ground water recharge techniques

1. COLLEGE OF AGRICULTURAL ENGINEERING
SKUAST-K SHALIMAR, SRINAGAR
Topic- Ground Water Recharge
Techniques
Presented By- Rishabh Dev Regd. No.-
B.Tech-2015/198

2. GROUNDWATE
R
• GROUNDWATER IS THE UNDERGROUND WATER WHICH
OCCURS IN THE SATURATED ZONE OF EARTH SURFACE.
• CRACKS AND PORES IN EXISTING ROCKS MAKES THIS
GROUND WATER RESERVOIR.
• GROUND WATER UTILIZED THROUGH WELLS AND TUBE
WELLS.
• THEREFORE THE GROUNDWATER MAY DEFINED AS ALL
THE WATER PRESENT BELOW THE EARTH SURFACE.

3. WHAT IS ARTIFICIAL RECHARGE?
• IT IS THE PROCESS BY WHICH THE GROUND
WATER IS IMPROVED AT A RATE MUCH HIGHER
THAN THOSE UNDER NATURAL CONDITION OF
PERCOLATION.

4. IMPORTANCE OF ARTIFICIAL
RECHARGE
• TO MAXIMIZE STORAGE (LONG-TERM & SEASONAL)
• WATER QUALITY IMPROVEMENT THROUGH DILUTION
• PREVENTING SALINE-WATER INTRUSION & LAND
SUBSIDENCE
• REDUCING REDUCTION VOLUMES FROM RIVER FLOW
• CONTROLLING EFFECTS OF CLIMATE CHANGE
• MAINTAINING DECLINING GROUND WATER LEVELS

5. IDENTIFICATION OF AREAS FOR
RECHARGE
• WHERE GROUND WATER LEVELS ARE DECLINING DUE TO
OVEREXPLOITATION.
• WHERE SUBSTANTIAL PART OF THE AQUIFER HAS ALREADY
BEEN DESATURATED I.E. REGENERATION OF WATER IN WELLS
AND HAND PUMPS IS SLOW AFTER SOME WATER HAS BEEN
DRAWN.
• WHERE AVAILABILITY OF WATER FROM WELLS AND HAND
PUMPS IS INADEQUATE DURING THE LEAN MONTHS.
• WHERE GROUND WATER QUALITY IS POOR AND THERE IS NO
ALTERNATIVE SOURCE OF WATER.

6. TECHNIQUES
Direct
Methods
Surface
Method
Sub-surface
Method
Indirect
Method
Induced
Recharge
Methods
Aquifer
Modification
Method

7. SURFACE METHODS
Percolation
Tank
Flooding
Stream
Augmentation
Ditch & Furrow
System
Contour Bund

8. SUBSURFACE METHODS
Recharge
Wells
Dug Well
Pits &
Shafts

9. Surface
Recharge
Percolation
Tank
Recharge Well Induced Recharge

10. Thank You
SAVE WATER SAVE
EARTH
SAVE
LIFE