Waterfall wallpapers for computers are available on Alphacoders.com and WallpaperCraft.com. To download waterfall wallpapers from Alphacoders.com, go to the website, click Alpha Coders at the top left corner of the page, and click Wallpapers and Backgrounds. Once there, enter "waterfall" in the search text box and press Enter.
On the search result page, click a wallpaper to go to the detailed page of that wallpaper. Click a size option below the wallpaper to download it. To download waterfall wallpapers from WallpaperCraft.com, go to the website and enter "waterfall" in the search text box at the top of the page. Click on a wallpaper to see all the available sizes and resolutions and click on a size. When a pop-up window with the wallpaper appears, right-click on the wallpaper, and select Save Image to download the wallpaper.