Lower Rimrock Dam, located in Palisades, Washington, is a privately-owned structure regulated by the Washington Department of Ecology. Built in 1972, this rockfill dam on Mccarteney Creek serves primarily for recreational purposes, offering a surface area of 550 acres for water enthusiasts to enjoy. With a hydraulic height of 67 feet and a structural height of 55 feet, the dam provides a low hazard potential, making it a safe destination for outdoor activities.

Managed by the Seattle District of the US Army Corps of Engineers, Lower Rimrock Dam boasts a storage capacity of 550 acre-feet and a maximum discharge rate of 22,400 cubic feet per second. The dam's design, with a stone core and rock foundation, reflects a commitment to both structural integrity and environmental sustainability. Despite not having a current condition assessment, the dam's low hazard potential and state-regulated status ensure safe operation for visitors and nearby residents alike.

Congressional District 04's Representative Dan Newhouse (R) oversees the area where Lower Rimrock Dam is located, ensuring that proper inspections, permitting, and enforcement measures are in place to maintain the dam's safety and functionality. With its picturesque surroundings and recreational offerings, Lower Rimrock Dam stands as a testament to the harmonious coexistence of water resources and climate conservation in the state of Washington.