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dc.contributor.authorHarris, R.C.
dc.date.accessioned2018-09-29T02:19:17Z
dc.date.available2018-09-29T02:19:17Z
dc.date.issued2000-09-01
dc.identifier.citationHarris, R.C., 2000, Tritium as a tracer of groundwater sources and movement in the Safford Basin, Graham County, Arizona. Arizona Geological Survey Open File Report, OFR-00-09, 56 p.
dc.identifier.urihttp://hdl.handle.net/10150/630026
dc.descriptionThe Arizona Geological Survey (AZGS) performed a study to measure the tritium content of waters form various sources in the Safford Basin, part the upper Gila River watershed. The concentration of the naturally occurring radioactive isotope of hydrogen, known as tritium, was measured to determine the "age" of groundwater from different sources. The project area is shown on Figure 1. Water balance calculations and aquifer tests suggest upwelling of groundwater from the deep basin-fIll aquifer into the shallow alluvial aquifer of the Gila floodplain (Hanson and Brown, 1972; Brown, 1989). Based on the widespread occurrence of evaporites in the Safford basin fill (Harris, 1997) and the isotopic compositions of evaporites, deep well water, and river water (Harris, 1999a), natural water sources such as artesian leakage and springs may be an important source ofTDS in the Gila River. If this is the case, attempts to mitigate water quality problems in the Gila River by focusing on specific human activities, such as agriculture, may be misdirected. The purpose of the pilot study is to assess the utility of the tritium technique as applied to determining the degree of mixing between "old", deep groundwater in contact with highly soluble salts in the basin-fill sediments, and "young", shallow groundwater that constitutes a mixture of subflow from tributaries, infiltration of Gila River water, and possible infiltration of irrigation water. This study will help water management agencies make informed decisions regarding issues of water quality in the Gila River and how to apply appropriate mitigation measures regarding salinity. (56 pages)
dc.language.isoen
dc.relation.ispartofseriesOFR-00-09
dc.relation.urlhttp://repository.azgs.az.gov/uri_gin/azgs/dlio/235
dc.rightsArizona Geological Survey. All rights reserved.
dc.subjectArizona Geological Survey Open File Reports
dc.subjectGila River
dc.subjectArizona
dc.subjectGraham County
dc.subjectSafford Basin
dc.subjectGeology
dc.subjecthydrology
dc.subjectgroundwater quality
dc.subjectevaporites
dc.subjectdating
dc.subjectTritium
dc.subjectgeochronology
dc.titleTritium as a tracer of groundwater sources and movement in the Safford Basin, Graham County, Arizona
csdgm.bounding.west-109.962
csdgm.bounding.east-109.083
csdgm.bounding.north33.2479
csdgm.bounding.south32.4356
dc.description.collectioninformationDocuments in the AZGS Document Repository collection are made available by the Arizona Geological Survey (AZGS) and the University Libraries at the University of Arizona. For more information about items in this collection, please contact azgs-info@email.arizona.edu.
refterms.dateFOA2018-09-29T02:19:17Z


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