Constant-Radius Arch Dam

(C) Thomas, Henry H. The Engineering of Large Dams
The simplest form of arch dam with a vertical cylindrical upstream face and a uniformly inclined downstream face. Used in wide valleys with the possibility of slip forming construction methods.

Constant-Angle Arch Dam

(C) Thomas, Henry H. The Engineering of Large Dams
Variable-Radius Arch Dam

(C) Thomas, Henry H. The Engineering of Large Dams
Double curvature - Cupola Dam

(C) Thomas, Henry H. The Engineering of Large Dams
Vertical curvature introduced so that the weight of the dam will offset vertical tensions due to water load. Cupola dams are ideal for narrow valleys and are similar to the thin arch dams in regard to foundation requirements.

(C) Wahlstrom, Ernest Dams, Dam Foundations and Reservoir Sites
Cross Sections of typical arch dams