Mark, According to Tom Jarrett's excellent St. Andrews Golf Links--The First 600 Years:
The Swilcan Burn
THE SWILCAN BURN, WHICH CUTS ACROSS THE FIRST AND THE 18TH fairways of the Old Course, has followed the same channel since 1880. At that time it formed a boundry between the property of Mr. Cheap of Strathtyrum and the town's common. Until then it had meandered across the course in various channels determined by tide and flood, but towards the end of 1879 there were rumblings among local people that the course of the Swilcan had been deliberately altered. Whether deliberately or without forethought, Mr. Cheape had been dumping waste material on his side of the Swilcan, with the result that the course of the burn had been changed, reclaiming ground on Mr. Cheape's side and eroding the town's commonity. It was left to a member of the R&A to fight the local cause, and he was quite forthright in his attack. On the night of 9 September 1879, Mr. J.C. Fernie hired a large gang of labourers who worked non-stop through the night to restore the Swilcan to what he believed was it's original course - the course at the time when Mr. Cheape bought the links from the Dempsters in 1821.
The sight of the restored Swilcan gladdened the local hearts but Mr. Cheape was not amused, consdiering Mr. Fernie's action to be an invasion of his rights, andwithin a few days he had raised an action for damages against Mr. Fernie. Mr. Fernie sought supportof the St. Andrews Town Council in the action, claiming that the burn had been restored to its former course, that a decided improvement had been amde and that not an inch of Mr. Cheape's proeprty had been taken.
The Town Council did not take sides in the matter, and Mr. Cheape's action in the court was successful. The court found that Mr. Cheape was entitled to have the course of burn restored, and Mr. Fernie was ordered to pay the cost of the action and damages. Mr. Fernie apologised, and Mr. Cheape accepted his apology - and the £30 which he offered as expenses. Mr. Cheape, on his part, agreed that the course of the Swilcan should remain.
So Mark like all things natural that mix with Human Nature, yes, altered, but not artificial. Not entirely. I would suspect that the Barry Burn at Carnoustie experienced the same type of history - a natural waterbed that has been over a undetermined period of years has been altered by Nature and Human Nature. But not totally artificial as your co-author elaborates.