Grimes Brooks, located in Routt County, Colorado, is a privately owned irrigation dam on Red Dirt Creek-TR. Built in 1903, this earth dam stands at a height of 31 feet and spans a length of 680 feet, with a storage capacity of 720 acre-feet. The dam serves the primary purpose of irrigation and has a spillway width of 40 feet for uncontrolled discharge.

With a high hazard potential and a satisfactory condition assessment as of June 2020, Grimes Brooks has undergone modifications in 1952 and 1995 to enhance its foundation, hydraulic, mechanical, and structural aspects. The dam is subject to regular inspections, with the last one conducted in June 2020, and has an emergency action plan in place. Managed by the Colorado Department of Water Resources, this dam plays a crucial role in water resource management and agriculture in the region, highlighting the importance of monitoring and maintaining such vital infrastructure for climate resilience and water sustainability.