Photograph showing a wooden plank and log bridge crossing a small running creek, taken from a slight side angle. A Ford Model T Pickup (1916) is on the bridge facing forward. Trees and other foliage can be seen throughout the image. Written on the negative is “E301.09-O-39” and “36.”

Negative of a photographic postcard showing the Estacada Bridge over the Clackamas River in Estacada, Oregon. There are trees on both banks of the river. Handwriting on negative reads, "Clackamas River and Bridge - Estacada, Ore. Christian 11-6006."

Photograph of the Oregon Electric Railway bridge over the Willamette River at Wilsonville, Oregon. The bridge is under construction. Taken from the shore of the river, looking at the bridge. Handwriting on the back of the print reads, "Oregon Electric Ry. Wilsonville Bridge nearing completion. Frederick Prahl, General Roadmaster (died 1909), 'in charge of construction,' 1906 - 07. Presented Jan 18, 1956 by Margaret L. Chappell - granddaughter, Addie M. Sliven - daughter, 2535 Willamette Blvd. Portland 11 Ore." Postmark stamp on the back of the print reads, "Wilsonville, Sep. 17 P.M. 1907, Oregon."

Photographic postcard showing a river. A few people fish from the shore. Writing on bottom of postcard reads, "826, Clackamas Tavern Fishing Ground near Oregon City, Ore."

Two young men sit in a canoe and paddle through a small opening of the Willamette Falls Locks on the Willamette River in Oregon City. The man who sits in front in the canoe wears a sweatshirt that reads, "Oregon." The canoe has the word "Willamette" written on the side. The caption on the negative sleeve reads, "University of Oregon students on canoe trip from Eugene to Portland - going through locks at Oregon City" (negative 4 of 8).

Two young men stand on a wooden platform in the Willamette River and hold onto a canoe in the water. They are at the Willamette Falls Locks. The canoe has the word "Willamette" written on the side. The caption on the negative sleeve reads, "University of Oregon students on canoe trip from Eugene to Portland - going through locks at Oregon City" (negative 2 of 8).

Photograph showing damage to a fenced area due to the 1964 Christmas Flood (likely in the Clackamas River area). An man-made canal can be seen on the right side of the frame, with damaged fencing running along the river to the left. Much of the fencing appears to have fallen downhill towards the rapidly moving river. In the foreground, two men in long jackets face away from the camera. (Image note: see related image PGE 64-606-8.2).

Photograph showing damage to a hillside, fence, and canal. At the left side of the frame is a rapidly flowing river (likely the Clackamas River), with a deteriorated hillside on its banks.

Photograph showing a spillway structure during the 1964 Christmas flood (taken December of 1964). Water can be seen rapidly spilling down the structure, with a small building visible at the far side of the river. High water levels can be seen upriver, in addition to forested hillsides and trees.

Photograph showing water cascading down Willamette Falls in Oregon City. Industrial buildings can be seen just above the falls, with a rocky cliff and houses visible in the background. Above the waterfall is a spillway. Written one of the of large industrial buildings is "Publishers Paper Co."

Photograph looking across a body of water showing five children running on a path. Another wider path can be seen to the right of the group, and small wooden bridge can be seen further back over the water. Trees and ferns are visible throughout the image.

Photograph looking across a body of water showing four children running on a waterside path. Trees and ferns can be seen a hillside above the path.

Photograph, looking towards the powerhouse structure at the Oak Grove Dam. Large pipes can be seen behind the building, extending up a large hill towards a tank at the top. To the left of the stone building, a retaining wall and metal frame structure can be seen. Written on the negative is "49-289."

Photograph looking upstream, below proposed upper dam site at Cazadero Dam/Station G. A railroad track and flume can be seen running into the distance around a hillside, and two possible construction vehicles are visible. The river can be seen on the left side of the frame.

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 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 showing the flume at Cazadero Dam/Station G during a flood. Rapidly moving water is visible in the Clackamas River below the flume, and a wooden building can be seen on a hillside above.

Photograph showing the fishway Cazadero Dam/Station G. A man sits in a boat looking at the camera, with the wooden dam structure is visible behind. Part of the flume can be seen along the right side of the frame.

Photograph taken during a flood at Cazadero Dam/Station G. A large amount of water flows down the spillway on the left side of the image, and the flume is visible across the water.

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

Photograph of the Cazadero Dam taken in front of the spillway. Water flows over the ledge into a pool at the base, and another stream of water can be seen spilling down on the right side of the frame. The stacked wooden dam structure is visible to the left of the main spillway.

Photograph taken from a side angle, looking across a suspension bridge at Cazadero Dam/Station G. The bridge leads to steps, which go to the top of the hill across the water. Several buildings and transmission poles can be seen at the top of the hill. On the left side of the frame, the edge of a brick building can be seen.