Eagle Nest Lake State Park, State park in Colfax County, New Mexico

Eagle Nest Lake State Park is a New Mexico state park in the Moreno Valley, surrounding a large reservoir at an elevation of about 8,200 feet (2,500 m). The park has developed campgrounds, picnic areas, and boat ramps along the water.

The dam that created the lake was finished in 1918, built largely by Taos Pueblo workers, and ranks among the largest privately constructed dams in the country. After the valley flooded, the area gradually became a destination for fishing and outdoor recreation.

The lake is a reservoir created in 1918 when the Cimarron River was dammed, and fishing has shaped its culture ever since. Anglers must keep any northern pike they catch, a rule meant to protect the trout and kokanee salmon. The park was established on July 3, 2004, and the wooden entrance sign carries a red Zia sun symbol.

The park sits at high elevation, so visitors should allow time to adjust before doing anything physically demanding. Anyone bringing a boat should check the local rules on distance from anglers and general water safety before heading out.

In winter, when the surface freezes over, anglers drill holes through the ice to fish for rainbow trout, brown trout, and kokanee salmon. The lake is also one of the few places in New Mexico where kokanee salmon, a landlocked species, can be caught at all.