Cross Creek Ranch Reservoir Report

Last Updated: December 5, 2025

Cross Creek Ranch, located in Folsom, California, is a privately owned earth dam that was completed in 1949 for the primary purpose of water supply.


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Summary

The dam, standing at a height of 23 feet with a hydraulic height of 19.5 feet, holds a maximum storage capacity of 55 acre-feet of water from the Tr Webber Creek. With a low hazard potential and a satisfactory condition assessment, the dam is regulated, permitted, inspected, and enforced by the California Department of Water Resources' Safety of Dams division.

Managed by the Natural Resources Conservation Service, Cross Creek Ranch serves irrigation and water supply needs for the surrounding area. The dam spans 410 feet in length and covers a surface area of 11 acres, with a drainage area of 0.05 square miles. With a maximum discharge capacity of 128 cubic feet per second, the dam plays a crucial role in ensuring water availability and flood control in the region. Despite its age, the dam has shown to be in good working condition, meeting regulatory standards and providing reliable water storage for the community.

In the event of an emergency, the dam has an established Emergency Action Plan (EAP) to ensure proper response and mitigation measures. Regular inspections and maintenance activities are conducted to uphold the dam's integrity and safety. With its essential role in water resource management and climate resilience, Cross Creek Ranch stands as a vital infrastructure for sustaining water supply and protecting against potential hazards in the El Dorado County area.

Year Completed

1949

Dam Length

410

Dam Height

23

River Or Stream

Tr Webber Creek

Primary Dam Type

Earth

Surface Area

11

Hydraulic Height

19.5

Drainage Area

0.05

Nid Storage

55

Hazard Potential

Low

Nid Height

23
       
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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.