Development of the Salt River Valley began after the
Civil War, when the United States federal government desired to settle territories in the West. Accordingly, surveying in the
Salt River Valley in the Arizona Territory revealed the potential for irrigation-based frontier settlements. The initial settlement, Phoenix, grew slowly, but as the irrigation system along the Salt River expanded, new settlements developed in the valley, which included
Tempe and
Mesa in the east and the towns of Alhambra, Peoria, and Glendale in the northwest. However, the major challenge to the valley's continued agricultural and economic growth was the temperamental Salt River. Its flow was erratic with both droughts and floods straining the farmers. There was a clear need for the reliable delivery of water. Reclamation projects, such as building a storage dam, would not only accumulate and provide enough water for the farmers during a drought, but also decrease the likelihood of disastrous floods during the wet periods. ==The National Reclamation Act of 1902==