2. What is groundwater recharging?
It is hydrological process where water moves downward from the surface
water to groundwater.
Recharge is the primary method that water enters an aquifer.
3. Location of
sites for artificial recharge
• (1) Water (availability, source, turbidity, quality, etc . )
• (2) surface soils
• (3) depth to aquifer
• (4) geologic structure and capacity of the ground-water reservoir
• (5) the presence of aquicludes
• (6) movement of ground water
• (7) location of withdrawal area
7. Ditch and furrows
a series of shallow, flat-bottomed furrows or ditches, closely spaced, and on a
low grade, to spread water throughout the intake area.
8. • Recharge wells are of two types
a)Injection well, where water is
pumped in for recharge and
b)Recharge wells where water
flows under gravity.
Recharge wells
9. Injection well
• One effective
system for recharge
consists of drilling
injection wells into
the aquifer
downstream from a
dam. Water is then
conducted from the
principal spillway to
the wells.
10. Recharge well
• In some cases, wells
that normally are
pumped during the
growing season are
used for recharge
during other seasons.
12. Benefits of Artificial Recharge
Schemes
To maximize storage(long-term & seasonal)
Water quality improvement through dilution
Preventing saline-water intrusion & land subsidence
Reducing reduction volumes from river f low
Controlling effects of climate change
Maintaining declining ground water levels