After touching up the base scenery around the bridge abutments and adding a few rock outcroppings I decided to finish the river with a coat of gloss medium. The blending of different color shades when painting the river bed gives the illusion of depth.
I have been trying out the Silfourettes grass tufts from Scenic Express and really like them. Some of the greener ones were placed along the waters edge.
I took this photo after securing the Gloconda section into it's place in the layout and with the bridges set temporarily in place to see what it would look with the backdrop behind it.