If a giant tarp would work, we probably would have started with the Salton Sea which is a paltry 350 square miles in area. Of course, you could try covering th

If a giant tarp would work, we probably would have started with the Salton Sea which is a paltry 350 square miles in area. Of course, you could try covering the 1700 square mile Great Salt Lake with a tarp and then somehow maintaining it.