I was referring to the Great Divide Basin, entirely in Wyoming, which is entirely a different structure and completely separate from the Basin and Range province in which Yucca Mountain is situated. The hydrologic basin within the Great Basin as you know it is a more restricted area than the entire province, which does indeed empty into the ocean as a part f the Columbia River watershed. However, the water sink consists of a lot of smaller basins.

That doesn't alter the main fact that you misstated the risk assessment which led the EPA to nix Yucca as a nuclear waste repository. You blamed that on politics. The decision, which I pointed out to you and linked you to, was based on science, not politics. Our favoring of different names doesn't change that.