A single piece of 3-inch by 24-inch bass wood was enough to make five feet of rivers. Using the RAW, you'll never need more than 36-inches of river, but with three lengths of unbroken river, on bridge, and two fords, you've got enough pieces to make any of the setups listed in the rulebook. There was even enough wood left over to add a curve and short make-up length.
|May need to rethink that road piece left of the bridge. That|
bridge is a metal cast bought from Heroics and Ros.
|Knights defending a ford. Because using heavy mounted troops|
to defend a static defense line is the mark of a good leader.
This is the classic war-game color for streams. In nature they only look this blue when they reflect a clear blue sky. On the wargaming table that color makes it clear what the feature represents, and provides a nice stark contrast against the ground surface. It's only a cliche because it works. For more in-depth reading, there's a great comparative analysis over on Wargaming With Barks. Check it out.