Spooner, located in Lassen, California, is a privately owned dam on Tr Ash Creek with a primary purpose of water supply for irrigation and other needs. Built in 1906, this earth dam stands at a height of 17 feet and has a storage capacity of 3,123 acre-feet. Its low hazard potential and satisfactory condition make it an important asset for water management in the region.

Managed by the California Department of Water Resources (DWR) and subject to state regulation, inspection, and enforcement, Spooner plays a crucial role in providing water to the surrounding area. The dam's location in Ash Valley, along with its efficient design by the Natural Resources Conservation Service, ensures the reliable supply of water for agricultural and domestic use. With a drainage area of 6.6 square miles and a surface area of 635 acres, Spooner contributes significantly to the water resources of the region.

Despite its age, Spooner remains a vital infrastructure for water management in California, operating with a focus on water supply reliability and safety. Regular inspections and maintenance ensure that the dam continues to serve its purpose effectively, reflecting a commitment to sustainable water resource management in the face of changing climatic conditions. For water resource and climate enthusiasts, Spooner represents a blend of historical significance and contemporary relevance in the realm of water infrastructure.