Red Rock No. 1 Reservoir Report
Nearby: Cold Springs Reservoir #1 Spaulding
Last Updated: December 5, 2025
Red Rock No.
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Summary
1, also known as Dodge Reservoir, is a privately owned earth dam located in Ravendale, California, along the Red Rock Creek. Built in 1893, this historic structure stands at a height of 63 feet and has a storage capacity of 10,000 acre-feet. The dam primarily serves for irrigation and water supply purposes, supporting the local agricultural community in Lassen County.
Managed by the California Department of Water Resources (DWR) under the Safety of Dams program, Red Rock No. 1 is subject to regular inspections and enforcement measures to ensure its structural integrity and safety. The dam has a significant hazard potential but has been assessed as satisfactory in condition as of September 2017. With a drainage area of 43.5 square miles and a hydraulic height of 57.9 feet, this reservoir plays a crucial role in water resource management and climate resilience efforts in the region.
Despite its age, Red Rock No. 1 continues to provide essential water supply services, demonstrating the enduring importance of historical dams in sustaining communities and ecosystems. As a key component of the local water infrastructure, this earth dam serves as a testament to the resilience and adaptability of water resource systems in the face of changing environmental conditions. For water resource and climate enthusiasts, Red Rock No. 1 offers a fascinating case study on the intersection of heritage conservation, water management, and climate adaptation in California's diverse landscape.
Year Completed |
1893 |
Dam Length |
485 |
Dam Height |
63 |
River Or Stream |
Red Rock Creek |
Primary Dam Type |
Earth |
Surface Area |
491 |
Hydraulic Height |
57.9 |
Drainage Area |
43.5 |
Nid Storage |
10000 |
Hazard Potential |
Significant |
Nid Height |
63 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Sf Pit R Nr Likely Ca
|
9cfs |
Pit R Nr Canby Ca
|
56cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Red Rock No. 1