In 1867, and in 1873, Louisville was inundated by the floodwaters of the river. In 1873, when the water rose to fifty feet, it is said that C.R. Love paddled a canoe into the Church and took out the archives that were kept in the pulpit.
Fearing another great flood, drastic change was needed for the town of Louisville. In order to set minds at ease and control future rises in the river, the Fort Loudon Dam was built by the Tennessee Valley Authority.
The Louisville Methodist Church moved to Louisville Road. When the congregation decided to move the church, they changed its name to St. Mark's. This change was approved at a called Charge Conference meeting held in May of 1942, and the vote was unanimous.
The bricks on the old Louisville Methodist Church were very carefully taken down, brick by brick. They were then cleaned by the women and the Pastor so they could be used to reconstruct a new sanctuary.
The present sanctuary was constructed and a dedication service was held on November 19, 1944 for St. Mark`s Methodist Church.