Of the breaking of the artificial lake, which was the largest human factor in this awful calamity, the Rev. G. W. Brown, pastor of the South Fork United Brethren Church, writes me,

“The lake was a little over two miles south of our village, and, by the water course, fifteen miles from Johnstown. It covered 750 acres of ground, and had an average depth of over 30 feet. Having heard the rumor that the reservoir was leaking, I went up to see for myself. It then wanted ten minutes of 3 o’clock in the afternoon of Friday, May 31st. When I approached, the water was running over the breast of the dam to the depth of about a foot. The first break in the earthen surface made a few minutes later was large enough to admit the passage train of cars. When I witnessed that, I exclaimed, ‘God have mercy on the people below,’ but I did not then suppose that the destruction of the lake would be attended by so great a loss of human life.

The dam melted away, oh, how quickly! Only a few moments were required to make an opening more than 300 feet wide and down to the bottom. I watched it until the wall that held back the waters was torn away, and the entire lake began to move, and until, finally, with a tremendous rush that made the hills quake, the vast body of water was poured out into the valley below. Only about 45 minutes were required to precipitate those millions of tons of water upon the unsuspecting inhabitants of the Conemaugh Valley; and right here it began its work of destruction. A mill, house and stable, owned by George Fisher, were demolished in an instant. Fortunate it was for him that, a few minutes before, he and his family had moved to higher ground. He had conveyed a milk wagon, a plow and other implements to a more elevated spot, supposing they would be safe there; but the mighty rush of water leaped over the hills and carried off his and other people’s property, to be seen no more.

It was but an instant apparently before the mighty torrent tossed into the air the iron bridge that spanned the South Fork, and crushed, beyond recognition, the house and two barns belonging to George Lamb. Onward dashed the destructive flood, roaring like a mighty battle, tree-top high, toward South Fork village, rolling over and over again rocks that weighed tons and tons, carrying them a mile or more from the spot where they had lain for ages.”