Aquifer Type Codes
| Code | Description |
|---|---|
| C | Confined single aquifer |
| M | Confined multiple aquifers |
| N | Unconfined multiple aquifer |
| U | Unconfined single aquifer |
| X | Mixed (confined and unconfined) multiple aquifers |
U.S. Department of the Interior |
U.S. Geological Survey
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Page Last Modified: 2024-1-22
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