Blue Bank Reservoir, located in Washakie, Wyoming, is a Federal-owned water supply reservoir managed by the Bureau of Land Management. The reservoir, completed in 2003, has a storage capacity of 33.6 acre-feet and serves the primary purpose of water supply. It is situated along the Blue Bank Draw Nowood River and covers a surface area of 3.48 acres with a drainage area of 80 square miles.

The dam at Blue Bank Reservoir is a gravity type structure with a hydraulic height of 20 feet and a structural height of 28 feet. The reservoir has a low hazard potential and a poor condition assessment, with the last inspection conducted in August 2016. Despite its poor condition, the reservoir poses a moderate risk and is regulated by the State of Wyoming, with permitting, inspection, and enforcement processes in place to ensure its safety and functionality. Blue Bank Reservoir is a vital water resource in the region, contributing to water supply and management efforts in the area.