Simon Miller, 45, the driver of the carriage is in a serious but stable condition in the Dumfries and Galloway Royal Infirmary. His daughter Hannah, 18, was also in the vehicle but released from hospital after treatment.
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There are three flood warnings and 16 flood alerts currently in place across the county.
A 41 tonne crane closed the A7 for most of today after leaving the road and becoming trapped in the road barrier.
After a wet and windy day things turn colder from tomorrow.