Espantosa Lake is a natural lake located 5 miles northeast of Carrizo Springs in north central Dimmit County, Texas. The lake has historical significance as a former campsite along the Old San Antonio Road. In 1917, the lake was modified when water from the Nueces River was diverted into it, and a dam was constructed for irrigation purposes. The dam, operated by the Zavala-Dimmit County Water Control and Improvement District, creates a 364-acre reservoir with a capacity of 1,745 acre-feet.

The lake's name, which means "fearful" or "horrid" in Spanish, comes from the ghostly fog that frequently obscures the water after dark. This atmospheric condition led early travelers to avoid the area, giving rise to various legends - stories of lost gold and silver wagons, murders along its shores, and tales of alligators in the waters.

The lake serves multiple purposes today, including boating and fishing alongside its irrigation function. Paddlers should check with local authorities about access points and facilities before planning their visit, as the lake primarily functions as an irrigation reservoir.

The lake's semi-arid surroundings reflect the typical landscape of north central Dimmit County. Water levels can vary significantly throughout the year, depending on agricultural needs and seasonal conditions.