I dare say that this lovely piece of work here is the Colorado river delta! 'Tis an Estuarine Delta. How do I know, you ask? Well Blimey! It's because of the shape of the delta; look, there's only two branches, and in between them there appears to be a loverly sandbar! I do believe that that was the mark of an esuarine delta, what say you? You agree, aye?