Samaria No 1 Lower, also known as Pleasantview Lower, is a privately owned dam located in Oneida, Idaho. Completed in 1934, this earthen dam stands at a height of 35.1 feet and has a hydraulic height of 29.6 feet. With a storage capacity of 559 acre-feet and a drainage area of 7.1 square miles, this dam plays a crucial role in managing water resources in the region.

Situated on the Malad River and Bear River, Samaria No 1 Lower has a spillway width of 13 feet and a maximum discharge capacity of 144 cubic feet per second. The dam's hazard potential is considered significant, but its condition assessment as of May 2017 was rated as fair. While the risk assessment for this dam is moderate, there are no specific risk management measures outlined for its operation.

Despite being privately owned, Samaria No 1 Lower falls under state regulation by the Idaho Department of Water Resources, with permitting, inspection, and enforcement processes in place. This dam not only serves as a vital infrastructure for water management but also poses challenges in terms of its hazard potential and risk assessment, highlighting the importance of ongoing monitoring and maintenance for water resource and climate enthusiasts in the area.