In Blender I have created a landscape plane and a flat water-level plane, and intersected them so water shows in the low areas. I have then exported as OBJ format, then serialized them for use in my Android app, but when the app loads, the water plane is too low and has to be translated about 35 units in the z direction to get the same look as my Blender scene.
Do you perhaps know why this is happening?