The ornamental design for a rainchainwaterfeature, as shown and described.
FIG. 1 is a perspective view of the rain chain water feature attached to a down-spout of a building, shown in phantom, and forming no portion of the claimed design;
FIG. 2 is a perspective view of multiple components of the rain chain water feature, interconnected to one another in a vertical chain, the additional components, shown in phantom, and forming no part of the claimed design.
FIG. 3 is a front elevational view of one of the components of FIG. 2;
FIG. 4 is a rear elevational view of one of the components of FIG. 2;
FIG. 5 is a right side elevational view of one of the components of FIG. 2;
FIG. 6 is a left side elevational view of one of the components of FIG. 2;
FIG. 7 is a top plan view of one of the components of FIG. 2; and,
FIG. 8 is a bottom plan view of one of the components of FIG. 2.