The first one, called just Saint Charles Reservoir, is located in the mountains of southwestern Pueblo County, southwest of Beulah, at an elevation of 8,894 feet (2,711 meters).

[1] Saint Charles Reservoir Number 2 and Saint Charles Reservoir Number 3 are located next to each other in Stem Beach, just south of Pueblo.

[2][3] Reservoirs number 2 and 3 were built by Colorado Fuel and Iron in the early 1900s.

[4][5] All three reservoirs are privately held and not open to the public.

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