Mesa, also known as Hank Roberts Lake, is a local government-owned recreational dam located in Boulder, Colorado. Built in 1907, this Earth dam stands at 16 feet high and has a hydraulic height of 22 feet, with a maximum storage capacity of 160 acre-feet. The dam serves primarily for recreational purposes and is situated along the Little Dry Creek-TR river or stream, offering a serene and picturesque setting for water resource and climate enthusiasts to explore.

Despite its age, Mesa has been regularly inspected and deemed to be in satisfactory condition, with a low hazard potential. The dam features an uncontrolled spillway with a width of 9 feet, and has a moderate risk level according to a risk assessment rating of 3. With a surface area of 18 acres and a normal storage capacity of 53 acre-feet, Mesa provides a safe and enjoyable environment for outdoor activities such as fishing, boating, and hiking.

In the event of an emergency, the dam has protocols in place for risk management measures, although specific details on emergency action plans and inundation maps are not readily available. Overall, Mesa presents a unique opportunity for water resource and climate enthusiasts to appreciate the beauty of nature while also understanding the importance of maintaining and managing water infrastructure for future generations.