Well.......It's survived several major thunderstorms. Only washout I've had, is where downspout hit directly ON my track! Washed out a small section, maybe 1/2" deep and maybe 2" - 2 1/2" wide. Water that drops down under the long wooden bridge, seems to dissipate right there. But then, that area has been dug up quite a bit, so water drains much faster there. Betting it could handle a 1/2" storm surge!! Betting it wasn't weed! Something stronger perhaps? Hope any/everyone hit by, or in the path of these storms are safe!