You can draw your own water map. There are some examples provided on this page below, but you can draw your waterworld in any way you like. Take a picture and upload it to our interactive map with this form. Keep in mind that the types of water sources you use are important, but you do not necessarily have to reveal locations of places that you do not feel comfortable sharing either.
Once you have drawn your water map, you might also want to explain it - you can submit this explanation as text as well if you like.