Anthony House Reservoir Report

Last Updated: December 5, 2025

Anthony House, also known as Wildwood Lake, is a privately owned water resource located in Marysville/Linda, California.


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Summary

Built in 1970, this earth dam stands at a height of 75 feet and has a storage capacity of 3840 acre-feet. Its primary purpose is for water supply, with additional uses for recreation. The dam spans 460 feet in length and sits on Deer Creek, within the San Francisco District.

Managed by the California Department of Water Resources (DWR) for safety and regulation, Anthony House has a high hazard potential but is currently in satisfactory condition as of the last assessment in September 2017. Regular inspections ensure its structural integrity and emergency preparedness, with inspection frequency set at once a year. The dam's proximity to the community underscores the importance of effective risk management and emergency response planning.

For water resource and climate enthusiasts, Anthony House presents a significant structure within the Nevada County, California landscape. Its critical role in providing water supply and recreational opportunities highlights the intersection of human development and natural resource management. As a privately owned dam with state regulation and oversight, its maintenance and operation are crucial for ensuring the safety of downstream communities and the sustainability of the surrounding ecosystem.

Year Completed

1970

Dam Length

460

Dam Height

75

River Or Stream

Deer Creek

Primary Dam Type

Earth

Surface Area

290

Hydraulic Height

62.8

Drainage Area

54.5

Nid Storage

3840

Hazard Potential

High

Nid Height

75
       
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.