Beggs Reservoir Report
Nearby: Camanche Main Camanche Dike No. 3
Last Updated: December 5, 2025
Beggs, a privately owned dam located in San Joaquin, California along the Mokelumne River, serves as a crucial water supply source for irrigation and domestic use in the region.
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Summary
Constructed in 1971, this earth dam stands at a height of 40 feet with a storage capacity of 81 acre-feet. Despite its relatively low hazard potential and satisfactory condition assessment, Beggs is subject to state regulation, inspection, and enforcement by the Department of Water Resources, Safety of Dams division.
The dam's primary purpose of water supply highlights its importance in meeting the water needs of the local community and supporting agricultural activities in the area. With a drainage area of 0.1 square miles and a surface area of 8 acres, Beggs plays a significant role in managing water resources in the region. Additionally, its location within the San Francisco District of the US Army Corps of Engineers underscores the collaborative efforts between federal and state agencies in ensuring the safety and reliability of the dam.
Regular inspections, emergency preparedness plans, and risk assessment measures are essential components in maintaining the integrity and functionality of Beggs. The dam's satisfactory condition, low hazard potential, and compliance with state regulations demonstrate a commitment to safeguarding water resources and mitigating potential risks associated with dam operations. As water resource and climate enthusiasts, staying informed about the infrastructure and management practices of dams like Beggs is crucial for promoting sustainable water management and resilience in the face of changing environmental conditions.
Year Completed |
1971 |
Dam Length |
300 |
Dam Height |
40 |
River Or Stream |
Tr Mokelumne Rv |
Primary Dam Type |
Earth |
Surface Area |
8 |
Hydraulic Height |
36 |
Drainage Area |
0.1 |
Nid Storage |
81 |
Hazard Potential |
Low |
Nid Height |
40 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Cosumnes R A Michigan Bar Ca
|
62cfs |
Laguna C Nr Elk Grove Ca
|
1cfs |
Georgiana Slough Nr Sacramento R
|
2990cfs |
Sacramento R Ab Delta Cross Channel Ca
|
11300cfs |
Little Potato Slough A Terminous Ca
|
7590cfs |
Sacramento R Bl Georgiana Slough Ca
|
8680cfs |
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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