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| Water-bearing stage (symbol) |
Acreage of stage [1000 km2] |
Nature of voids |
Available resources 12,50 km3 [%] |
Available resources in Main Groundwater Reservoirs 7,35 km3 [%] |
Approved resources on Jan. 1, 1992 14,40 km3 [%] |
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| Quarternary (Q) | 234 | p | 65.0 | 51.3 | 54.5 |
| Tertiary (Tr) | 191 | p | 11.0 | 5.5 | 10.9 |
| Cretaceous (K) | 70 | f | 13.0 | 23.1 | 13.9 |
| Jurassic (J) | 60 | f,k | 5.0 | 11.7 | 10.7 |
| Triassic (T) | 15 | f,k | 3.0 | 7.1 | 10.7 |
| Older Stages (S) | -– | f,f,k | 3.0 | 2.3 | 10.7 |
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| Chapter Homepage |
SOE Homepage |
GRID-Warsaw Homepage |
MEP Homepage |