Central Arizona Project Regulatory Storage Division

Historic American Engineering Record (HAER) No. AZ-6A examines the origins, construction, use, and significance of the Theodore Roosevelt Dam Power Plant and Transformer House, located in south-central Arizona along the Salt River. The report contains a narrative description, drawings, maps, and historic photographs of the dam's power plant and transformer house. As the key structure in one of the first major federally sponsored Reclamation projects in the West, Theodore Roosevelt Dam...

Historic American Engineering Record (HAER) No. AZ-11 presents a written historical summary and relevant historical documentation about the construction and use of Waddell Dam, which was the only water storage dam successfully built by private interests in central Arizona. Sponsored by the Phoenix Area Office of the Bureau of Reclamation, this HAER documentation was undertaken as mitigation for the construction of New Waddell Dam as part of the Central Arizona Project, and the submersion of the...

Flooding along the Salt, Gila, Verde, and Agua Fria Rivers in February and March of 1978 resulted in extensive damage to property in Central Arizona and in the disruption of ground transportation and commerce in the greater Phoenix area. Major flooding also occurred along these rivers in December, 1978 and February, 1980. The recognition of this flooding problem, and of requirements for the regulatory storage of Central Arizona Project (CAP) water, prompted the U.S. Department of the Interior,...

In compliance with Section 110 of the National Historic Preservation Act (54 U.S.C. 306102), the Bureau of Reclamation, Phoenix Area Office (Reclamation) contracted with Tierra Right of Way Services to relocate, re-evaluate, and re-record previously identified cultural resources situated on Reclamation-managed lands near Lake Pleasant, in Maricopa and Yavapai Counties, Arizona. Between November 2, 2020 and March 18, 2022, Tierra Right of Way archaeologists conducted several field sessions to...

This poster presents the results of several projects completed around New Waddell Dam and Lake Pleasant Regional Park.

Between October, 1990, and January, 1991, SWCA, Environmental Consultants conducted archaeological survey of approximately 1,800 acres of Tonto National Forest land in the Roosevelt Basin, central Arizona. This project, the Roosevelt Bajada Survey, was done to provide survey data on portions of the Basin that are not being investigated by Arizona State University (ASU) as part of its Roosevelt Lake Project. The survey recorded 111 new sites and rerecorded five previously known sites; four...

Under the sponsorship of the Bureau of Reclamation, the New Waddell Dam Borrow Areas Mitigative Data Recovery Project, more simply known as the Waddell Project, performed data recovery at 17 sites in the vicinity of Lake Pleasant, Arizona. Supplemental surveys conducted under the same contract added two sites to the inventory slated for investigation. The project area, composed of multiple survey areas, was spread across two drainages, the Agua Fria and New River, in what is considered the...

At the request of the Bureau of Reclamation–Phoenix Area Office (PXAO), ACS conducted Phase 1 cultural resource assessments and investigations at AZ T:4:150(ASM), a multicomponent rockshelter site in Lake Pleasant Regional Park, in 2008. The site was being impacted by increased visitation and Reclamation is seeking to mitigate those impacts. ACS archaeologists completed surface collection, mapping, and soil coring at the site. These investigations confirmed that the site held the potential to...

At the request of the Bureau of Reclamation–Phoenix Area Office, ACS conducted surface collection, mapping, and soil coring at AZ T:4:150(ASM), a multicomponent rockshelter site in Lake Pleasant Regional Park. The site is being impacted by increased visitation and Reclamation is seeking to mitigate those impacts. The investigations identified four features; these included a thermal pit (Feature 1), a rock ring (Feature 2), the rockshelter (Feature 3), and a previously unrecorded rockpile...

At the request of the Bureau of Reclamation–Phoenix Area Office (PXAO), ACS conducted Phase 1 cultural resource assessments and investigations at AZ T:4:150(ASM), a multicomponent rockshelter site in Lake Pleasant Regional Park, in 2008. The site was being impacted by increased visitation and Reclamation is seeking to mitigate those impacts. ACS archaeologists completed surface collection, mapping, and soil coring at the site. These investigations confirmed that the site held the potential to...

At the request of the Bureau of Reclamation–Phoenix Area Office (PXAO), ACS conducted Phase 1 cultural resource assessments and investigations at AZ T:4:150(ASM), a multicomponent rockshelter site in Lake Pleasant Regional Park, in 2008. The site was being impacted by increased visitation and Reclamation is seeking to mitigate those impacts. ACS archaeologists completed surface collection, mapping, and soil coring at the site. These investigations confirmed that the site held the potential to...

At the request of the Bureau of Reclamation–Phoenix Area Office (PXAO), ACS conducted Phase 1 cultural resource assessments and investigations at AZ T:4:150(ASM), a multicomponent rockshelter site in Lake Pleasant Regional Park, in 2008. The site was being impacted by increased visitation and Reclamation is seeking to mitigate those impacts. ACS archaeologists completed surface collection, mapping, and soil coring at the site. These investigations confirmed that the site held the potential to...

At the request of the Bureau of Reclamation–Phoenix Area Office (PXAO), ACS conducted Phase 1 cultural resource assessments and investigations at AZ T:4:150(ASM), a multicomponent rockshelter site in Lake Pleasant Regional Park, in 2008. The site was being impacted by increased visitation and Reclamation is seeking to mitigate those impacts. ACS archaeologists completed surface collection, mapping, and soil coring at the site. These investigations confirmed that the site held the potential to...

In 2008, at the request of the Bureau of Reclamation–Phoenix Area Office (PXAO), Archaeological Consulting Services, Ltd. (ACS) conducted Phase 1 cultural resource assessments and investigations at AZ T:4:150(ASM), a multicomponent rockshelter site in Lake Pleasant Regional Park. These investigations confirmed that the site held the potential to yield important information about the Prehistoric, Protohistoric, and Historic period occupations of the Lake Pleasant area. Please see...

At the request of the Bureau of Reclamation–Phoenix Area Office, ACS conducted Phase 2 data recovery at the Lake Pleasant Rockshelter site (AZ T:4:150[ASM]), Yavapai County, Arizona. Based on the results of Phase 1 investigations conducted at the site (Pinter et al. 2009), Reclamation determined that potentially significant subsurface cultural deposits were present that could provide important new data on prehistoric, protohistoric, and historic Native American and Euroamerican occupation of the...

ACS conducted Phase 2 data recovery at the Lake Pleasant Rockshelter site (AZ T:4:150[ASM]) in 2010 at the request of the Bureau of Reclamation, Phoenix Area Office. The proposed work plan for Phase 2 (Pinter et al. 2009) was accepted by Reclamation, and was implemented in two sessions due to inclement weather and rising lake levels. The first session occurred in January 2010, followed by a hiatus to allow the lake level to drop and the weather to cool; the second and final session occurred in...

ACS conducted Phase 2 data recovery at the Lake Pleasant Rockshelter site (AZ T:4:150[ASM]) in 2010 at the request of the Bureau of Reclamation, Phoenix Area Office. The proposed work plan for Phase 2 (Pinter et al. 2009) was accepted by Reclamation, and was implemented in two sessions due to inclement weather and rising lake levels. The first session occurred in January 2010, followed by a hiatus to allow the lake level to drop and the weather to cool; the second and final session occurred in...

The Roosevelt Community Development Study (RCD) was one of three data recovery mitigative studies that the Bureau of Reclamation funded to investigate the prehistory of the Tonto Basin in the vicinity of Theodore Roosevelt Dam. The series of investigations constituted Reclamation's program for complying with historic preservation legislation as it applied to the raising and modification of Theodore Roosevelt Dam. Reclamation contracted with Desert Archaeology, Inc. to complete the research for...

The Roosevelt Community Development Study (RCD) was one of three data recovery mitigative studies that the Bureau of Reclamation funded to investigate the prehistory of the Tonto Basin in the vicinity of Theodore Roosevelt Dam. The series of investigations constituted Reclamation's program for complying with historic preservation legislation as it applied to the raising and modification of Theodore Roosevelt Dam. Reclamation contracted with Desert Archaeology, Inc. to complete the research for...

The Roosevelt Community Development Study (RCD) was one of three data recovery mitigative studies that the Bureau of Reclamation funded to investigate the prehistory of the Tonto Basin in the vicinity of Theodore Roosevelt Dam. The series of investigations constituted Reclamation's program for complying with historic preservation legislation as it applied to the raising and modification of Theodore Roosevelt Dam. Reclamation contracted with Desert Archaeology, Inc. to complete the research for...

The Roosevelt Community Development Study (RCD) involved the testing and excavation of 27 sites in the Lower Tonto Basin of central Arizona. This is one of three related data recovery projects undertaken in the Tonto Basin for the Bureau of Reclamation prior to the raising of the Roosevelt Lake dam. The results of the RCD project are presented in four Anthropological Papers of the Center for Desert Archaeology: Anthropological Papers No. 12 is the research design; Anthropological Papers No. 13...

The Roosevelt Community Development Study (RCD) was one of three data recovery mitigative studies that the Bureau of Reclamation funded to investigate the prehistory of the Tonto Basin in the vicinity of Theodore Roosevelt Dam. The series of investigations constituted Reclamation's program for complying with historic preservation legislation as it applied to the raising and modification of Theodore Roosevelt Dam. Reclamation contracted with Desert Archaeology, Inc. to complete the research for...

The Roosevelt Community Development Study (RCD) involved the testing and excavation of 27 sites in the Lower Tonto Basin of central Arizona. This is one of three related data recovery projects undertaken in the Tonto Basin for the Bureau of Reclamation prior to the raising of the Roosevelt Lake dam. The results of the RCD project are presented in four Anthropological Papers of the Center for Desert Archaeology: Anthropological Papers No. 12 is the research design; Anthropological Papers No. 13...

The Roosevelt Platform Mound Study (RPMS) was one of three mitigative data recovery studies that the Bureau of Reclamation funded to investigate the prehistory of the Tonto Basin in the vicinity of Theodore Roosevelt Dam. The series of investigations constituted Reclamation's program for complying with historic preservation legislation as it applied to the raising and modification of Theodore Roosevelt Dam. Reclamation contracted with the Arizona State University Office of Cultural Resource...

The Theodore Roosevelt dam studies impact mitigation program consisted of three data recovery studies that the Bureau of Reclamation funded to investigate the prehistory of the Tonto Basin in the vicinity of Theodore Roosevelt Dam. The research was necessary to mitigate any adverse effects related to modifying and raising the height of the Theodore Roosevelt Dam in the Tonto Basin. A planning team composed of archaeologists from the Bureau of Reclamation, Tonto National Forest, and the State...

The Roosevelt Platform Mound Study (RPMS) was one of three mitigative data recovery studies that the Bureau of Reclamation funded to investigate the prehistory of the Tonto Basin in the vicinity of Theodore Roosevelt Dam. The series of investigations constituted Reclamation's program for complying with historic preservation legislation as it applied to the raising and modification of Theodore Roosevelt Dam. Reclamation contracted with the Arizona State University Office of Cultural Resource...

This monograph is a collection of papers presented at the 1991 Annual Meeting of the Society for American Archaeology, New Orleans. These papers present preliminary results after two years of work on the eight year mitigation program investigating Salado Platform Mound Villages in the Tonto Basin, Arizona. Each paper constitutes an individual chapter. They include: 1. Introduction 2. Pursuing Southwestern Social Complexity in the 1990s 3. Modeling the Development of Complexity in the...

The Roosevelt Platform Mound Study (RPMS) was one of three mitigative data recovery studies that the Bureau of Reclamation funded to investigate the prehistory of the Tonto Basin in the vicinity of Theodore Roosevelt Dam. The series of investigations constituted Reclamation's program for complying with historic preservation legislation as it applied to the raising and modification of Theodore Roosevelt Dam. Reclamation contracted with the Arizona State University Office of Cultural Resource...

The Roosevelt Platform Mound Study (RPMS) was one of three mitigative data recovery studies that the Bureau of Reclamation funded to investigate the prehistory of the Tonto Basin in the vicinity of Theodore Roosevelt Dam. The series of investigations constituted Reclamation's program for complying with historic preservation legislation as it applied to the raising and modification of Theodore Roosevelt Dam. Reclamation contracted with the Arizona State University Office of Cultural Resource...

This report is the fifth site description volume for the Roosevelt Platform Mound Study and describes archaeological investigations at Cline Terrace Mound. Cline Terrace Mound is part of the Cline Terrace Complex, which is located at the northwestern end of the Tonto Basin, along the eastern bank of Tonto Creek. Cline Terrace Mound is the largest site in the complex and is located in its middle, with many other sites in the areas to the northwest and southeast along Tonto Creek. The smaller...

The Roosevelt Rural Sites Study (RRS) was one of three data recovery mitigative studies that the Bureau of Reclamation funded to investigate the prehistory of the Tonto Basin in the vicinity of Theodore Roosevelt Dam. The series of investigations constituted Reclamation's program for complying with historic preservation legislation as it applied to the raising and modification of Theodore Roosevelt Dam. Reclamation contracted with Statistical Research, Inc. to conduct this study. The RRS was...

The Roosevelt Rural Sites Study (RRS) was one of three data recovery mitigative studies that the Bureau of Reclamation funded to investigate the prehistory of the Tonto Basin in the vicinity of Theodore Roosevelt Dam. The series of investigations constituted Reclamation's program for complying with historic preservation legislation as it applied to the raising and modification of Theodore Roosevelt Dam. Reclamation contracted with Statistical Research, Inc. to conduct this study. The RRS was...

The Roosevelt Rural Sites Study (RRS) was one of three data recovery mitigative studies that the Bureau of Reclamation funded to investigate the prehistory of the Tonto Basin in the vicinity of Theodore Roosevelt Dam. The series of investigations constituted Reclamation's program for complying with historic preservation legislation as it applied to the raising and modification of Theodore Roosevelt Dam. Reclamation contracted with Statistical Research, Inc. to conduct this study. The RRS was...

The Roosevelt Rural Sites Study (RRS) was one of three data recovery mitigative studies that the Bureau of Reclamation funded to investigate the prehistory of the Tonto Basin in the vicinity of Theodore Roosevelt Dam. The series of investigations constituted Reclamation's program for complying with historic preservation legislation as it applied to the raising and modification of Theodore Roosevelt Dam. Reclamation contracted with Statistical Research, Inc. to conduct this study. The RRS was...