The Lighthouse Leisure site holds around 220 caravans and holiday makers and residents have been left without power and water due to the fire.
Many of the residents were asked to leave their caravans during the night, but have since been allowed to return.
Dumfries and Galloway Council say they are working with the site owner and other agencies to secure the site and put temporary power and water supplies in place.
The Council’s DGFirst has also deployed two catering units to provide welfare support.
More top news
Peter Little was a passenger in a Landrover Discovery which collided with a Vauxhall Movano van near Newton Stewart, on 10 November 2017.
A woman has suffered serious head injuries after falling 20 meters down a rocky slope in the Lake District.
Susan Graham, aged 58, was last seen at Sainsbury's in Penrith on 20 November 2017.