Located in Archuleta County, Colorado, Lake Forest is a privately owned Earth dam that was completed in 1974. With a primary purpose of serving as a Fish and Wildlife Pond, this reservoir has a storage capacity of 490 acre-feet and a surface area of 42 acres. Situated along Martinez Creek, this low hazard dam has a satisfactory condition assessment and a risk assessment rating of High (2).

Managed by the Colorado Division of Water Resources, Lake Forest is regulated by the state and subject to regular inspections, permitting, and enforcement actions. Despite its low hazard potential, the dam has a maximum discharge capacity of 525 cubic feet per second and a hydraulic height of 19 feet. While the dam does not have a spillway, it has a structural height of 21 feet and a length of 1400 feet.

With its tranquil setting and recreational opportunities, Lake Forest not only serves as a vital habitat for fish and wildlife but also provides a scenic escape for outdoor enthusiasts. The dam's location in the picturesque city of Blanco, NM, just 55 miles from the nearest town, offers a unique blend of natural beauty and conservation efforts, making it an ideal destination for water resource and climate enthusiasts to explore and appreciate.