Rainbows in the Lehigh Valley Gorge

[TMo]

Work is slowly progressing on Mud Run.  I joined up some pieces of 1/4" ply and established the river profile and cut the edge of the presentation with my sabre saw, knowing that it's going to be (roughly) halfway across the river in most cases.  In order to pour the realistic water, I'll need some way to dam up that edge.  
   

I cut out some 1-by pieces and glued them under the plywood at the edges.  I'll then wrap the edge with several strips of 1/4" plywood that will be air-nailed into the 1-by pieces and will project just above the surface of the plywood.  That banding will serve two purposes - the dam for the Realistic Water and a finished fascia for the layout there.  Once I have the surface prepped it'll be time to install cardboard strips for the embankments up from the river to the track level.