Summary
Completed in 1996, this offstream dam stands at a height of 61 feet with a hydraulic height of 57 feet. It has a storage capacity of 300 acre-feet and covers a surface area of 14 acres, serving its primary purpose of water supply for the region.
Managed by the California Department of Water Resources, Sea Ranch is regulated, permitted, inspected, and enforced to ensure its safety and compliance with state regulations. Despite its low hazard potential, the dam is assessed to be in satisfactory condition as of September 2017. With the oversight of state agencies and regular inspections, Sea Ranch continues to provide reliable water storage for the surrounding area while mitigating potential risks associated with its operation. Water resource and climate enthusiasts can appreciate Sea Ranch as a vital infrastructure contributing to the sustainable management of water resources in California.
Year Completed |
1996 |
Dam Length |
2500 |
Dam Height |
61 |
River Or Stream |
Offstream |
Primary Dam Type |
Earth |
Surface Area |
14 |
Hydraulic Height |
57 |
Drainage Area |
0.04 |
Nid Storage |
300 |
Hazard Potential |
Low |
Nid Height |
61 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Nf Gualala R Ab Sf Gualala R Nr Gualala Ca
|
318cfs |
Sf Gualala R Nr The Sea Ranch Ca
|
3710cfs |
Russian R Nr Cloverdale Ca
|
8000cfs |
Russian R Nr Hopland Ca
|
4160cfs |
Big Sulphur C Nr Cloverdale Ca
|
2440cfs |
Austin C Nr Cazadero Ca
|
1790cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Sea Ranch