Davis Reservoir Report

Last Updated: December 5, 2025

Davis is a private water supply dam located in Napa, California, along the Tr Pope Creek.


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Summary

Built in 1955, this earth dam stands at 42 feet high and has a storage capacity of 140 acre-feet. Its primary purpose is for irrigation and water supply, serving the local community with essential resources. The dam is regulated by the Department of Water Resources (DWR) and is subject to state inspection and enforcement to ensure its safety and functionality.

Despite its age, Davis Dam remains in satisfactory condition with a significant hazard potential. Regular inspections are conducted to assess its structural integrity and emergency preparedness. The dam's associated structures are minimal, and it is managed by the Natural Resources Conservation Service. With a drainage area of 0.15 square miles, Davis Dam plays a crucial role in water management and supply for the region, supporting agricultural and residential needs.

Under the oversight of the San Francisco District of the US Army Corps of Engineers, Davis Dam continues to provide vital water resources to the community. Its location in a region prone to climate change impacts highlights the importance of maintaining and monitoring its condition to ensure long-term water security. As a key infrastructure asset, Davis Dam reflects the ongoing efforts to balance water supply needs with environmental conservation in the face of changing climate patterns.

Year Completed

1955

Dam Length

897

Dam Height

42

River Or Stream

Tr Pope Creek

Primary Dam Type

Earth

Surface Area

9

Hydraulic Height

38

Drainage Area

0.15

Nid Storage

140

Hazard Potential

Significant

Nid Height

42
       
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.