[Tagging] trees and waterways

[Nathan Edgars II]

On Sun, Sep 12, 2010 at 4:46 PM, John F. Eldredge <john at jfeldredge.com> wrote:
> One type of map that would benefit from showing the direction of waterway flow would be one intended for use with canoes, rowboats, or other muscle-powered small boats.  Paddling in the same direction as a river's current is much less effort than paddling against the current.

It's also useful from an environmental standpoint: where does
pollution from this factory end up?