Hein is a private water supply dam located in Wallace, California, on the Tr Bear Creek. Built in 1962, this earth dam stands at 16 feet high and spans 1250 feet in length, with a storage capacity of 145 acre-feet. The primary purpose of Hein is for irrigation and water supply, serving the local community with a surface area of 26 acres and a drainage area of 0.7 square miles.

Managed by the California Department of Water Resources (DWR) under the Safety of Dams program, Hein is regulated, permitted, inspected, and enforced by state authorities to ensure its structural integrity and safe operation. Despite its low hazard potential and satisfactory condition assessment, Hein undergoes regular inspections every year to maintain its safety standards. The dam's emergency action plan (EAP) status, inundation maps, risk assessment, and risk management measures are currently unspecified.

Located within the San Francisco District of the US Army Corps of Engineers (USACE), Hein plays a crucial role in providing water resources for the surrounding area. With its historical significance dating back to the early 1960s, Hein stands as a testament to California's commitment to water management and climate resilience in the face of evolving environmental challenges.