |
| Federal ID | CA00209 |
| More Info | State Dam Safety Program |