Updegrave is a privately owned dam located in Winchester, Douglas County, Oregon. Completed in 1957, this Earth dam stands at 30 feet high and serves primarily for irrigation purposes along the North Umpqua River. With a storage capacity of 172 acre-feet and a surface area of 13.94 acres, Updegrave plays a crucial role in managing water resources in the area.

The dam's high hazard potential is closely monitored by the Oregon Water Resources Department, which regulates its operations, conducts regular inspections, and enforces safety measures. With a satisfactory condition assessment as of November 2020, Updegrave is equipped with Needle outlet gates and has a maximum discharge capacity of 90 cubic feet per second. Its location within the Portland District underscores the importance of this structure in supporting agricultural activities and water management in the region.

As a key component of the local water infrastructure, Updegrave represents a significant investment in enhancing water supply reliability for irrigation purposes. Despite its high hazard potential, the dam's satisfactory condition and regulatory oversight by the OWRD ensure that it continues to contribute to the sustainable utilization of water resources in the North Umpqua River watershed. With its role in water storage and management, Updegrave stands as a testament to the intersection of water resource management and climate resilience in Oregon's agricultural landscape.