La Boquilla Dam (Spanish: Presa de la Boquilla) is a masonry arch-gravity dam on the Rio Conchos in Chihuahua, Mexico.

It was built in 1910 to provide hydroelectricity, irrigation and flood control, and forms Toronto Lake with a capacity of 2.903 cubic kilometres (2,354,000 acre⋅ft).

[1] The dam and the nearby town of Boquilla de Conchos are named for the abrupt narrowing of the Conchos valley where the dam was built: boquilla means "nozzle" or "mouth".

[3] One demonstrator was killed and another injured in September 2020 during a protest by farmers against sending water from La Boquilla Dam to the United States as stipulated in a Treaty relating to the utilization of waters of the Colorado and Tijuana Rivers and of the Rio Grande signed in 1944.

Locals blamed the Mexican National Guard, who responded they did not do it and that the event needed to be investigated.