Persistent Link:
http://hdl.handle.net/10150/191715
Title:
Evaluation of ground-water quality in the Cortaro area, Arizona
Author:
Martin, Peter,1957-
Issue Date:
1980
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Chemical analyses of samples from 120 wells in the Cortaro area show that most of the area is underlain by ground water of a quality suitable for most agricultural and domestic purposes. Some wells near the Rodger Road sewage treatment plant and a septic tank area west of the Santa Cruz River, however, yield water with concentrations of nitrate exceeding the U.S. Environmental Protections Agency maximum contaminant level of 45 milligrams per liter for public water supplies. In general, concentrations of nitrate and boron significantly exceed background levels for the two ions in ground water downgradient of the Rodger Road sewage treatment plant. The high nitrate and boron concentrations are indicative of sewage-effluent recharge. The areal distribution of nitrate, boron, and other chemical constituents suggests that Santa Cruz River underflow and the recharged sewage effluent do not follow the Santa Cruz River channel but rather appear to follow high transmissivity zones in the aquifer. Records of historic ground-water quality indicate that the chemical character of ground water in the Cortaro area has changed with time. In general, ground water has degraded in quality since 1944 beneath the Santa Cruz River flood plain; whereas, east of the river the ground-water quality has remained relatively unchanged. The changes in ground-water quality seem largely related to discharge of sewage effluent.
Type:
Thesis-Reproduction (electronic); text
LCSH Subjects:
Hydrology.; Groundwater -- Arizona -- Cortaro Basin.; Groundwater -- Pollution -- Arizona -- Cortaro Basin.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Hydrology and Water Resources; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Davis, Stanley N.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleEvaluation of ground-water quality in the Cortaro area, Arizonaen_US
dc.creatorMartin, Peter,1957-en_US
dc.contributor.authorMartin, Peter,1957-en_US
dc.date.issued1980en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractChemical analyses of samples from 120 wells in the Cortaro area show that most of the area is underlain by ground water of a quality suitable for most agricultural and domestic purposes. Some wells near the Rodger Road sewage treatment plant and a septic tank area west of the Santa Cruz River, however, yield water with concentrations of nitrate exceeding the U.S. Environmental Protections Agency maximum contaminant level of 45 milligrams per liter for public water supplies. In general, concentrations of nitrate and boron significantly exceed background levels for the two ions in ground water downgradient of the Rodger Road sewage treatment plant. The high nitrate and boron concentrations are indicative of sewage-effluent recharge. The areal distribution of nitrate, boron, and other chemical constituents suggests that Santa Cruz River underflow and the recharged sewage effluent do not follow the Santa Cruz River channel but rather appear to follow high transmissivity zones in the aquifer. Records of historic ground-water quality indicate that the chemical character of ground water in the Cortaro area has changed with time. In general, ground water has degraded in quality since 1944 beneath the Santa Cruz River flood plain; whereas, east of the river the ground-water quality has remained relatively unchanged. The changes in ground-water quality seem largely related to discharge of sewage effluent.en_US
dc.description.notehydrology collectionen_US
dc.typeThesis-Reproduction (electronic)en_US
dc.typetexten_US
dc.subject.lcshHydrology.en_US
dc.subject.lcshGroundwater -- Arizona -- Cortaro Basin.en_US
dc.subject.lcshGroundwater -- Pollution -- Arizona -- Cortaro Basin.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineHydrology and Water Resourcesen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.chairDavis, Stanley N.en_US
dc.identifier.oclc212908451en_US
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