Alaska Road Commission

Cookman Collection #2

June 30, 1935

This image is a foreground view down the length of two forms of "shear dam" structures. The far structure is composed of two rows of driven wooden piles with logs laid between them. The piles are tied together with cables. In immediate foreground is a partial view of a different structure composed of vertical logs assembled side by side slanted away from the water and partially covered with moderate sized rocks. A man stands at left looking away toward the river in middle ground and the forested far shore in background.

Matanuska Valley, Alaska

Black & White Paper Print, 3-1/2" x 5-3/4"

Erosion Control-Matanuska-Rt75L#3x-Coo