Hardester North Reservoir Report

Last Updated: December 5, 2025

Hardester North, located in Pope Valley, California, is a privately owned dam that serves multiple purposes, including irrigation and water supply.


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Summary

Completed in 2003, this earth dam stands at a height of 36 feet and has a storage capacity of 150 acre-feet. With a drainage area of 0.07 square miles and a surface area of 7 acres, the dam plays a crucial role in managing water resources in the region.

Managed by the California Department of Water Resources' Safety of Dams program, Hardester North has a significant hazard potential but is currently in satisfactory condition. Regular inspections ensure its structural integrity, with the last assessment conducted in September 2017. The dam's primary source agency is California, and it falls under state jurisdiction for regulation, permitting, inspection, and enforcement, highlighting the importance placed on its safety and compliance with regulatory standards.

Located on Tr Burton Creek and part of the San Francisco District, Hardester North is a key component of the water infrastructure in Napa County. With Congressman Mike Thompson overseeing the area, the dam contributes to the region's water supply and plays a crucial role in supporting agricultural irrigation and other water-related needs. As a significant asset in the state's water management system, Hardester North exemplifies the importance of sustainable water resource management in the face of climate change challenges.

Year Completed

2003

Dam Length

1350

Dam Height

36

River Or Stream

Tr Burton Crrek

Primary Dam Type

Earth

Surface Area

7

Hydraulic Height

32

Drainage Area

0.07

Nid Storage

150

Hazard Potential

Significant

Nid Height

36
       
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.