Hyperion, the BNSF yard down by the river isn't the one I'm thinking of, but you're correct on every aspect of modeling that. Great potenial for operation, and scenery, all really in the "midwest".
The one I'm thinking about is farther south, I think, and not on the river. Might be one of the old CNW branches that roamed around. Not a big yard, be if memory serves me, 3-4 fairly long tracks.