Tomatoes are a hardy plant. Yesterday morning I watered mine and a few hours later we got 1.5 inches of rain in a torrential downpour. It happens. You just can't worry about them so much. IMO people fiddle with the plants way too much.

I try to pinch off the lower stems to keep them off the ground and tie them to the cage occasionally as they grow, fertilize every 2 weeks and water as necessary, that's about it.

I will say though I plant quite a few more plants than I need so if a few don't make it so be it.

Unless they are in standing water I would leave the mulch alone. They can handle some wet soil for a time just as long as they are not drowning. Spray every week if you can and hopefully they will come through it.

A tip from my own experience when there were 2 weeks of torrential rain last August. If you see whitish spikes or triangles appearing on lower half of the plant, nothing to fear. They are extra roots appearing above-ground 'cos the plant is a bit bamboozled by all the wetness. I was freaked out and ready to attack them hard with the scissors but I held off and things were fine anyway.

p.s. Just checked google for 2 minutes and found the official term...... adventitious roots

Thank you all. Just a little worried as I lost last years plants to blight. I want tomatoes!!

Sorry for your situation. I hope that it is short term.
Flooding happen all the time in the spring time mostly,
That is why having a well drained garden soil is valuable.
That is why some of us spend efforts, time, money to build raised beds.
When I moved to WA, I figured out that in my situation raised beds are MUST.
So I built my beds, filled them with purchased material at a cost per square foot of about 2-3 bucks. So for 150 sq-ft I spent roughly $400. , not counting my time and labor. On top of that I cover my beds with black plastic and just make a cut for each planting hole. I'll remove the plastic some time in July .
I add a lot of pine bark mulch and small nuggets to the soil mix., in addition to compost and manures.
So if you have a low laying land, maybe raised beds can offer some solution.
You can also do few other things:

== slope the beds a little, if possible.
== provide channels for the runoff water to go, if possible.
++ Make barrier so no runoff water can get into your garden.
== make your garden series furrows and hills. So you plant on the hills and they won't get flooded.

I have, personally done all of these things in the past.

Sey