Santa Rosa Reservoir is a man-made lake located on the Pecos River in eastern New Mexico. Built in the 1980s, the reservoir was created for flood control, irrigation, and recreational purposes. It has a capacity of 117,000 acre-feet of water and a surface area of 3,800 acres. The reservoir receives water from the Pecos River, which is fed by several tributaries and snowpack in the Sangre de Cristo Mountains. The reservoir provides water for irrigation to surrounding agricultural land, as well as for recreational activities like fishing and boating. The Pecos River also serves as a source of hydroelectric power. The reservoir is managed by the United States Army Corps of Engineers and is an important part of the water supply infrastructure in the region.