Approximate location — plotted from published sources, not a site visit, and not a guarantee of access.
Flagship Reclamation-era dam (dedicated 1911) on the Salt River that created Roosevelt Lake and underwrote the Salt River Project’s Phoenix valley agriculture. Visitor overlooks on the Apache Trail / AZ-88 corridor show the masonry-and-concrete arch structure, spillways, and reservoir against Superstition–Sierra Ancha desert ranges.