Timberline, also known as Hilldale Pines, is a private recreational dam located in Jefferson County, Colorado. The dam is regulated by the state and undergoes regular inspections, with a low hazard potential and a high risk assessment rating of 2. The dam's primary purpose is recreation, and it stands at a height of 55 feet with a hydraulic height of 33 feet.

Sitting on the South Turkey Creek-TR river, Timberline has a storage capacity of 31 acre-feet and a normal storage of 2 acre-feet. The dam is constructed of earth materials and spans 405 feet in length. Despite being not rated in terms of condition assessment, the dam is maintained under state jurisdiction with permitting, inspection, and enforcement procedures in place. The spillway type is listed as "None", with a spillway width of 2 feet and a maximum discharge capacity of 600 cubic feet per second.

With its picturesque location in Fenders, Colorado, Timberline offers not only recreational opportunities for visitors but also serves as a vital piece of infrastructure for water resource management in the area. Its historical significance and ongoing state oversight provide a glimpse into the importance of sustainable dam operations amidst changing climate patterns. Water resource and climate enthusiasts will find Timberline to be a compelling case study in the intersection of human activity and environmental stewardship.