Here is a water well for the D&D playsets. It goes along with the other pieces I have available for download. You will want to download the file that is labeled "Water Well Pieces". This file should be basically set up to be able to print all the pieces at one time. If there is any trouble, please let me know!
Once printed just use some basic crafting glue and glue all the pieces together.
For reference, use the other file labeled "Water Well". This file contains the well fully built and how it should look when its all glued together.