Boss Lake, also known as Donnell #1 & #2, is a captivating water resource nestled in the heart of Chaffee County, Colorado. Managed by the local government, this reservoir serves multiple purposes including irrigation, fish and wildlife pond, and recreation. With a dam height of 21 feet and a hydraulic height of 21 feet, Boss Lake has a structural height of 35 feet and a storage capacity of 566 acre-feet, providing essential water supply for the surrounding area.

Constructed in 1894, Boss Lake covers a surface area of 22 acres and has a normal storage capacity of 190 acre-feet. The reservoir is situated along the Middle Fork of the South Arkansas River and is regulated by the Colorado Division of Water Resources. Despite its high hazard potential, Boss Lake is currently in fair condition, with regular inspections ensuring its safety and functionality. With its scenic location and diverse uses, Boss Lake remains a valuable asset for water resource and climate enthusiasts in the region.