Developed along the banks of the Salt River, the cities of Phoenix, Tempe, and Mesa, Arizona, both both depended on the river and feared its seasonal flooding. Controlling the river emerged as a central challenge to economic development in the Salt…

"Mother and daughter, father and son, may all be found splashing about in the cooling water of the Salt River canal, commonly known as the 'Town Ditch,' almost any evening now. There are regular canal 'beaches' where Phoenicians congregate in great…