We all understand intellectually that vegetation helps reduce runoff. But I never fully appreciated how MUCH runoff it could prevent until I saw this video. Michael Jrab sent the link to me this morning. It shows a brilliantly simple, table-top experiment in a science class. The experiment dramatizes the value of vegetation and how clearcutting can contribute to flooding by accelerating the rate of runoff.
It takes only a minute or so to watch. Notice both the volume AND THE CLARITY of the water coming out.
Now contrast that with this shot of erosion in the clearcut area just north of Elm Grove. One can only wonder how fast the water moved through here.
Posted by Bob Rehak on 5/13/2019
622 Days since Hurricane Harvey