Parker Basin #1, also known as Neversweat, is a privately owned irrigation dam located in Mesa County, Colorado. Constructed in 1899, this earth dam stands at a height of 18 feet and has a length of 160 feet, with a storage capacity of 411 acre-feet. The primary purpose of Parker Basin #1 is irrigation, serving the agricultural needs of the surrounding area through the storage and controlled release of water from Cottonwood Creek.

Despite its age, Parker Basin #1 has undergone modifications in 1970 to enhance its hydraulic, mechanical, and structural capabilities. The dam features an uncontrolled spillway and a slide (sluice gate) outlet gate. With a hazard potential rated as low and a fair condition assessment as of August 2018, this dam is considered to have a moderate risk level. The regulatory oversight of the Colorado Department of Water Resources ensures that the dam is regularly inspected, permitted, and enforced for public safety and water resource management in the region.

Water resource and climate enthusiasts interested in the historical significance and engineering aspects of dams will find Parker Basin #1 a fascinating example of early 20th-century irrigation infrastructure in Colorado. Its location in Molina, alongside its modest size and storage capacity, offers insights into the challenges and solutions involved in providing water for agricultural purposes in the region. This dam's presence on Cottonwood Creek highlights the interconnectedness of water resources, ecosystem management, and human development in the arid landscapes of the American West.