I am by no means a Mopar mini-van expert but its been my experience that the water floods the ignition system and shuts the engine down then the water enters the engine thru dip stick and crank case ventalation (low points). I would have pulled the plugs before trying the engine tho. But a starter should not have enought torgue to damage the engine so that should be OK.

So back to the main question is Does it crank? How high did the water go? If it made it to dash level your going to have tons of problems in the future. Most insurance companys total cars that have been in floods to the dash level cause they know the car will be returning over and over again.