Chace Valley Reservoir Report
Nearby: Albaugh No. 2 Myers
Last Updated: December 5, 2025
Chace Valley is a privately owned dam located in Lassen, California, specifically in the city of Adin.
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Summary
Built in 1955, this earth dam stands at 16 feet high with a hydraulic height of 11.5 feet, creating a reservoir with a storage capacity of 92 acre-feet. The primary purpose of Chace Valley is for water supply, specifically for irrigation and water supply needs in the area.
Managed by the California Department of Water Resources (DWR) under the Safety of Dams program, Chace Valley is regulated, permitted, inspected, and enforced to ensure its safety and functionality. With a low hazard potential and a satisfactory condition assessment, this dam plays a crucial role in managing water resources in the region. The dam is situated on Tr Butte Creek, within the San Francisco District of the US Army Corps of Engineers.
For water resource and climate enthusiasts, Chace Valley provides a fascinating look into the infrastructure that supports water supply in California. As a key player in the management of water resources in the region, Chace Valley highlights the importance of maintaining and regulating dams to ensure a sustainable water supply for both agricultural and domestic use. With its history dating back to the 1950s, this dam continues to serve the community while adhering to strict regulatory standards to ensure public safety and resource sustainability.
Year Completed |
1955 |
Dam Length |
910 |
Dam Height |
16 |
River Or Stream |
Tr Butte Creek |
Primary Dam Type |
Earth |
Surface Area |
30 |
Hydraulic Height |
11.5 |
Drainage Area |
1.5 |
Nid Storage |
92 |
Hazard Potential |
Low |
Nid Height |
16 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Pit R Nr Canby Ca
|
56cfs |
Sf Pit R Nr Likely Ca
|
7cfs |
Pit R Bl Pit No 1 Ph Nr Fall River Mills Ca
|
1470cfs |
Burney C A Burney Falls Nr Burney Ca
|
168cfs |
Hat C Nr Hat Creek Ca
|
141cfs |
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.
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Chace Valley