Probability of nitrate contamination of recently recharged groundwaters in the conterminous United States
January 1, 2002
A new logistic regression (LR) model was used to predict the probability of nitrate contamination exceeding 4 mg/L in predominantly shallow, recently recharged ground waters of the United States. The new model contains variables representing (1) N fertilizer loading (p < 0.001) , (2) percent cropland-pasture (p < 0.001), (3) natural log of human population density (p < 0.001), (4) percent well-drained soils (p < 0.001), (5) depth to the seasonally high water table (p 0.83.
Citation Information
| Publication Year | 2002 |
|---|---|
| Title | Probability of nitrate contamination of recently recharged groundwaters in the conterminous United States |
| DOI | 10.1021/es0113854 |
| Authors | B. T. Nolan, K.J. Hitt, B. C. Ruddy |
| Publication Type | Article |
| Publication Subtype | Journal Article |
| Series Title | Environmental Science & Technology |
| Index ID | 70024706 |
| Record Source | USGS Publications Warehouse |