
Indeed, roots do stabilize banks, he's absolutely correct!
Levees, river banks, wooded forest slopes, canal embankments even.
But let's not forget, NONE of these situations are impounding millions of gallons of water, and none are subject to seepage and a phreatic line forming in the embankment. Hydrostatic pressure causes dams to leak and collapse, causing massive flooding.
An earthen dam is completely different and can have dire consequences if it is not correctly maintained. No Trees on a Dam. It's simply dangerous.
Yet another STCC member thinking they are Dam Engineers