Bottomless Lakes State Park

Bottomless Lakes State Park, located in New Mexico, is distinguished as the state's first state park, established in 1933. Its name derives from a series of nine small, deep lakes that punctuate the eastern escarpment of the Pecos River valley. These distinctive bodies of water are not fed by surface streams; instead, they are replenished by underground water that percolates through the surrounding rock formations. The park's arid desert climate leads to high evaporation rates, which contribute to the brackish nature of the lake waters.

Geological Formation

The geological origins of the Bottomless Lakes are rooted in the dissolution of gypsum-rich rock. The lakes occur at the base of an escarpment formed by the Seven Rivers Formation, which is abundant in gypsum. Groundwater from the underlying San Andres artesian aquifer rises along faults in this escarpment. As this groundwater interacts with the gypsum, it dissolves the rock, creating sinkholes, also referred to as cenotes. This process is the primary mechanism responsible for the formation and unique characteristics of the lakes.

Notable Lakes and Features

Among the nine lakes, Lazy Lagoon stands out as the largest, with a surface area of approximately 26.1 acres. This seemingly single lake is, in fact, composed of three distinct sinkholes, the deepest of which plunges to 90 feet. Devil's Inkwell, the smallest lake at 0.36 acres, earns its name from the dark hue of its water, a result of the cenote's steep sides and the presence of algae. Figure Eight Lake presents a unique feature where two nearly circular lakes are separated by a narrow strip of land that can be submerged during periods of high water, causing the two lakes to merge and form a figure-eight shape. However, reduced water tables due to irrigation in the Pecos valley mean these lakes rarely merge anymore.

Lea Lake is notable as the only lake within the park where swimming is permitted. It features a sandy shoreline on its western side and cliffs to the east, along with a concession area that draws visitors in the summer. While seven of the nine lakes are protected within the state park, the southernmost lake, Dimmitt Lake, is privately owned by the Fin and Feather Club.

Wildlife and Conservation

Bottomless Lakes State Park is a vital habitat for several endangered species. These include the Pecos pupfish and the Rainwater killifish, which are uniquely adapted to the park's aquatic environments. Other protected species found here are the cricket frog and the Eastern Barking Frog. The park also supports a diverse array of other wildlife, including various mammals, reptiles, and numerous bird species, making it an important area for biodiversity and conservation efforts in New Mexico.