Photograph showing a cement dam structure at Timothy Lake before water release. A dirt road curves through the frame and crosses the dam structure. A dense forested area can be seen in the background along the edge of the excavated area.

Photograph showing Timothy Lake early in the water release process. Lower parts of the lake are covered in water, with new dirt and cut stumps visible at higher levels. A low forested mountain can be seen in the distance. Written on the negative is "56-251."

Photograph showing Timothy Lake early in the water release process. A bridge of cut logs and wood planks extends to the far shore of the lake, with a rowboat moored to a section of the structure. Cut stumps on a hillside can be seen in the distance. Written on the negative is "56-251."

Photograph showing a large stream of water exiting a pipe and flowing towards the camera. In the background are several hills of dirt and rock, as well as a cement bridge. Written on the negative is "56-254."

Photograph taken from a high angle and looking downward at a large stream of water being released from a pipe attached to a small building. Two automobiles can be seen next to the building, one with "PGE" painted on the drivers side door. Behind the building is a cutaway hillside with dirt and rocks. Written on the negative is "56-254."

Photograph taken from a high angle and looking downward at a large stream of water being released from a pipe attached to a small building. A man can be seen standing to the right of the building, and two automobiles are parked in front. Water flows away from the building into the trees. Uphill is a dirt road and embankments. Written on the negative is "56-254."

Photograph taken from a high angle and looking downward at a large stream of water being released from a pipe attached to a small building. Just below the camera, a man faces towards the side and points at the water. Behind the building is a cutaway hillside with dirt and rocks. Written on the negative is "56-254."

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 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.

Negative of a photographic postcard showing the Mill River Power Plant at the River Mill Dam in Estacada, Oregon. Water from the Clackamas River goes over the spillway in the background. Power lines carry electricity from the plant. Handwriting on negative reads, "Mill River Power Plant - Estacada, Ore. Christian 11-6007."

Negative of a photographic postcard showing the Mill River Power Plant at the River Mill Dam in Estacada, Oregon. Water from the Clackamas River goes over the spillway. Handwriting on negative reads, "Mill River Power Plant - Estacada, Ore. Christian 11-6010."