| Abstract: | Data sets that define the altitude of the base of basin-fill units in the west Salt River Valley were developed for the National Water-Quality Assessment program using a geographic information system. Data that define the land surface and the base of each basin-fill unit within a multilayered aquifer were compiled into a series of raster-data lattices. The lattice of each basin-fill layer was constructed using contour lines from a published hydrogeologic report. The land-surface lattice was constructed from a:250,000-scale digital elevation models of the area. The resulting raster-data set was queried to define the altitude of the base of each basin-fill unit at specified locations. Using a computer script to be run within a geographic information system, a table was produced that provided information that related the altitude of the bottom of the wells to the altitudes of the bases of the basin-fill units. A comparison of the altitude at the bottom of wells with the range in altitude between each basin-fill unit base made it possible to begin to determine the basin-fill unit in which wells were completed. |
| Genre: | USGS Numbered Series |
| ProdID: | 24305 |
| Citation Author: | Rees, Julia A. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | v, 29 p. :col. ill., col maps ;28 cm. |
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| Citation Publisher: | U.S. Dept. of the Interior, U.S. Geological Survey ;
Information Services [distributor], |
| Citation Series: | Open-File Report |
| Citation Series Code: | OFR |
| Citation Series Number: | 99-54 |
| Citation Search Results Text: | Converting contour-line data into data sets for a multilayered aquifer using a geographic information system; 1999; OFR; 99-54; Rees, Julia A. |
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| Citation Year: | 1999 |
| Type: | citation/reference |
| Text: | Converting contour-line data into data sets for a multilayered aquifer using a geographic information system; 1999; OFR; 99-54; Rees, Julia A. |
| URL (THUMBNAIL): | http://pubs.usgs.gov/of/1999/0054/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/of/1999/0054/report.pdf |
| Date Other: | Wed, 1 Sep 1999 00:00 -0500 |
| Publisher: | U.S. Dept. of the Interior, U.S. Geological Survey ;
Information Services [distributor], |
