Dolcini Reservoir Report

Last Updated: December 5, 2025

Dolcini is a privately owned dam located in Marin, California, along the Salmon Creek.


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Summary

Built in 1949, this earth-type dam stands at 35 feet high and spans 440 feet in length, with a storage capacity of 70 acre-feet. The primary purpose of Dolcini is to supply water for irrigation and domestic use, serving the local community while also supporting agriculture in the region.

Managed by the California Department of Water Resources (DWR) under the Safety of Dams program, Dolcini is subject to regular inspections and enforcement to ensure its safety and regulatory compliance. With a low hazard potential and a satisfactory condition assessment as of September 2017, Dolcini is considered a reliable water resource infrastructure. The dam is also equipped with emergency action plans, although details on their preparation and adherence to guidelines are not specified in the available data.

Overall, Dolcini plays a crucial role in water supply management in the area, contributing to the sustainability of irrigation practices and domestic water usage. As a key element in the local water infrastructure, maintaining Dolcini's integrity and safety is essential for water resource and climate enthusiasts who recognize the importance of such structures in ensuring water availability and security for communities and ecosystems alike.

Year Completed

1949

Dam Length

440

Dam Height

35

River Or Stream

Salmon Creek

Primary Dam Type

Earth

Surface Area

8

Hydraulic Height

31.2

Drainage Area

0.21

Nid Storage

70

Hazard Potential

Low

Nid Height

35
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.