Karst springs (0)
| Spring with low flow discharge ≥ 2 m³/s |
| Spring with low flow discharge < 2 m³/s |
| Submarine spring |
| Thermal spring |
| Water abstraction structure in karst aquifer |
Cave systems (1)
| Cave systems |
Border between exposed and non-exposed karstifiable rocks (2)
| Border between exposed and non-exposed karstifiable rocks |
Selected city, partly dependent on groundwater (3)
| Selected city, partly dependent on groundwater |
Boundary of continuous permafrost (4)
| Boundary of continuous permafrost |
Surface water (5)
| Continuous ice sheet |
Karstifiable rocks (potential karst aquifer) (6)
|