Andrew here from Garagefarm.NET Academy.
I have a videotutorial to share with you.
Making landscape in Blender with GIS addon
In this video, DJ shows how to download, install and use the free Blender GIS addon. This useful tool allows for importing Google Maps (or other GIS provider’s data) straight into Blender. Easy search functions enable you to navigate wherever you want in the world and get a detailed textured map in Blender. What’s even more impressive is that you can turn it into a 3d map with just a single click!
In the second half of the video, DJ shows a simple rippled water shader in Blender to make the lake surface more realistic.
I hope you will find it useful.