The heated pool located on the water in Lincoln Park wasn’t always the Olympic-sized pool it is today.
Before it was named Colman Pool, it was called the Lincoln Park Swimming Pool, which opened on July 27, 1925. The hole featured a diving board.
The swimming hole was fed by the tide, surrounded by dirt mounds. To clean it the fire department would hose out mud and debris.
To see other photos of the swimming pool visit the Seattle Municipal Archives.