Brown No 1 is a privately owned dam located in Las Animas, Colorado, with a primary purpose of providing fire protection, stock watering, and serving as a small fish pond. Built in 1913, this earth dam stands at a height of 17 feet and has a maximum storage capacity of 720 acre-feet, with a normal storage of 180 acre-feet. The dam spans 1400 feet in length and covers a surface area of 120 acres, serving a drainage area of 15 square miles.

Despite its age, Brown No 1 is considered to have a low hazard potential, with a high risk assessment rating of 2. It is regulated by the Colorado Division of Water Resources and undergoes regular inspections, with the last one conducted in December 1992. The dam does not have a spillway, but it boasts a spillway width of 425 feet for efficient water discharge. With its strategic location on the Van Bremer Arroyo-OS, Brown No 1 plays a crucial role in water resource management and climate resilience efforts in the region, showcasing the importance of private ownership in maintaining critical infrastructure for community safety and environmental sustainability.