The ornamental design for a curvedwater shower wand, as shown and described.
FIG. 1 is a perspective view of a curved water shower wand embodying the new design;
FIG. 2 is a front view thereof;
FIG. 3 is a back view thereof;
FIG. 4 is a side view thereof;
FIG. 5 is another side view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
In the drawings, the broken line showing of the curved water shower wand is included for the purpose of illustrating portions of the article and and forms no part of the claimed design.