Photograph of a construction at the Cazadero Dam during construction. Wooden structure is visible with water from the Clackamas River flowing through the bottom, towards the camera.

Photograph showing construction of Cazadero Dam. Several workers can be seen in the distance at the top of a stacked wooden dam structure, with a dirt hillside above. The Clackamas River is visible at the bottom of the dam, and trees (possibly burnt) can be seen at the top of the hill.

Photograph showing construction at Cazadero Dam. The Clackamas River can be seen flowing through the bottom of the dam, and trees are visible on the hillside in the distance. (Image note: similar to PGE7-6, but appears to show further stage of completion).

Photograph showing the Cazadero Dam during a flood, before the placement of a new apron. Fast flowing water spills over the dam.

Photograph showing construction at Cazadero Dam. The Clackamas River can be seen flowing through the bottom of the dam, and trees are visible on the hillside in the distance.

Photograph showing construction at Cazadero Dam. The Clackamas River can be seen flowing on the right side. Ice formations are on the hillside to the left, and snow and frost can be seen on the wooden dam structure.

Photograph showing in-progress re-decking of the spillway at the Cazadero Dam/Station G. Men are visible at the top and bottom of the structure, and water and wood debris can be seen below the spillway.

Photograph showing completed re-decking on the spillway at Cazadero Dam/Station G. Wood debris can be seen in the water below the spillway, and leftover ropes, ladders and tools are visible on the lower walkway.

Photograph showing the Cazadero Dam flume running into the distance. Trees (possible burned) can be seen on both sides of the (excavated?) canal.

Photograph taken from a high angle of penstock units at Cazadero Dam/Station G. The pipes can be seen running downhill towards the in-progress powerhouse, with numerous workers.

Photograph showing construction progress of the powerhouse at Cazadero Dam/Station G, taken from a high angle looking downhill. The foundation can be seen on the near side of the river, with multiple men working. Across the river, a dirt hillside with fallen trees and stumps can be seen.

Photograph, taken from across the river, of the Cazadero powerhouse/Station G. Part of the roof is incomplete, and three pipes run from the building up the hill. A stairway next to the pipes goes from the building to the top of the hill.

Photograph showing in-progress re-decking of the spillway at the Cazadero Dam/Station G. Men are visible at the top and bottom of the structure, and water and wood debris can be seen below the spillway.

Photograph showing construction progress on the intake penstocks at the Cazadero Dam/Station G. Workers are visible in the center of the frame, and five large pipes are seen on the right. Construction debris can be seen throughout the image.

Photograph of a man standing in the Cazadero Dam/Station G transformer house. The man wears a hat and a work apron. The inside of the walls are wooden, with a brick wall visible in the background.

Photograph showing workers during re-decking of the Cazadero Dam. Four men stand at the top of the structure, while one sits on a ladder looking upward. Another part of the wooden dam is visible in the background.

Photograph taken from above Cazadero Dam/Station G, looking downriver towards the spillway and wooden dam structure. Behind, a dirt hillside and trees can be seen.

Photograph taken from a side angle, showing the flume at the Cazadero Dam/Station G. Below the wooden flume is a dirt hillside with rocks, and a long wooden building can be seen in the background on the right side of the frame.

Photograph looking towards flume and railway tracks at Cazadero Dam/ Station G. A man stands on the railway tracks in the distance, and a dirt hillside drops down between the tracks and the flume.

Photograph showing the left bank of the Clackamas River at the river Mill Dam, taken from the “island.” Near the center of the frame, two men in long jackets stand next to a surveying station. To the left, another man in a hat and jacket looks at the camera. In the distance, men can be seen working on the dam spillway. Written on the negative is “#70M. 11-28-10.”

Photograph showing the camp at the River Mill Dam site, taken from the top of the railroad bridge. Snow blankets the ground throughout the image, and numerous wooden buildings an be seen. Written on the negative is “82M.”

Photograph showing the camp at the River Mill Dam site, taken from the top of the railroad bridge. Snow blankets the ground throughout the image, and numerous wooden buildings an be seen. Written on the negative is “82M.”

Photograph showing the construction of the spillway at the River Mill Dam. At the left side of the frame, a portion of a wooden suspension bridge can be seen. Behind, a railroad bridge spans the space between two cliffs, beyond which wooden buildings are visible. Written on the negative is “#84M. 1-28-11.”

Photograph showing construction at the Little Sandy Dam. A wooden structure is visible at both sides of the flowing river, with men standing on top of the structure. In the background is a wooded hillside and small wooden structure. Written on the negative is “Progress L.S. Dam, Freshet Oct 3, 2911.” (Image note: edge of glass is broken, obscuring some text).

Photograph taken from a side angle showing the incomplete powerhouse at the Little Sandy Dam. The building is surrounded by wooden scaffolding, with wood debris littering the ground. Works can be seen throughout the image. Written on the negative is “#23 Oct, 10. 1911.”

Photograph of the Big Sandy Dam site (likely the Marmot Dam), showing a wooden flume with suited individuals standing in the foreground. At the top of the hillside, a wooden building and platform can be seen. Written on the image is #34, B.S dam site, looking down stream, Oct 14, 1911.” (Image note: glass negative broken at lower right corner).

Photograph showing a temporary wooden dam at the Big Sandy Dam site (likely the Marmot Dam). Two workers stand on the wooden structure while looking upward at the camera. In the background, sandbags, woodpiles, and work tools can be seen. Written on the negative is “#33, Spillway in tempy dam at Big Sandy, Oct 21, ‘11.”

Photograph of Bull Run powerhouse surrounded by scaffolding.