Dead heads piled up against Coon Rapids Dam after completion in 1916. A sluice way through the dam permitted logs to be floated through after 1916 when this photo was taken of the new dam.
The construction of the Lake Zumbro Hydroelectric Power Plant dam began in 1917. The structure was designed by noted hydroelectric engineer, Hugh Lincoln Cooper. The dam, completed in 1919, is owned by Rochester Public Utilities. The railroad tracks were used to help move the large rocks and other materials.
The construction of the Lake Zumbro Hydroelectric Power Plant dam began in 1917. The structure was designed by noted hydroelectric engineer, Hugh Lincoln Cooper. The dam, completed in 1919, is owned by Rochester Public Utilities. Some of the forms for the dam structure are visible in the foreground.
The construction of the Lake Zumbro Hydroelectric Power Plant dam began in 1917. The structure was designed by noted hydroelectric engineer, Hugh Lincoln Cooper. The dam, completed in 1919, is owned by Rochester Public Utilities. The spillway is taking shape in the foreground.
The construction of the Lake Zumbro Hydroelectric Power Plant dam began in 1917. The structure was designed by noted hydroelectric engineer, Hugh Lincoln Cooper. The dam, completed in 1919, is owned by Rochester Public Utilities. Two men can be seen in the center left viewing the construction site.
The construction of the Lake Zumbro Hydroelectric Power Plant dam began in 1917. The structure was designed by noted hydroelectric engineer, Hugh Lincoln Cooper. The dam, completed in 1919, is owned by Rochester Public Utilities. Men are working in the excavation area for the east abutment of the dam.
The construction of the Lake Zumbro Hydroelectric Power Plant dam began in 1917. The structure was designed by noted hydroelectric engineer, Hugh Lincoln Cooper. The dam, completed in 1919, is owned by Rochester Public Utilities. Looking west along the toe of the dam, section ten is in the foreground and the site of the power house is in the background.
The construction of the Lake Zumbro Hydroelectric Power Plant dam began in 1917. The structure was designed by noted hydroelectric engineer, Hugh Lincoln Cooper. The dam, completed in 1919, is owned by Rochester Public Utilities. The rock formation is visible in this view of the excavation for the west abutment.
The construction of the Lake Zumbro Hydroelectric Power Plant dam began in 1917. The structure was designed by noted hydroelectric engineer, Hugh Lincoln Cooper. The dam, completed in 1919, is owned by Rochester Public Utilities. Looking east along the line of the dam from the top of the crusher, the power house is in the foreground.
The construction of the Lake Zumbro Hydroelectric Power Plant dam began in 1917. The structure was designed by noted hydroelectric engineer, Hugh Lincoln Cooper. The dam, completed in 1919, is owned by Rochester Public Utilities. Looking toward the east bank, the north wall of the power house is visible in the center.
The construction of the Lake Zumbro Hydroelectric Power Plant dam began in 1917. The structure was designed by noted hydroelectric engineer, Hugh Lincoln Cooper. The dam, completed in 1919, is owned by Rochester Public Utilities. Looking toward the east bank, the Power house, with almost three walls completed, is visible in the center.
The construction of the Lake Zumbro Hydroelectric Power Plant dam began in 1917. The structure was designed by noted hydroelectric engineer, Hugh Lincoln Cooper. The dam, completed in 1919, is owned by Rochester Public Utilities. Looking from the east bank, the power house is on the right.
The construction of the Lake Zumbro Hydroelectric Power Plant dam began in 1917. The structure was designed by noted hydroelectric engineer, Hugh Lincoln Cooper. The dam, completed in 1919, is owned by Rochester Public Utilities. The power house is visible on the center right.
The construction of the Lake Zumbro Hydroelectric Power Plant dam began in 1917. The structure was designed by noted hydroelectric engineer, Hugh Lincoln Cooper. The dam, completed in 1919, is owned by Rochester Public Utilities. Men are seen working at an excavation area.
The construction of the Lake Zumbro Hydroelectric Power Plant dam began in 1917. The structure was designed by noted hydroelectric engineer, Hugh Lincoln Cooper. The dam, completed in 1919, is owned by Rochester Public Utilities. Looking toward the east bank, a portion of the power house is visible on the far right.
The construction of the Lake Zumbro Hydroelectric Power Plant dam began in 1917. The structure was designed by noted hydroelectric engineer, Hugh Lincoln Cooper. The dam, completed in 1919, is owned by Rochester Public Utilities. Three men are standing on the rim, looking into the excavation area.
The construction of the Lake Zumbro Hydroelectric Power Plant dam began in 1917. The structure was designed by noted hydroelectric engineer, Hugh Lincoln Cooper. The dam, completed in 1919, is owned by Rochester Public Utilities. Looking west, the power house is visible on the right.
The construction of the Lake Zumbro Hydroelectric Power Plant dam began in 1917. The structure was designed by noted hydroelectric engineer, Hugh Lincoln Cooper. The dam, completed in 1919, is owned by Rochester Public Utilities. Looking toward the west bank and the power house, men and horses are visible in the center.
The construction of the Lake Zumbro Hydroelectric Power Plant dam began in 1917. The structure was designed by noted hydroelectric engineer, Hugh Lincoln Cooper. The dam, completed in 1919, is owned by Rochester Public Utilities. Looking toward the west bank and the power house, a small section of railroad track situated on top of one of the walls is visible in the foreground..
The construction of the Lake Zumbro Hydroelectric Power Plant dam began in 1917. The structure was designed by noted hydroelectric engineer Hugh Lincoln Cooper. The dam, completed in 1919, is owned by Rochester Public Utilities. Looking upstream, the power house is visible in the center right.
The construction of the Lake Zumbro Hydroelectric Power Plant dam began in 1917. The structure was designed by noted hydroelectric engineer, Hugh Lincoln Cooper. The dam, completed in 1919, is owned by Rochester Public Utilities. Lake Zumbro, created by the dam, is visible on the right.
Finishing work of putting on the top blank of flashboards at the upper dam. The Mississippi River is full of ice and slush, which hampered the work. The Great Northern Depot is visible in the background.