Oopsy, sorry! I was linking from my gallery and I deleted the second one. The more I looked at it the more I thought it didn't work.
The closest bit of the foreground is actually mud/sediment/whatever-it-is lol. The river is tidal there and the tide was right out when I took this. I walked past the scene this morning on my way into work and the tide was in, the water level was almost up to the walkway (just below the big doors) and it looked different again. I might pop back and take a couple more with the water at different levels.