Located in Las Animas, Colorado, the Furness Arroyo dam serves multiple purposes, including irrigation, fire protection, stock, and small fish pond maintenance. Built in 1909, this earth dam stands at a height of 35 feet and stretches out over 1000 feet, with a storage capacity of 600 acre-feet and a normal storage level of 485 acre-feet. The dam regulates the flow of the Furness Arroyo stream, covering a drainage area of 2 square miles and boasting a maximum discharge capability of 2340 cubic feet per second.

Managed by a private owner, the Furness Arroyo dam is regulated by the Colorado Department of Water Resources, ensuring compliance with state permitting, inspection, and enforcement standards. Despite being last inspected in 1991, the dam has a low hazard potential and a high risk assessment rating, indicating a need for ongoing monitoring and risk management measures. With its historical significance and vital role in local water resource management, the Furness Arroyo dam stands as a testament to early 20th-century engineering and continues to play a crucial role in the community's irrigation and water supply needs.