The Terminal Northeast Auxiliary Dam, also known as Northeast Dam, is a vital water resource infrastructure located in Solano, California. Constructed in 1959 by the Bureau of Reclamation, this Earth-type dam stands at a height of 28 feet and has a capacity for irrigation purposes with a storage volume of 119 acre-feet. The dam plays a crucial role in regulating the flow of the Green Valley Os River, ensuring water availability for agricultural activities in the region.

Managed by the Bureau of Reclamation, the Terminal Northeast Auxiliary Dam has a low hazard potential but is associated with high risk due to its age and condition assessment not being available. The dam does not have a spillway, locks, or outlet gates, emphasizing its straightforward design focused on irrigation storage. While it has not been modified over the years, regular inspections are conducted to ensure the structural integrity of the dam and safeguard against any potential risks to the surrounding area.

For water resource and climate enthusiasts, the Terminal Northeast Auxiliary Dam serves as a testament to the importance of maintaining and managing critical infrastructure for sustainable water management. With its primary purpose being irrigation, this dam stands as a key component in the region's water supply system, highlighting the intersection of engineering, environmental conservation, and agricultural needs in California.