Salazar #1, also known as Upper Salazar, is a privately owned irrigation dam located in Costilla, Colorado. Built in 1904, this earth dam stands at a height of 26 feet and has a length of 2100 feet, with a storage capacity of 58 acre-feet. The primary purpose of Salazar #1 is irrigation, with additional uses including fire protection, stock, and small fish ponds.

Managed by the Colorado Department of Water Resources, Salazar #1 is regulated and inspected regularly to ensure its structural integrity and safety. The dam has a low hazard potential and is currently assessed to be in fair condition. In the event of an emergency, the dam has a valve outlet gate and is equipped with safety measures to mitigate risks. Overall, Salazar #1 plays a vital role in water resource management in the region, serving as a key infrastructure for agricultural irrigation and water storage in the area.