| Variable | Coefficient | Probability |
| Constant | 6.96 | 0.00 |
| pH | −0.05 | 0.40 |
| Distance to the Gulf of Mexico | −1.02 | 0.00 |
| Mean Sea Level | 2.62 | 0.02 |
| Public Supply, groundwater withdrawals, total, in Mgal/d | −0.12 | 0.00 |
| Domestic, self-supplied groundwater withdrawals, fresh, in Mgal/d | −0.27 | 0.00 |
| Industrial, self-supplied groundwater withdrawals, total, in Mgal/d | −0.24 | 0.00 |
| Irrigation, groundwater withdrawals, fresh, in Mgal/d | −0.16 | 0.00 |
| Livestock, groundwater withdrawals, fresh, in Mgal/d | 1.43 | 0.00 |
| Aquaculture, groundwater withdrawals, total, in Mgal/d | −1.45 | 0.00 |
| Total groundwater withdrawals, total (fresh + saline), in Mgal/d | 0.13 | 0.00 |