Geoarchaeological Assessment for the Tres Rios Project, Maricopa County, Arizona
Creators: name: Onken, Jill
name: Waters, Michael R.
name: Homburg, Jeffrey A.
Publisher: name: Statistical Research, Inc.
Year: 2004
Subjects: subject: Gila River
valueUri: https://core.tdar.org/browse/geographic-keyword/3958/gila-river
subject: Tres Rios Wetlands
valueUri: https://core.tdar.org/browse/geographic-keyword/78585/tres-rios-wetlands
subject: Phoenix Basin
valueUri: https://core.tdar.org/browse/geographic-keyword/27/phoenix-basin
subject: Pioneer Period
valueUri: https://core.tdar.org/browse/temporal-keyword/111/pioneer-period
subject: Sedentary Period
valueUri: https://core.tdar.org/browse/temporal-keyword/5504/sedentary-period
subject: Colonial Period
valueUri: https://core.tdar.org/browse/temporal-keyword/5377/colonial-period
subject: Hohokam
valueUri: https://core.tdar.org/browse/culture-keyword/21/hohokam
subject: AZ T:11:94 (ASM)
valueUri: https://core.tdar.org/browse/site-name/105933/az-t1194-asm
subject: Tres Rios
valueUri: https://core.tdar.org/browse/site-name/106120/tres-rios
subject: Domestic Structures
valueUri: https://core.tdar.org/browse/site-type/256/domestic-structures
subject: Canal or Canal Feature
valueUri: https://core.tdar.org/browse/site-type/275/canal-or-canal-feature
subject: Pit House / Earth Lodge
valueUri: https://core.tdar.org/browse/site-type/263/pit-house-earth-lodge
subject: Domestic Structure or Architectural Complex
valueUri: https://core.tdar.org/browse/site-type/251/domestic-structure-or-architectural-complex
subject: Ceramic
valueUri: https://core.tdar.org/browse/material-type/1/ceramic
subject: Chipped Stone
valueUri: https://core.tdar.org/browse/material-type/2/chipped-stone
subject: Charcoal
valueUri: https://core.tdar.org/browse/material-type/20/charcoal
subject: Ground Stone
valueUri: https://core.tdar.org/browse/material-type/7/ground-stone
subject: Mineral
valueUri: https://core.tdar.org/browse/material-type/12/mineral
subject: Optical Luminescence Dating
valueUri: https://core.tdar.org/browse/other-keyword/161027/optical-luminescence-dating
subject: Sediment Analyses
valueUri: https://core.tdar.org/browse/other-keyword/161028/sediment-analyses
subject: Geomorphic Mapping
valueUri: https://core.tdar.org/browse/other-keyword/161025/geomorphic-mapping
subject: Radiocarbon Dating
valueUri: https://core.tdar.org/browse/other-keyword/135975/radiocarbon-dating
subject: Holocene Epoch
valueUri: https://core.tdar.org/browse/other-keyword/161031/holocene-epoch
subject: Chronometric Data Collection
valueUri: https://core.tdar.org/browse/other-keyword/161032/chronometric-data-collection
subject: Backhoe Trench Excavation
valueUri: https://core.tdar.org/browse/other-keyword/134197/backhoe-trench-excavation
subject: Tres Rios Project
valueUri: https://core.tdar.org/browse/other-keyword/161029/tres-rios-project
subject: Soil Analyses
valueUri: https://core.tdar.org/browse/other-keyword/31240/soil-analyses
subject: Pleistocene Epoch
valueUri: https://core.tdar.org/browse/other-keyword/161030/pleistocene-epoch
subject: Remote Sensing
valueUri: https://core.tdar.org/browse/other-keyword/3929/remote-sensing
subject: Stratigraphic Data Collection
valueUri: https://core.tdar.org/browse/other-keyword/161033/stratigraphic-data-collection
subject: Data Recovery / Excavation
valueUri: https://core.tdar.org/browse/investigation-type/5/data-recovery-excavation
subject: Remote Sensing
valueUri: https://core.tdar.org/browse/investigation-type/22/remote-sensing
subject: Geophysical Survey
valueUri: https://core.tdar.org/browse/investigation-type/23/geophysical-survey
subject: Research Design / Data Recovery Plan
valueUri: https://core.tdar.org/browse/investigation-type/9/research-design-data-recovery-plan

description: Statistical Research, Inc. (SRI), under subcontract to ASM Affiliates, conducted geoarchaeological investigations in the U.S. Army Corps of Engineers (COE) Tres Rios project area. The Tres Rios project involves flood control, wetland restoration, water reclamation and reuse (creation of wetland, marsh, and open water areas), and construction of a pipeline and levees. The project area is located in central Arizona in the area surrounding the confluence of the Salt, Gila, and Agua Fria Rivers. The study area contains two distinct reaches of the Gila River. The eastern half of the project area contains the terminal reach of the lower Salt River and its confluence with the Gila River. This 3-km- (2-mile-) long reach is characterized by a wide, unstable channel with multiple low-flow channels and many mid-channel bars and islands, traits resulting from a large sediment load, erodible banks, and highly variable discharges (Graf et al. 1994). The western half of the project area contains the uppermost reach of the lower Gila River, beginning at the Gila-Salt confluence and extending 6.5 km (4 miles) west to the vicinity of the Agua Fria River’s confluence with the Gila. The channel of this reach is also braided; the gradient is significantly lower, however, resulting in denser vegetation and more channel deposition than in upstream reaches (Graf et al. 1994).