front of the backboard 20 the elongated ledge 30 can have the polymer film 23 attached to the back thereof with fasteners 32 as seen in fig2 and 3 turning to fig4 an exploded view of the backboard having a decorative design 34 thereon is shown removed from the waterfall housing by the lifting of the backboard 20 to raise the pegs 26 from the slot 27 in the sidewalls 13 and 14 after loosening the pegs 28 from the openings 35 in the bottom of the sidewalls 13 and 14 once the backboard is removed a polymer cover 23 having a decorative design 25 is placed over the face of the backboard 20 and the snap portions 35 snapped over the opening 37 and onto the snapped portions 36 to form a waterproof film over the backboard 20 the top of the waterproof film 23 extends over the elongated ledge 30 to form a water path for the water flowing over the backboard 20 with the film cover 23 attached thereto the backboard can then be rapidly reattached to the waterfall 10 housing allowing a user to change the image for a special event the image on the polymer film 23 can be of a halloween scene as shown in fig4 or it can be a christmas scene or any other decorative image desired the image is then seen behind the falling water in the waterfall which is lighted by the lamp 21 lighting the falling water and.