car cranks slow and wont turnover

If you did not get water over the hood, you probably only got the high voltage ignition wet. A thorough drying should do it. However, if the water level got high enough to get to the engine air intake, water might have gotten inside the engine and hydrolocked a piston or two. Think the cylinder filled with water and the piston coming up to hit the water – instant stopage. This can spell expensive damage like broken piston(s), bent connecting rods, cracked rings, bent crankshaft, etc. The mechanic will be able to tell if water got into the engine so wait for his diagnosis. Hopefully, he can remove the spark plugs; crank the water out of the cylinders; and no damage has been done.

Not familiar with your vehicle, but ck to see where the air intake is. You might have gotten water in the intake which would have gotten in the cylinders. If it wouldn't turn over at all I'd say you hydro locked it