Cloverswale Reservoir Report
Last Updated: December 5, 2025
Cloverswale is a privately owned dam located in Canby, California, specifically on Tr Witcher Creek.
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Summary
Built in 1973, this earth-type dam stands at a height of 21 feet and has a hydraulic height of 16.5 feet. With a storage capacity of 4620 acre-feet, Cloverswale primarily serves the purpose of water supply for irrigation and other uses in the area. The dam has a low hazard potential and has been assessed to be in satisfactory condition as of September 2017.
Managed by the California Department of Water Resources (DWR) under the Safety of Dams program, Cloverswale is regulated, permitted, inspected, and enforced by the state authorities. The dam has a drainage area of 4.7 square miles and a surface area of 462 acres. While no spillway information is provided, the dam has a length of 490 feet and is situated within Modoc County, California. Despite its modest size, Cloverswale plays a crucial role in ensuring water supply reliability in the region, highlighting the importance of such infrastructure for water resource management and climate resilience efforts.
With its strategic location and function, Cloverswale serves as a vital water management structure in the area, contributing to irrigation and water supply needs. The dam's association with the Tr Witcher Creek and its storage capacity of 4620 acre-feet make it a significant component of the local water infrastructure. Additionally, the regular inspections and state oversight indicate a commitment to maintaining the dam's safety and functionality, underscoring the importance of proper dam management in safeguarding water resources and mitigating potential risks associated with dam infrastructure.
Year Completed |
1973 |
Dam Length |
490 |
Dam Height |
21 |
River Or Stream |
Tr Witcher Crk |
Primary Dam Type |
Earth |
Surface Area |
462 |
Hydraulic Height |
16.5 |
Drainage Area |
4.7 |
Nid Storage |
4620 |
Hazard Potential |
Low |
Nid Height |
21 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Reservoir F Campground
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Reservoir F
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Howard's Gulch Campground
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Howards Gulch
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Reservoir C Campground
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Reservoir C
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Cloverswale
Duncan North Boating Site