Wasco, also known as W-47, is a federal-owned irrigation dam located in Tygh Valley, Oregon, along the Clear Creek river. Built in 1958 by the Bureau of Reclamation, this earth dam stands at 45 feet high and serves as a crucial water resource for the region. With a maximum storage capacity of 16,360 acre-feet and a normal storage of 11,869 acre-feet, Wasco plays a vital role in supporting agricultural activities in the area.

The dam has a high hazard potential and underwent structural modifications in 2000 to ensure its safety and functionality. Although the condition assessment is not available, regular inspections by the Bureau of Reclamation help maintain the dam's integrity. The emergency action plan (EAP) for Wasco was last revised in 2020, demonstrating a commitment to preparedness and risk management. Despite its age, Wasco continues to be a key component of the local water infrastructure, providing essential irrigation water to the surrounding community.

Water resource and climate enthusiasts will be captivated by the engineering feat of Wasco and its role in sustaining agriculture in the region. The collaboration between federal agencies and the local community to ensure the safety and reliability of the dam is a testament to the importance of water infrastructure in mitigating the impacts of climate change. As climate variability continues to pose challenges to water availability, dams like Wasco play a crucial role in managing and distributing water resources effectively.