Failure at the lower dam shortly after its completion, shows a section that was washed out. A train is running along the bank of the Mississippi River.
Failure at the lower dam shortly after its completion, shows a section that was washed out; also shows the Minneapolis Western Railroad Bridge and the west bank of the Mississippi River.
Failure at the lower dam shortly after its completion, shows a section that was washed out; also shows the Tenth Avenue Bridge and the east bank of the Mississippi River.
Looking across the washout at the waste way area toward the east bank; shows the Pillsbury A Mill, Phoenix Mill and other buildings on the east bank of the Mississippi River.
The complete upstream apron, part of the construction of the Onalaska dam. The Onalaska dam project was undertaken as part of improvements to the Upper Mississippi River.
Fill in the east channel of the Mississippi River just below the Central Avenue Bridge; the dotted line shows the face of a stone wall built on the bank years before.
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.
The tailwater area at the completion of the Onalaska dam. The Onalaska dam project was undertaken as a part of improvements to the Upper Mississippi River.
The tailwater area at the completion of the Onalaska dam. The Onalaska dam project was undertaken as a part of improvements to the Upper Mississippi River.
Stones added by the corps are visible along the tailwater area of the Onalaska dam project at completion. The Onalaska dam project was undertaken as a part of improvements to the Upper Mississippi River.
The tailwater area of the Onalaska dam project is visible beyond the railroad spur run to supply the construction. The Onalaska dam project was undertaken as a part of improvements to the Upper Mississippi River.
The tailwater area pool associated with the Onalaska dam project at normal elevation. This photograph was taken from a point on line with the north side of the Burlington Railroad depot and at a point located on the embankment shoulder about 13 feet from the westerly rail, with a headwater elevation of 638.90 and a tailwater elevation of 631.35. The Onalaska dam project was undertaken as a part of improvements to the Upper Mississippi River.
The tailwater area pool associated with the Onalaska dam project at normal elevation. This photograph was taken from a point on line with the north side of the Burlington railroad depot and at a point located on the embankment shoulder about 13 feet from the westerly rail, with a headwater elevation of 638.90 and a tailwater elevation of 631.55. The Onalaska dam project was undertaken as a part of improvements to the Upper Mississippi River.
The tailwater area pool associated with the Onalaska dam project at normal elevation. The Onalaska dam project was undertaken as a part of improvements to the Upper Mississippi River.
The tailwater area pool at normal elevation, part of the Onalaska dam project. The Onalaska dam project was undertaken as a part of improvements to the Upper Mississippi River.
The tailwater area pool at normal elevation, part of the Onalaska dam project. The Onalaska dam project was undertaken as a part of improvements to the Upper Mississippi River.
The tailwater area pool at normal elevation, part of the Onalaska dam project. The Onalaska dam project was undertaken as a part of improvements to the Upper Mississippi River.
The tailwater area at the completion of the Onalaska dam. The Onalaska dam project was undertaken as a part of improvements to the Upper Mississippi River.
Piles are visible at the tailwater area at the completion of the Onalaska dam. The Onalaska dam project was undertaken as a part of improvements to the Upper Mississippi River.
Trees and buildings at the tailwater area following the completion of the Onalaska dam contract. The Onalaska dam project was undertaken as a part of improvements to the Upper Mississippi River.
Buildings are hidden behind the trees overlooking the tailwater area following the completion of the Onalaska dam contract. The Onalaska dam project was undertaken as a part of improvements to the Upper Mississippi River.
A small amount of snow covers the stones at the tailwater area following the completion of the Onalaska dam contract. The Onalaska dam project was undertaken as a part of improvements to the Upper Mississippi River.
A chain link fence runs in front of the tailwater area at normal elevation, part of the Onalaska dam project. The Onalaska dam project was undertaken as a part of improvements to the Upper Mississippi River.
A chain link fence runs along the dike at the tailwater pool at normal elevation, part of the Onalaska dam project. The Onalaska dam project was undertaken as a part of improvements to the Upper Mississippi River.
Permanent piling for submergible dike to be used for cofferdam construction at the Onalaska dam, under construction on the Upper Mississippi as part of Upper Mississippi River improvements. To drive piling for this cofferdam it was necessary that a crane be moved over the ice, or that the ice be cut and moved through the water on a barge. An unusual procedure was adopted. The snow was cleared back from the surface of the ice and piled up to form a cofferdam. This cofferdam was flooded artificially and the water permitted to freeze. By successively flooding and permitting the water to freeze, the ice was built up to a thickness sufficient to permit running the crane across the ice.
Permanent piling and preparations for construction at the Onalaska dam, under construction on the Upper Mississippi as part of Upper Mississippi River improvements. To drive piling for this cofferdam it was necessary that a crane be moved over the ice, or that the ice be cut and moved through the water on a barge. An unusual procedure was adopted. The snow was cleared back from the surface of the ice and piled up to form a cofferdam. This cofferdam was flooded artificially and the water permitted to freeze. By successively flooding and permitting the water to freeze, the ice was built up to a thickness sufficient to permit running the crane across the ice.
Driving steel sheet piles for the cofferdam at the Onalaska dam, under construction on the Upper Mississippi as part of Upper Mississippi River improvements. In order to move the crane across the ice, a cofferdam was built by piling snow and artificially flooding the cofferdam, then freezing the flood until the ice was thick enough for the crane to move across it.
A C.B. & Q. spur track for delivery of materials to the Onalaska dam, under construction on the Upper Mississippi as part of Upper Mississippi River improvements.
View of the Sauk River dam site after the final blasting in 1921. The Sauk River dam dated back to 1896. This photograph shows the east side of the Rockville Granite Company main plant looking west from across the river.