1949 Map of Hagerman

About this map

Snake River hydroelectric development and agricultural irrigation define the landscape of the Hagerman Valley in this mid-century survey. The town of Hagerman sits at the center of a complex network of man-made waterways, including the Main Canal, Big Bend Ditch, and Brailsford Ditch, which redirect water from the Big Wood River and Billingsley Creek to the surrounding plains. The canyon floor shows significant industrial infrastructure, from the Lower Salmon Falls Power Plant to the Idaho State Fish Hatchery and Game Reserve near Upper Salmon Falls. The map also captures several islands within the river system, such as Millet Island and Gridley Island, and notes the location of the Bell Rapids (Submerged), reflecting the changing hydrology of the Snake River as it was harnessed for power and farming.