| Abstract: | A procedure using a geographic information system was developed to define urban land use representative of the 1990‘s by overlaying U.S. Bureau of the Census 1990 population density at the block group level on 1970‘s digital land-use data from 1:250,000-and 1: 100,000scale maps. Any area having a population density of 1,000 or more people per square mile is re-classified as "urban" land use in the derivative product. The procedure was applied to 20 study units of the National Water-Quality Assessment program to provide what are considered reasonable indications of urbanization that has occurred since the 1970‘s. |
| Genre: | USGS Numbered Series |
| ProdID: | 27705 |
| Citation Author: | Hitt, Kerie J. |
| Citation Contributing Office: | Geological Survey (U.S.) |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | vi, 15 p. |
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| Citation Publisher: | Geological Survey (U.S.) |
| Citation Series: | Water-Resources Investigations Report |
| Citation Series Code: | WRI |
| Citation Series Number: | 94-4250 |
| Citation Search Results Text: | Refining 1970‘s Land-Use Data With 1990 Population Data to Indicate New Residential Development; 1994; WRI; 94-4250; Hitt, Kerie J. |
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| Citation Year: | 1994 |
| Type: | citation/reference |
| Text: | Refining 1970‘s Land-Use Data With 1990 Population Data to Indicate New Residential Development; 1994; WRI; 94-4250; Hitt, Kerie J. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| URL (INDEX PAGE): | http://pubs.usgs.gov/wri/wri944250/ |
| Date Other: | Fri, 1 Sep 1995 00:00 -0500 |
| Publisher: | Geological Survey (U.S.) |
