Newcomers to Tucson know the Santa Cruz River as a dry bed that can become a rampaging flood after heavy rains. Yet until the late nineteenth century, the Santa Cruz was an active watercourse that
served the region's agricultural needs—until a burgeoning industrial society began to tap the river's underground flow.
New in paperback, 2006!
An important book, no only for scholars of water and the southwestern United States, but also for those interested in examining more closely the complicated ways in which humans interact with and shape the places in which they live. More than just a book about an obscure little river in Arizona, Logan's study transcends its subject matter.
—Ethics, Place, and Environment
Logan has done an excellent job of documenting the ebb and flow of the river over the course of twelve thousand years. . . . An unconventional perspective on the history of a particular place.
The Lessening Stream reviews the changing human use of
the Santa Cruz River and its aquifer from the earliest human presence in the valley to today. Michael Logan examines the social, cultural, and political history of the Santa Cruz Valley while
interpreting the implications of various cultures' impacts on the river and speculating about the future of water in the region.
Logan traces river history through three eras—archaic,
modern, and postmodern—to capture the human history of the river from early Native American farmers through Spanish missionaries to Anglo settlers. He shows how humans first diverted its surface
flow, then learned to pump its aquifer, and today fail to fully understand the river's place in the urban environment.
By telling the story of the meandering river—from its origin in
southern Arizona through Mexico and the Tucson Basin to its terminus in farmland near Phoenix—Logan links developments throughout the river valley so that a more complete picture of the river's
history emerges. He also contemplates the future of the Santa Cruz by confronting the serious problems posed by groundwater pumping in Tucson and addressing the effects of the Central Arizona Project
on the river valley.
Skillfully interweaving history with hydrology, geology, archaeology, and anthropology, The Lessening Stream makes an important contribution to the
environmental history of southern Arizona. It reminds us that, because water will always be the focus for human activity in the desert, we desperately need a more complete understanding of its place
in our lives.