Curtis Dam, located in Amboy, Washington, is a privately owned earth dam that was completed in 1978 with a primary purpose of recreation. Standing at a hydraulic height of 15 feet and a structural height of 13.7 feet, the dam has a NID storage capacity of 24 acre-feet and a maximum storage capacity of 24 acre-feet. The normal storage capacity is 19.7 acre-feet, making it a significant water resource in the area.

The dam is regulated by the Washington Department of Ecology and undergoes regular inspections, with the last assessment in March 2018 deeming its condition as satisfactory. Despite being classified as having a high hazard potential, the dam is well-maintained and meets regulatory guidelines for emergency action preparedness. With a drainage area of 1.37 square miles and a maximum discharge of 32 cubic feet per second, Curtis Dam plays a crucial role in managing water resources in Clark County, Washington.

Enthusiasts interested in water resources and climate will find Curtis Dam to be a fascinating structure that not only provides recreational opportunities but also serves as a vital component of the local water management system. With its impressive storage capacity and regulatory oversight, the dam represents a balance between human intervention and environmental stewardship in maintaining a sustainable water supply for the region. Its strategic location and design make it an essential asset for the community, highlighting the importance of responsible dam management in the face of changing climate conditions.