About forty miles north of Phoenix, Arizona, Perry Mesa is today part of Agua Fria National Monument, but during the late thirteenth and early fourteenth centuries, this windswept arid landscape became the site of numerous farming communities. This book explores why people moved to Perry Mesa at that time. Analyses of Perry Mesa contrast with those of the iconic large-scale migrations in the prehistoric Southwest such as the Kayenta diaspora and the gathering of the clans at Hopi. Unlike those long-distance movements into occupied regions, the Perry Mesa case is one of relatively localized aggregation on a largely vacant landscape. But, as was discovered with the iconic migrations, ethnogenesis (the creation of new identities) took hold on Perry Mesa, making it an extremely interesting counterpoint to the better-known migrations of the period.
     Contributors to this volume examine the migration process under two explanatory frameworks: alliance and landscape. These frameworks are used to explore competing hypotheses, positing either a rapid colonization associated with an alliance organized for warfare at a regional scale, or a more protracted migration as this landscape became comparatively more attractive for migrating farmers in the late thirteenth century.
     As the first major publication on the archaeology of Perry Mesa, this volume contributes to theoretical perspectives on migration and ethnogenesis, the study of warfare in the prehistoric Southwest, the study of intensive agricultural practices in a marginal environment, and the cultural history of a little studied and largely unknown portion of the ancient Southwest. It not only documents the migration but also the ensuing birth of a new ethnic identity that arose from the coalescence of diverse groups atop Perry Mesa.

In the prehispanic Southwest, Pueblo Grande was the site of the largest platform mound in the Phoenix basin and the most politically prominent village in the region. It has long been held to represent the apex of Hohokam culture that designates the Classic period.

New data from major excavations in Phoenix, however, suggest that little was "classic" about the Classic period at Pueblo Grande. These findings challenge views of Hohokam society that prevailed for most of the twentieth century, suggesting that for Pueblo Grande it was a time of decline rather than prosperity, a time marked by overpopulation, environmental degradation, resource shortage, poor health, and social disintegration. During this period, the Hohokam in the lower Salt River Valley began a precipitous slide toward the eventual abandonment of a homeland that they had occupied for more than one thousand years.

This volume is a long-awaited summary of one of the most important data-recovery projects in Southwest archaeology, synthesizing thousands of pages of data and text published in seven volumes of contract reports. The authors—all leading authorities in Hohokam archaeology who played primary roles in this revolution of understanding—here craft a compelling argument for the eventual collapse of Hohokam society in the late fourteenth century as seen from one of the largest and seemingly most influential irrigation communities along the lower Salt River.

Drawing on extremely large and well-preserved collections, the book reveals startling evidence of a society in decline as reflected in catchment analysis, archaeofaunal assemblage composition, skeletal studies, burial assemblages, artifact exchange, and ceramic production. The volume also includes a valuable new summary of the archival reconstruction of the architectural sequence for the Pueblo Grande platform mound.

With its wealth of data, interpretation, and synthesis, Centuries of Decline represents a milestone in our understanding of Hohokam culture. It is a key reference for Southwest archaeologists who seek to understand the Hohokam collapse and a benchmark for anyone interested in the prehistory of Arizona.

Among desert farmers of the prehistoric Southwest, irrigation played a crucial role in the development of social complexity. This innovative study examines the changing relationship between irrigation and community organization among the Hohokam and shows through ceramic data how that dynamic relationship influenced sociopolitical development.
 

David Abbott contends that reconstructions of Hohokam social patterns based solely on settlement pattern data provide limited insight into prehistoric social relationships. By analyzing ceramic exchange patterns, he provides complementary information that challenges existing models of sociopolitical organization among the Hohokam of central Arizona.

Through ceramic analyses from Classic period sites such as Pueblo Grande, Abbott shows that ceramic production sources and exchange networks can be determined from the composition, surface treatment attributes, and size and shape of clay containers. The distribution networks revealed by these analyses provide evidence for community boundaries and the web of social ties within them.

Abbott's meticulous research documents formerly unrecognized horizontal cohesiveness in Hohokam organizational structure and suggests how irrigation was woven into the fabric of their social evolution. By demonstrating the contribution that ceramic research can make toward resolving issues about community organization, this work expands the breadth and depth of pottery studies in the American Southwest.