Big Pine, also known as Joe Moore Reservoir, is a private water resource located in Dolores, Colorado. Built in 1907 for irrigation purposes, this earth dam stands at 26 feet in height and stretches 1370 feet in length along the Lost Canyon-TR river or stream. With a storage capacity of 608 acre-feet, Big Pine serves multiple functions including fish and wildlife pond, irrigation, and recreation.

Despite being privately owned, Big Pine is regulated by the Colorado Department of Water Resources, with state jurisdiction and enforcement in place. The dam's condition is assessed as fair, with a significant hazard potential and a moderate risk assessment rating. The dam features a spillway width of 100 feet and is equipped with a slide (sluice gate) outlet gate to manage water flow and discharge.

Water enthusiasts and climate advocates interested in Big Pine will find a historic structure that continues to play a crucial role in the region's water management and agricultural activities. With its picturesque location and significant storage capacity, the reservoir offers a glimpse into the intersection of human engineering and natural resources in the scenic Montezuma County landscape.