4. Precipitation is
slowed down, helps
infiltration
Undergrowth
Humus
Runoff slows down
Precipitation does
not exceed
infiltration
Precipitation does
not exceed
infiltration
WATER TABLE IS
RECHARGED
5. Precipitation is
slowed down, helps
infiltration
Undergrowth
Humus
Runoff slows down
Soil pores gradually fill up
helping infiltration
Soil pores fill up much more
slowly and infiltration
continues
WATER TABLE IS
RECHARGED
8. GRADUAL RISE IN
RIVER
Moderate
Runoff generation
Higher ground water
recharge which
gradually flows
towards the water
body
Moderate
Runoff generation
Higher ground water
recharge which
gradually flows
towards the water
body
WATER TABLE
9. Maintains base flow
in River even during
summers
Subsurface water
gradually flows
towards the water
body even months
after rains
Subsurface water
gradually flows
towards the water
body even months
after rains
WATER TABLE
14. High runoff and
artificial drainage
from the city
High runoff and
artificial drainage
from the city
Low ground
Water flow
WATER TABLE
Low ground
Water flow
15. Low ground
Water flow
High runoff and
artificial drainage
from the city leads
to sudden swelling
of river and flooding
WATER TABLE
Low ground
Water flow
16. Low ground
Water flow
The runoff drains
faster and lesser
water is left in the
river
WATER TABLE
Low ground
Water flow
17. Low ground
Water flow
With no groundwater
flow to recharge the
river in summers,
the river dries out
WATER TABLE
Low ground
Water flow