10 - Make slow, steady progress through deep water to create a "bow wave" and an air pocket in and around the engine compartment and front wheels. This minimizes risk of water drowning the engine. Water does not compress as well as air. Don't let hydrostatic lock ruin your day. Check the brakes after coming out.
Having a plastic sheet or poncho to cover the front of the vehicle, especially around the radiator grill, will help keep most of the water out of the engine bay. Ensure that the distributor and ignition system are tightly sealed and water proofed to some extent. Smooth progress through deep water or mud will keep the air pocket stable. A big rock or drop-off will affect the steady progress and "burst your bubble," so be careful! Generally speaking, a deep crossing should be no more than just over the tires. Mud that deep will stick you before the front axle gets half-way. Carry an extra air filter element in case you do drown the engine. Get the vehicle out of the creek, then work on it.
If the engine does swallow some water pull the spark plugs, air filter, coil wire, and dry the distributor cap out using a clean cloth and WD-40.. Crank the engine over and blow the water out of the cylinders. Check the engine oil before cranking! I have seen the engine completely fill with water. You might have to drain the engine, so do it for the environment and use water jugs or coolers to collect the watered oil.