Baseline - Northwest is a privately owned dam located in Boulder, Colorado, along the South Boulder Creek-OS. Built in 1905, this earth-type dam stands at 20 feet tall and stretches 2650 feet in length, providing irrigation and water supply purposes to the area. With a storage capacity of 6592 acre-feet, the dam has a spillway width of 25 feet and a maximum discharge rate of 822 cubic feet per second.

Despite its age, Baseline - Northwest is in satisfactory condition as of its last inspection in March 2020, with a high hazard potential due to its location and purpose. The dam is regulated and inspected by the Colorado Department of Water Resources, ensuring its safety and compliance with state regulations. With a moderate risk assessment rating, measures are in place to manage any potential risks associated with the dam.

Water resource and climate enthusiasts will appreciate the historical significance and engineering feat of Baseline - Northwest, as well as the pivotal role it plays in providing irrigation and water supply to the surrounding area. Its location along South Boulder Creek-OS adds to its environmental importance, making it a key structure in the region's water management system. With proper regulation and maintenance, Baseline - Northwest continues to serve its purpose while being mindful of potential risks and safety measures.