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D B Stone

Publications and source records attributed to D B Stone.

61 records · Page 4Linked to original sources
PubMedDate not supplied

Estimating recharge distribution by incorporating runoff from mountainous areas in an alluvial basin in the Great Basin region of the southwestern United States.

A method is described to estimate the distribution of ground water recharge within hydrographic basins in the Great Basin region of the southwestern United States on the basis of estimated runoff from high mountainous areas and subsequent infiltration in alluvial fans surrounding the intermontane basins. The procedure involves a combination of Geographic Information System (GIS) analysis, empirical surface-runoff modeling, and water-balance calculations. The method addresses the need to develop and incorporate constraints on the distribution of recharge in regional-scale ground water flow modeling of arid and semiarid environments. The conceptual approach and methodology were developed for Crescent Valley, Nevada. However, the concept and method are generally applicable to any region where excess precipitation in upland areas is conveyed to lower elevations before it infiltrates to recharge the ground water system. Application of the procedure to a ground water flow model of Crescent Valley appears both qualitatively and quantitatively to result in a more accurate representation of actual recharge conditions than might otherwise have been prescribed.

Environmental Monitoring↗
PubMedDate not supplied

An evaluation of the behavioral aspect of a prevention-oriented oral health program.

The teaching and learning program is not effective in the behavioral dimension, given the data of this evaluation. The Navy Plaque Index was shown to be an unreliable instrument, when utilized with a relatively large number of upper elementary level students by more than one dentist, due to differences in the level of plaque recorded by the dentists.

Child↗