RedactedNarrative: Driver drove down from county launch to check state park.  He saw what looked like shallow water then he struck ground no quick stop, but scourged the bottom into a trough.  Broke off 1 of keel of three.  Broke 1 blade off drop of the 5 bent the rudder.  There was some fiberglass damage but minimal that I could see.  Boat took on a considerable amount of water but the bilge was able to remove most of it.;  We got it off the rocks and towed it to shore.
NameOfBodyOfWater: Columbia River
NearestCityTown: Vantage                       