Imperial Valley, 1937, Dorothea Lange, courtesy Library of Congress

Full caption:

Irrigation ditch along the road. Imperial Valley, California; Lange, Dorothea, photographer; 1937 Feb.

Lange’s justly famous for her pictures of the people of the Imperial Valley when she travelled there in the late 1930s as a documentarian for the Farm Service Administration. She also took pictures of water. If you want to get lost for an hour or two, the Library of Congress has quite a collection on line.