In reply to Rog Wilko:
Most cars including probably all soft SUVs are not designed for water at a foot depth. I remember one 4x4 model years ago making great claims about it’s wading depth ability and it was only 20cm in the small print. Says it all really.
As it’s a farm track I guess it has potholes, stones, uneven surface, maybe undefined edges? With a flood it could well have debris unseen on the track under the water level.
Not worth the risk generally and far too high a risk if the water is flowing across or any direction really, the edges are undefined and not supported (banked), and you don’t know the surface of the track is solid and level and debris free.
You may well get through, though I have huge doubts as 100 yards is massive in terms of what could go wrong, but as a minimum you will have wet carpets. If your car is older water in places it’s not intended may well cause problems (cv joints, electrical components) if not immediately, some time after.
Don’t do it.