CENTRAL GROUND WATER BOARD
State Profile
Ground Water Scenario of Manipur
Area (Sq.km) |
22,327 |
Physiography |
Four major units
|
Drainage |
Mainly drained by river and tributaries of Meghna and Chindwin basin. |
Rainfall (mm) |
1454( average annual) |
Total Districts / Blocks |
9 Districts |
Hydrogeology
The Manipur valley is underlain by a thin veneer of alluvial deposits, which is largely clayey in nature, underlain by rocks of Tertiary age. Ground water occurs under un-confined and confined conditions. Since the upper formations are mainly silty and clayey, open wells have poor yield prospects. However the deeper zone, consisting of sand stones of Tertiary age, forms good aquifers which are under confined conditions, Autoflow conditions are observed in Imphal where the yield of the tubewells vary from 0.5 to 4 m3/hr. The water bearing formations are not extensive. The quality of ground water is generally good.
Dynamic Ground Water Resources (2011) |
|
Annual Replenishable Ground water Resource |
0.44 BCM |
Net Annual Ground Water Availability |
0.40 BCM |
Annual Ground Water Draft |
0.004 BCM |
Stage of Ground Water Development |
1.02 % |
Ground Water Development & Management |
|
Over Exploited |
NIL |
Critical |
NIL |
Semi- critical |
NIL |
Artificial Recharge to Ground Water (AR) |
|
Ground Water Quality Problems |
|
Contaminants |
Districts affected (in part) |
Iron (>1.0 mg/l) |
Bishnupur, Thoubal |
Central Ground Water Authority
Areas Notified for Regulation of ground water development |
NIL |