Phase 1 Data Testing at AZ U:15:1(REC) on Private Land and Mapping of Historic Architecture at AZ AZ:3:215(ASM) and AZ U:16:303(ASM) on Federal Land near Ashurst-Hayden Diversion Dam, Pinal County, Arizona: Photos

As authorized under the Arizona Water Settlements Act of 2004, the San Carlos and Irrigation Drainage District (SCIDD) is undertaking a 10-year rehabilitation project of its irrigation system. SCIDD is the non-Indian irrigation component of the San Carlos Irrigation Project (SCIP), which provides irrigation water to the communities of Florence, Coolidge, and Casa Grande in Pinal County, Arizona. The initial focus of the SCIDD Rehabilitation Project is the rehabilitation of the Ashurst-Hayden Diversion Dam and its associated headworks, which diverts water from the Gila River for SCIP; the armoring of a segment of the south bank of the Gila River, and the construction of a sediment removal pond and storage area downstream of Ashurst-Hayden Diversion Dam. Following consultation with project stakeholders on Archaeological Consulting Services', Ltd. (ACS) Class III survey of the project area, the Bureau of Reclamation, Phoenix Area Office (Reclamation) directed ACS to conduct Phase 1 data testing at AZ U:15:1(REC) to determine the presence, nature, extent, and integrity of the site's subsurface deposits. In addition, Reclamation directed ACS to conduct additional electronic mapping, photography, and archival research for the historic retaining wall (Feature 15) at AZ U:16:303(ASM) and for the large diversion gate (Feature 2) along the Florence-Casa Grande Canal (AZ AA:3:215[ASM]) in order to assess their eligibility to for inclusion in the National Register of Historic Places (NRHP) under Criterion C. These are the photos taken during this project. The photo log can be found at tDAR ID: 378174. The report can be found at tDAR ID: 377938.根据2004年《亚利桑那州水定居法案》的授权，圣卡洛斯灌溉排水区（San Carlos and Irrigation Drainage District, SCIDD）正推进其灌溉系统的十年修复工程。SCIDD是圣卡洛斯灌溉项目（San Carlos Irrigation Project, SCIP）的非印第安灌溉组成部分，该项目为亚利桑那州皮纳尔县的弗洛伦斯、库利奇与卡萨格兰德社区提供灌溉用水。SCIDD修复工程的初期核心工作包括：修复阿舍斯特-海顿分水坝及其配套渠首工程（该设施从希拉河为SCIP引水）、加固希拉河南岸一段堤岸，以及在阿舍斯特-海顿分水坝下游修建沉沙池与存储区域。在与项目相关方就考古咨询服务有限公司（Archaeological Consulting Services, Ltd., ACS）对项目区域开展的三级考古调查完成磋商后，垦务局菲尼克斯地区办事处（Bureau of Reclamation, Phoenix Area Office, 以下简称垦务局）要求ACS对AZ U:15:1(REC)遗址开展第一阶段数据检测，以明确该遗址地下遗存的存在性、性质、分布范围与完整性。此外，垦务局还要求ACS针对AZ U:16:303(ASM)遗址处的历史挡土墙（编号15遗迹），以及弗洛伦斯-卡萨格兰德运河（AZ AA:3:215[ASM]）沿线的大型分水闸门（编号2遗迹）开展补充电子测绘、摄影勘查与档案研究，以评估其是否符合依据标准C纳入国家史迹名录（National Register of Historic Places, NRHP）的资格。本数据集收录本次项目拍摄的全部照片。照片日志可通过tDAR编号378174查询获取，相关研究报告可通过tDAR编号377938查询获取。