The image shows a black and white photograph of an irrigation canal dam. Water is flowing out from the spillway, creating a frothy stream as it hits the bottom below. The structure appears to be made of concrete with multiple slabs or walls forming the spillway, leading down into what seems like a ditch or channel for water conveyance. Vegetation and wild grasses can be seen around the edges of the dam on either side.
There is handwritten text at the top right corner that reads "J-Ervis," likely indicating the photographer's name or an associated tagment. The image has been framed within a border, suggesting it may have been part of a collection or portfolio by Dorothea Lange as indicated in the source information provided.