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ROLLINS

RESERVOIR LEVELS USBR RLL
July 12, 2025



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Rollins is a vital water resource infrastructure in California, serving multiple purposes including hydroelectric power generation, irrigation, recreation, and water supply. Constructed in 1965, this earth dam stands at a towering height of 228 feet and has a storage capacity of 65,988 acre-feet. Located on the Bear River in Nevada County, Rollins plays a crucial role in managing the region's water resources and supporting various water-related activities.

Managed by the Federal Energy Regulatory Commission, Rollins Dam is regulated, inspected, and enforced to ensure its safety and functionality. With a spillway width of 100 feet and a maximum discharge of 60,000 cubic feet per second, the dam has a high hazard potential and is subject to regular inspections and risk assessments. Despite its age, Rollins Dam continues to be a key asset in California's water infrastructure, providing essential services to the surrounding communities while maintaining a moderate risk level.

Situated at the Rd 174 bridge near Combie Dam, Rollins Dam not only contributes to water supply and energy generation but also offers recreational opportunities for the public. With its scenic location and significant impact on the local ecosystem, Rollins serves as a prime example of sustainable water resource management in the face of changing climate conditions. As climate enthusiasts and water resource advocates, the data on Rollins Dam highlights the importance of investing in and maintaining critical infrastructure to ensure the resilience of water systems in the face of climate challenges.

Storage 24hr Change -1%
Percent of Normal 72%
Minimum 41,155 acre-ft
2021-10-14
Maximum 68,572 acre-ft
2022-12-31
Average 64,852 acre-ft
Dam_Height 228
Hydraulic_Height 211
Drainage_Area 104
Year_Completed 1965
Nid_Storage 65988
Hazard_Potential High
Structural_Height 227.5
Primary_Dam_Type Earth
River_Or_Stream Bear River
Foundations Rock
Surface_Area 828
Dam_Length 1840
Nid_Height 228
       
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