Thesis (M.S. - Hydrology and Water Resources)--University of Arizona. / Includes bibliographical references (leaves 184-187).

Thesis (M.S. - Hydrology and Water Resources)--University of Arizona, 1994. / Includes bibliographical references (leaves 133-135).

Thesis (M.S. - Hydrology and Water Resources)--University of Arizona, 1987. / Includes bibliographical references (leaves 77-79).

Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1994. / Vita. Abstract. Includes bibliographical references (leaves 199-200). Also available via the Internet.

No description available.

No description available.

No description available.

A two-dimensional, finite difference model was used to simulate the lowering of the water table below a floodplain in order to affect water conservation by reducing phreatophyte transpiration. Evapotranspiration capture percentages and unit water costs associated with alternative well network designs were calculated in order to determine those factors which are most important in designing an evapotranspiration capture project.

Homol'ovi II is a fourteenth-century, ancestral Hopi pueblo with over 700 rooms. Although known by archaeologists since 1896, no systematic excavations were conducted at the pueblo until 1984. This report summarizes the findings of the excavations by the Arizona State Museum of five rooms and an outside activity area, which now form the core of the interpretive program for Homolovi Ruins State Park. The significant findings reported here are that the excavated deposits date between A.D. 1340 and 1400; that nearly all the decorated ceramics during this period were imported from villages on the Hopi Mesas; that cotton was a principal crop which probably formed the basis of Homol'ovi II's participation in regional exchange; that chipped stone was a totally expedient technology in contrast to ground stone which was becoming more diverse; and that the katsina cult was probably present or developing at Homol'ovi II. These findings from the basis for future excavations that should broaden our knowledge of the developments taking place in fourteenth-century Pueblo society connecting the people whom archaeologists term the Anasazi with those calling themselves Hopi.

The stable isotopes of the conservative element boron, 11B and 1°B, have been employed as co- migrating isotopic tracers to determine the origin of nitrate observed in groundwater from a large capacity (2500 gpm) irrigation well in the Avra Valley of southeastern Arizona. The isotopic ratios of the conservative element, boron, provided an identifying signature for various nitrate rich source waters. Additional chemical parameters were also examined to corroborate the isotopic indications. Findings of this investigation indicate that most of the nitrate observed in groundwater from well CMID 18 at the beginning of the 1993 irrigation season was due to municipal wastewater contamination. As the irrigation season progressed, an increasing proportion of nitrate was contributed by irrigation return flow from neighboring agricultural fields.