Colombia Rivers and Lakes

We need to create a map for a Lowrance HDS-7 Fishfinder with GPS ([login to view URL]) Because there is not a map that I can buy to install on my GPS that I can use to navigate some rivers and lakes in Colombia I need to create it. It's necessary to create the map in vectors and it should work in my GPS. I did a map with the program Global Mapper and it works in my GPS, but you can use the program you want, I will need the sources to modify it and put it back to my GPS. My GPS should know that it's a river or lake, in case I want to go to point to a site A to B, it should look for a trace inside the river or lake and not in the land. For now I need those Colombian rivers: 1. Río Meta 2. Río Malacacias 3. Río Yucao 4. Río Orinoco 5. Río Bita And those Colombian lakes: 1. Lago de Tota 2. Embalse de Tomine 3. Embalse Neusa 4. Embalse del Sisga