| Abstract: | Land-cover information is used routinely to support the interpretation of water-quality data. The Prototype 1990 Conterminous US Land Cover Characteristics Data Set, developed primarily from Advanced Very High Resolution Radiometer (AVHRR) data, was made available to the US Geological Survey‘s National Water-Quality Assessment (NAWQA) Program. The study described in this paper explored the utility of the 1990 national data set for developing quantitative estimates of the areal extent of principal land-cover types within large areal units. Land-cover data were collected in 1993 at 210 sites in the Central Nebraska Basins, one of the NAWQA study units. Median percentage-corn estimates for each sampling stratum wre used to produce areally weighted estimates of the percentage-corn cover for hydrologic units. Comparison of those areal estimates with an independent source of 1992 land-cover data showed good agreement. -Authors |
| Genre: | Article |
| ProdID: | 70018869 |
| Citation Author: | Zelt, R. B.; Brown, J. F.; Kelley, M. S. |
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| Citation End Page: | 80 |
| Citation Issue: | 4 |
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| Citation Language: | English |
| Citation Larger Work Title: | Geocarto International |
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| Citation Number Of Pages: | 12 |
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| Citation Search Results Text: | Validation of national land-cover characteristics data for regional water-quality assessment; 1995; Article; Journal; Geocarto International; Zelt, R. B.; Brown, J. F.; Kelley, M. S. |
| Citation Start Page: | 69 |
| Citation Volume: | 10 |
| Citation Year: | 1995 |
| Type: | citation/reference |
| Text: | Validation of national land-cover characteristics data for regional water-quality assessment; 1995; Article; Journal; Geocarto International; Zelt, R. B.; Brown, J. F.; Kelley, M. S. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Sun, 1 Jan 1995 00:00 -0600 |
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