| Abstract: | This raster data set represents the percentage of probability of nonpoint-source nitrate contamination (greater than the proposed background concentration of 4 milligrams per liter (mg/L) as N) of recently (defined as less than 50 years) recharged ground water in the High Plains aquifer of the United States. The High Plains aquifer covers approximately 175,000 square miles in eight States; Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming. Elevated nitrate concentrations above the background concentration have been detected in recently recharged (less than 50 years) ground water in the High Plains aquifer. This data set is derived from empirical models developed using multivariate logistic regression to evaluate the vulnerability of the High Plains aquifer to nitrate contamination from nonpoint sources. This data set was generated in a geographic information system from these models and represents the spatial extent of vulnerability of nitrate contamination greater than 4 mg/L across the aquifer. |
| Genre: | USGS Numbered Series |
| ProdID: | 79826 |
| Citation Author: | Qi, Sharon L.; Gurdak, Jason J. |
| Citation Contributing Office: | USGS Colorado Water Science Center |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | - |
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| Citation End Page: | |
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| Citation Keywords: | |
| Citation Language: | ENGLISH |
| Citation Larger Work Title: | |
| Citation LatN: | 043.80709 |
| Citation LatS: | 031.65276 |
| Citation LonE: | -096.25746 |
| Citation LonW: | -106.01646 |
| Citation Month: | |
| Citation No Pagination: | Y |
| Citation Number Of Pages: | |
| Citation Online Only Flag: | Y |
| Citation Phsyical Description: | Online Only |
| Citation Projection: | Albers Conical Equal Area |
| Citation Public Comments: | |
| Citation Publisher: | Geological Survey (U.S.) |
| Citation Series: | Data Series |
| Citation Series Code: | DS |
| Citation Series Number: | 192 |
| Citation Search Results Text: | Percentage of Probability of Nonpoint-Source Nitrate Contamination of Recently Recharged Ground Water in the High Plains Aquifer; 2006; DS; 192; Qi, Sharon L.; Gurdak, Jason J. |
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| Citation Volume: | |
| Citation Year: | 2006 |
| Type: | citation/reference |
| Text: | Percentage of Probability of Nonpoint-Source Nitrate Contamination of Recently Recharged Ground Water in the High Plains Aquifer; 2006; DS; 192; Qi, Sharon L.; Gurdak, Jason J. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| URL (INDEX PAGE): | http://water.usgs.gov/GIS/metadata/usgswrd/XML/ds192_hp_npctprob.xml |
| Date Other: | Fri, 20 Apr 2007 00:00 -0500 |
| Publisher: | Geological Survey (U.S.) |
