Natural groundwater discharge area in arid regions (0)
| natural groundwater discharge area in arid regions |
Groundwater abstraction & groundwater mining (1)
| area of heavy groundwater abstraction with over-exploitation |
| area of groundwater mining |
Selected wetland, mostly groundwater related (2)
| selected wetland, mostly groundwater related |
Selected city, partly dependent on groundwater (3)
| selected city, partly dependent on groundwater |
Lake (5)
| large freshwater lake |
| large saltwater lake |
River (6)
| major river |
Continuous ice sheet (7)
| continuous ice sheet |
Boundary of continuous permafrost (8)
| boundary of continuous permafrost |
Area of low rainfall (< 200 mm/a) (9)
| area of low rainfall (< 200 mm/a) |
Area of saline groundwater (> 5 g/l TDS) (10)
| area of saline groundwater (> 5 g/l TDS) |
Groundwater resources and recharge (mm/a) (11)
| MAJOR GROUNDWATER BASINS |
| very high (> 300) |
| high (100 - 300) |
| medium (20 - 100) |
| low (2 - 20) |
| very low (< 2) |
|
| COMPLEX HYDROGEOLOGICAL STRUCTURES |
| very high (> 300) |
| high (100 - 300) |
| medium (20 - 100) |
| low - very low (< 20) |
|
| LOCAL AND SHALLOW AQUIFERS |
| very high - high (> 100) |
| medium - very low (< 100) |
|