Just a little update. As expected, the tractor was under 7ft of water. Afterward, I had mud every where, in the engine, intake and exhaust manifolds, in the hydraulic tank etc. I hosed the tractor down, drained the oil and salt water inside and filled it with the cheapest oil I can find. Then I spray it liberally with WD40. Since I am so busy doing hurricane clean up for 3 houses, the tractor goes to the dealer. I've yet to receive a quote on how much it cost.
BTW, I miss my tractor horribly. Those tree logs are so hard to haul to the curb manually. I've got 4 huge pine trees to cut down and haul to the curb for FEMA to take them away.