heightdata flipped on import

I'm trying to import a 2d array of floats for a heightmap stored in a binary landscape file. I can parse the file but the heightmaps end up becoming flipped and it looks upside down. Is there a way to flip these before they are assigned?

One more thing. Before I used Unity I used XNA. I would take the array and set a texture2d with the float array. It works but when doing the same way in Unity they are flipped. Can I set the depth and 8/16 bit like you can in the menu version of heightmap import?