Martins said she had been alerted to the problem by workers at the nearby mills.
She added: “I was distraught. The pond was literally bare – there was no water in it at all, it was just mud.
“The swans were trying to slide across the mud to get to what little water there was from a small stream.
“The island in the middle had been totally chopped down, there are like three trees left, all the other vegetation has gone.
“That is the nesting area for the swans and it is just empty.”
The impact would be felt across the local ecosystem, including toads, kingfishers and other waterfowl, Martins warned.
“The wildlife that was there has been disrupted. We probably won’t have a breeding season now and we may have lost them,” she said.
“It is going to have a massive impact. It is going to take years for the pond and its wildlife to recover”.