The Rio Grande dam, also known as Farmers Union, is a vital structure located in Hinsdale, Colorado, serving the primary purpose of irrigation. Completed in 1914, this earth dam stands at a height of 111 feet and has a length of 980 feet, with a maximum storage capacity of 73,800 acre-feet. The reservoir's normal storage capacity is 54,082 acre-feet, providing water for fish and wildlife ponds, irrigation, and recreational activities in the region.

Managed by the local government and regulated by the Colorado Division of Water Resources, the Rio Grande dam has a high hazard potential and has been assessed to be in fair condition as of July 2020. With a maximum discharge capacity of 15,140 cubic feet per second, the dam's uncontrolled spillway with a width of 32 feet helps manage floodwaters effectively. Despite its moderate risk rating, the dam continues to play a crucial role in water resource management and conservation efforts along the Rio Grande River.

Enthusiasts interested in water resources and climate in the area should take note of the Rio Grande dam's significance in providing water for irrigation, wildlife, and recreation in the region. Its history, structural details, and regulatory oversight offer valuable insights into the challenges and opportunities facing water infrastructure management in Colorado. With a focus on sustainability and risk mitigation, the Rio Grande dam exemplifies the careful balance between harnessing water resources for human use while protecting the environment and local communities from potential hazards.