This method (Reticular canal system) of interlinking rivers will give justice to both flood and drought prone areas to the maximum extent. There are many advantages from this system of irrigation like, It, irrigates most of the drought prone areas and thus supply adequate water for agriculture - industry - irrigation, we need not construct costly structures like dams - reservoirs and thus protecting the same, the course of the surface canal will make the water to distribute to all the needy areas and the water will reach the destiny (Sea) only when no area wants the water for any reasons, issues like generation of back water and shifting villages and cities will not arise, we will be able to generate enormous electricity by the hydroelectricity projects โ that, we will be able to create at multiple places where the Primary canal discharges its water, water can be provided / released on the needy basis - with sufficiency, surface water storing capacity in the canal becomes more as it a long canal and it makes the underground water to rise, we can expect more rain and less cyclonic effect as there is better generation of the clouds over the land almost as equivalent as that of the clouds generated over the sea, thin forest can be converted in to thick forest and thus we can make the forest cover of the land with the peoples participation, most of the natural water pathway which remains dry in most of the periods can be made to flow continuously as per our need and we need not construct big structures for this purpose - simple structures like a barrier wall/weir will divert the water from the rivers to the primary canals, farmers looking in to the sky for rain and complications in agriculture due to less rain fall can be prevented, all the present dry well will be filled with water, all the present dams and reservoirs can be made to maintain optimum level of water in all the seasons without depending on the rain from the same river basin, it is possible to eradicate the land classification based on the irrigation like 'dry - semi irrigated - irrigated land' and we can make all the land in to 'irrigated land'. The beauty of the nature can increased with greenery everywhere and small attractive waterfalls at many places.
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Similar to Interlinking rivers 4 - Interlinking Indian Rivers - Short Presentation 3 - Manual on Reticular Canal System 6 - So what (Refer Chapter 10.1) (20)
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Interlinking rivers 4 - Interlinking Indian Rivers - Short Presentation 3 - Manual on Reticular Canal System 6 - So what (Refer Chapter 10.1)
1. Section 5: Reticular canal system for interlinking Indian rivers.
Chapter 10: Reticular canal system (RCS).
3. So, what are the uses of RCS?
165
2. Topic series: 347
Topic 30: Advantages of the reticular canal system.
1) Reticular pattern of canal system is more
advantageous, with this, the entire India can be
irrigated. All the nooks and corners of the India will
get some water supply either through primary or
secondary or tertiary channel system. As compared
to single channel system that connects north
Indian rivers with south Indian rivers the reticular
pattern of canal system is more useful, cost
effective and harmless.
166
3. Topic series: 347
Topic 30: Advantages of the reticular canal system.
It is because, the single channel system,
a) Can irrigate only few areas in the nation, may be 25 - 50
kilometers on either the sides of the channel, if sub
channels are created.
b) At places we may have to dig very deep to make the free
flow of water/it may need underground channels also.
c) If natural calamities like flood occurs most of the south
Indian places and cities may be affected by the flood, and
can cause more damage.
167
4. Topic series: 347
Topic 30: Advantages of the reticular canal system.
It is because, the single channel system,
d) There is an absolute necessity to protect the
control system of this main channel, because evil
forces may put the threat that they are going to
damage the control gate.
e) The expense may be very high as compared to
the benefit, and it needs lot of machine and man
power and local peopleโs participation may be
very less as it is mainly a central channel.
168
5. Topic series: 347
Topic 30: Advantages of the reticular canal system.
It is because, the single channel system,
f) The necessity of shifting many cities/villages may
be required to create one main channel. Since this
channel is very wide and big, we may need to
construct big bridges to connect the people on
either the sides of the main canal, the need to
protect this bridges from the evil forces may also
arise.
169
6. Topic series: 347
Topic 30: Advantages of the reticular canal system.
2) Since reticular pattern of canal system are
consisting of many small to moderate sized
channels that are scattered throughout the India
and no Dams/ Reservoirs of high cost is
constructed, there is no chance that the water
occupying the living area arises. So there is no
need to shift the people from one place to another
place in a big way.
170
7. Topic series: 347
Topic 30: Advantages of the reticular canal system.
3) Natural calamities may decrease in the future with the
existence of RCS, like floods and its damage, as these
reticular channel system may act like a better drainage
system and the rain water may reach its final destiny
with ease. We can utilize the required amount water and
rest of the water we can leave in the channel and the
natural paths to flow freely.
171
8. Topic series: 347
Topic 30: Advantages of the reticular canal system.
4) Some of the wonders like natural reservoir
system may be formed in the future. A depressed
area surrounded by hill may act like a reservoir and
this needs very little construction and maintenance
cost and this can irrigate lot of areas around it for
agriculture.
172
9. Topic series: 347
Topic 30: Advantages of the reticular canal system.
5) At places waterfalls may be created
naturally in the flow path of the water to
such an extent that we can utilize these fall
to create hydro electrical projects.
173
10. Topic series: 347
Topic 30: Advantages of the reticular canal system.
6) We can supply water on required basis,
like less irrigated and more needy areas can
be given more water and we can drain water
from the areas where water already exists
more.
174
11. Topic series: 347
Topic 30: Advantages of the reticular canal system.
7) The total storing capacity of the fresh water over the nation
increases. If we consider that the length of the pc1is 10000kms, pc2
is 10000kms, pc3 is 5000kms and pc4 is 5000kms.Then the total
length of the primary channel becomes 30,000kms. If the water
flowing size of the primary canal is 40 meters in height ร 50 meters
in width, then the total storing capacity becomes, 30,000kms ร
40mts ร 50mts =30,000 ร 1000 ร 40 ร 50 cubic meters
=60,00,00,00,000 cubic meters = 600 cubic kilometers. This volume is
excluding the volume of water present in the river, tributaries, short
pcโs, secondary channels, tertiary channels, quaternary channels and
reservoirs. (They are the approximate values, it will change after the
micro survey).
175
12. Topic series: 347
Topic 30: Advantages of the reticular canal system.
8) Ground water level will rise with reticular pattern of channel
system, as the total area of absorption of surface water increases
and more water sinks in to the ground. If the total length of the
primary channel is 30,000kms (apart from the surface area present
as the floor of the water path ways like river, tributaries, short pcโs,
secondary channels, tertiary channels, quaternary channels and
reservoirs for surface absorption of water) then the total area of
surface for absorption becomes, 30,000kms ร [40mts ร 2 side walls
+ 30mts floor] = 30,000 ร 1000mts ร 110mts =3,30,00,00,000square
meters = 3300 square kilometers (an area with 57.44kilometers
length and 57.44kms breadth).
176
13. Topic series: 347
Topic 30: Advantages of the reticular canal system.
9) Rain fall also increases, as more water and surface area of water
exposed to sunlight increases, more water vapors are generated
and more clouds will be formed, more raining we can expect over
the land. If the total length of the primary channel is 30,000kms
(apart from the water surface exposed for sunlight over the surface
of the water path ways like river, tributaries, short pcโs, secondary
channels, tertiary channels, quaternary channels and reservoirs for
evaporation) then the total area of water surface exposed for
sunlight becomes, 30,000kms ร 50mts = 30,000 ร 1000mts ร 50mts
=1,50,00,00,000 square meters = 1500 square kilometers (an area
with 38.72kilometers length and 38.72kms breadth).
177
14. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Note: Rain โ Raise in the water level in the rivers/tributary โ
Rapid flow of water to the sea โ Rapid empting of water in the
river/tributary within few hours/days โ Less time for absorption
and evaporation โ Less absorption with more utilization of
underground will lead to lowering of underground water & less
evaporation of the water over the land leads to decreased
formation of clouds over the land and less raining over the land.
The cloud formed over the sea has to fly for a long distance and
has to fly above the western hills to reach the land of India to shed
the rain.
With RCS the area of absorption and evaporation increases and
the duration of absorption and the evaporation are also increases.
178
15. Topic series: 347
Topic 30: Advantages of the reticular canal system.
10) As we have already explained in single big
channel system, shifting of villages and cities in a
big way in reticular channel system will not be
there.
179
16. Topic series: 347
Topic 30: Advantages of the reticular canal system.
11) Only the primary channels will be
constructed by the central government,
secondary channels by the state government,
tertiary channels by the district boards,
quaternary channels by the people of VP/AA
itself. So direct peoples participation will be
there and the national economic burden
decreases. The technical assistance may be
provided by the present engineering system.
180
17. Topic series: 347
Topic 30: Advantages of the reticular canal system.
12) The silt formed can be periodically removed
from the primary channel and it can be used as
manure to put over the land present above the
level of the primary channel from where the silt
has taken. And it may act like a good manure as it
contain good amount of organic and inorganic
nutrient necessary for the growth of the plants.
181
18. Topic series: 347
Topic 30: Advantages of the reticular canal system.
13) With better water supply and with the
participation of the people it is possible to
convert all the thin forests in to thick forest
by implanting use full trees in it.
182
19. Topic series: 347
Topic 30: Advantages of the reticular canal system. Thin forest:
183
20. Topic series: 347
Topic 30: Advantages of the reticular canal system. Thick forest:
184
21. Topic series: 347
Topic 30: Advantages of the reticular canal system.
14) Most of the natural water paths
which remains dry during most of the
seasons, especially the rainy seasons
can be converted in to ever flowing
water paths as per our requirement.
185
22. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Dry natural water path ways which flows only for few days in rainy
season (Dry natural water path):
186
23. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Ever flowing water pathways, which flows in all the seasons and with
RCS, the flow in the natural water paths can be made continuous as per
our requirement (Ever flowing water pathway).
187
24. Topic series: 347
Topic 30: Advantages of the reticular canal system.
15) Construction of simple structures
will do greater job in diverting the
river water to the primary canals.
188
25. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Simple barrier wall like this will work : Barrier wall Across kaveri river
Near Danagere. Kollegal taluk, chamarajanagar district.
189
26. Topic series: 347
Topic 30: Advantages of the reticular canal system.
The same :Barrier wall Across kaveri river Near Danagere. Kollegal taluk,
chamarajanagar district.
190
27. Topic series: 347
Topic 30: Advantages of the reticular canal system.
The same: Barrier wall Across kaveri river Near Danagere, Kollegal taluk,
chamarajanagar district.
191
28. Topic series: 347
Topic 30: Advantages of the reticular canal system.
A simple gate like this will maintain the level that we want in the
Primary canals. kaveri river Near Danagere, Kollegal taluk,
chamarajanagar district.
192
29. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Simple gates lake this will effectivel control the flow of water in the
primary canals.
193
30. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Barrier wall Across kaveri river Near Danagere west end ea923.
194
31. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Barrier wall Across kaveri river Near Danagere full view.
195
32. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Barrier wall Across kaveri river Near Danagere east end.
196
33. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Barrier wall Across Kaveri river Near Danagere east end canal origin with
gate.
197
34. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Barrier wall Across Kaveri river Near Danagere east end canal origin
with gate ea695mts.
198
35. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Barrier wall Across kaveri river - The canal behind danagere.
199
36. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Barrier wall Across kaveri river - The canal behind danagere.
200
37. Topic series: 347
Topic 30: Advantages of the reticular canal system.
We can release the required volume of water to the needy canals.
201
38. Topic series: 347
Topic 30: Advantages of the reticular canal system.
16) Complications in agriculture
due to less rain fall can be
prevented:
202
39. Topic series: 347
Topic 30: Advantages of the reticular canal system.
A dying tree due to dehydration.
203
40. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Many trees are dying due to no irrigation:
204
41. Topic series: 347
Topic 30: Advantages of the reticular canal system.
People have worked and waiting for the rain to come.
205
42. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Seeds are implanted but many have dried in the soil.
206
43. Topic series: 347
Topic 30: Advantages of the reticular canal system. A dry well.
207
44. Topic series: 347
Topic 30: Advantages of the reticular canal system.
This was the place from where the excess water was flowing out of the
well a few years ago.
208
45. Topic series: 347
Topic 30: Advantages of the reticular canal system.
After some time the entire tree will fall due to drying. Government
will try to fill the loss, instead of thinking the methods prevent such
types of hazards.
209
46. Topic series: 347
Topic 30: Advantages of the reticular canal system. A dry water path.
210
47. Topic series: 347
Topic 30: Advantages of the reticular canal system.
The check dams constructed across the water paths will remain as the
waste and will not serve its purpose.
211
48. Topic series: 347
Topic 30: Advantages of the reticular canal system.
A plant which is suffering from dehydration from its early life will not
give good yield.
212
49. Topic series: 347
Topic 30: Advantages of the reticular canal system.
The entire plant physiology will alter with the leaves becoming almost
completely dry and then getting some water at some time.
213
50. Topic series: 347
Topic 30: Advantages of the reticular canal system.
17) RCS will fill water to all the places where it is possible to fill the
water like this.
214
51. Topic series: 347
Topic 30: Advantages of the reticular canal system.
18) RCS & Hydro electrical
projects: RCS will be able to
generate โnโ number of electricity
by providing the opportunities at
multiple sites for hydro electrical
projects.
215
52. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Possible areas for Hydro elecrical projects-Ganga elevator-Available
height 500 mts.
216
53. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Possible areas for Hydro elecrical projects-GUT end 870 to YUC start
800-Available height 70 mts.
217
54. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Possible areas for Hydroelecrical projects-YUT end 800 to FPC1
beginning 500-Available height 200 mts.
218
55. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Possible areas for Hydroelecrical projects-FPC1 WE Bandi,Sucri, Jawai,
Sabarmathi, Som 500 areas-Available height 50-100 mts at multiple
places.
219
56. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Possible areas for Hydroelecrical projects-FPC1 Khairi, Banas, Berach 500
areas-Available height 50-100 mts at multiple places.
220
57. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Possible areas for Hydroelecrical projects-FPC1 EE Mand Sankh
Southkoel Subarnarekha Damodhar Rihand 500 areas-Available height
50-100 mts at multiple places.
221
58. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Possible areas for Hydroelecrical projects-FPC1 EE Mand Sankh
Southkoel Subarnarekha Damodhar Rihand 500 areas-Available height
50-100 mts at multiple places.
222
59. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Possible areas for Hydroelecrical projects-Kaveri river elevator-Available
height 230 mts.
223
60. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Possible areas for Hydroelecrical projects-Kaveri Moyar interlinking
path-Available height 100-200 mts.
224
61. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Possible areas for Hydroelecrical projects-FPC1 Amaravathi Nangangi
Vaigai Arjun Vaippar Chittar(End) 500 areas-Available height 100-200
mts at multiple places.
225
62. Topic series: 347
Topic 30: Advantages of the reticular canal system.
19) Among the many reasons for land
inequality irrigation plays a major role, which
can be eradicated. Depending on irrigation
the lands are divided in to dry, semi irrigated
and irrigated land. With RCS we can make all
the lands as irrigated lands, and there will not
be any terms like dry land, drought prone
lands, and semi irrigated land.
226
63. Topic series: 347
Topic 30: Advantages of the reticular canal system.
20) The farmers looking in to the
sky for rain will be completely
stopped.
227
64. Topic series: 347
Topic 30: Advantages of the reticular canal system.
21) Many numbers of falls at many places will make the
nature more beautiful.
228
65. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Summary of advantages.
1. Sufficient water for irrigation, industry and for domestic
purpose.
2. Effective drainage system for natural calamities like
floods.
3. Rise in ground water level, formation of streams,
springs, natural reservoirs.
4. Utilization of nature in the natural way โ nature
friendly- less destruction of nature.
5. Safe even if the system breaks โ electronic control of the
system is possible.
229
66. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Summary of advantages.
6. Economical in creation โ cost benefit view.
7. Decentralization of effort in creation โ easy people and
government participation at all the levels possible.
8. No necessity to shift villages and cities in a big way and
thus we can avoid the problems arising with same.
9. Total consumable land area for creation of the system is
less.
10. No need to construct, protect and maintain long
bridges and big dams.
230
67. Topic series: 347
Topic 30: Advantages of the reticular canal system.
Summary of advantages.
11. Hydro electrical projects can be done with the water falls that
will generate from the RCS.
12. We can supply water on need basis.
13. We can expect increase in the rain fall and if there is a rain fall
any where over the system, it is possible to distribute the rain
water to all the area below.
14. The silt formed can be used for re soiling/ as manure.
15. One or the other river, at one or the other point will be filling
the RCS and thus a constant flow can be maintained in all the
natural and artificial water path way throughout the year.
231
68. Topic series: 348
Topic 31: Disadvantages of the RCS:
1) Road sinking: The water content in the soil may
increase and the soil below the road may sink by the
kinetic pressure over it and over lapping road may get
damaged. The modern roads should be wide, well
constructed, resistant to kinetic pressure, straight.
The loose soil below the road should not displace on
either the sides or the water should not diffuse below
the road in the loose soil layer and the road should
not sink.
232
69. Topic series: 348
Topic 31: Disadvantages of the RCS:
A cement /mud wall with
plastic sheet covering/ layer
of tar (Paint of plastic/tar) is
coated over the outer
aspect of the wall, should
be constructed till the firm
soil layer. This prevents the
water seepage below the
road and soil sink age and
also soil displacement
outside the road area. The
electrical poles, telecom
cables should be outside
the road (outside the wall).
See Color atlas 36 โ Picture 2: Model roads. 233
70. Topic series: 348
Topic 31: Disadvantages of the RCS:
2) Railway tract displacement: As the soil below
the tract sinks the track may displace. Creation of
cement wall and tar layer as mentioned earlier
can prevent the displacement.
234
71. Topic series: 348
Topic 31: Disadvantages of the RCS:
3) At places because of poor water flow, water
stagnation can occur and the soil can become
paste like and people or animal walking over it
may sink inside the water soil paste, to prevent
this, proper water flow pathways should be
constructed, stagnation of water should be
prevented.
235
72. Topic series: 348
Topic 31: Disadvantages of the RCS:
4) To the poor houses water may seep/ooze
from the floor and the inside humidity may
increase, so that necessity of cement
flooring arises for all the houses.
236
73. Topic series: 348
Topic 31: Disadvantages of the RCS:
5) The waste water that is generated from the
village/ factory may enter the reticular canal
system, leading to contamination causes
problems to the next village toward where the
water flows. Every village should have a green
belt all around to where these waste water
should be flowing and trees like teak wood, rose
wood, neem should grow in that area.
237
74. Topic series: 348
Topic 31: Disadvantages of the RCS:
6) Some of the water born diseases like Malaria,
cholera, enteric fever, worm infestation due to
moist soil, diarrheas may increase if the water
flow managements are improper.
238
75. Topic series: 349
Topic 32: Silting and erosion in natural and artificial water pathways:
Is silting is a constant process? Is erosion is more with more rapid
flow?
Deposition of Solid products /Materials like mud/soil/other
products at the undersurface / bank of the river/ water pathways
and also in to the sea is called silting. Generation of this silt occurs
throughout the length of flow of water, starting from the point of
raining till it reaches the sea. When the rain drop falls on the
earth, the water droplet strikes (thuds) on the earth, takes few
particles of soil and other material, it mixes with it, these water
droplets joins together carrying the material that they contain and
start traveling.
239
76. Topic series: 349
Topic 32: Silting and erosion in natural and artificial water pathways:
As the water travels, the force and friction created at
the floor on which it travels and at the edges between
which it travels takes away some more particles and
the water becomes brown. The extent of this
discoloration is directly proportional to the looseness
of the soil and the amount of water friction
development. If the soil is looser then there is more
discoloration (The roots of the plants prevents easy
erosion of soil by acting like miniature barriers). If
there is more rain leading to more flow creates more
force with more friction leads to more erosion and
more discoloration. 240
77. Topic series: 349
Topic 32: Silting and erosion in natural and artificial water pathways:
As this water travel along its course, as the speed of the
water flow decreases or if the flow stops / if it becomes
stagnant, then particles with higher density settles at
the bottom. If the settling increases on one side of the
flow, the entire water path way, may move away from
the area of deposition /silting and thus we may see the
gradual change in the course of the water pathway over
many years. Like this the silt is formed at some places.
241
78. Topic series: 349
Topic 32: Silting and erosion in natural and artificial water pathways:
Erosion of the earth in the water flow path occurs when
the water current takes away the particles present at the
floor and the side wall of the water path. Ultimately when
the river reaches the sea, all the particles will settle
forming million tons of silt at the place, where the river
joins the sea.
If we look in to the composition of silt, it basically contains
the materials present on the top layers of the soil
especially rich in organic materials due to the fallen leaves
and animal products (dead and degraded plant and animal
products) along with inorganic materials like sodium,
potassium, iodine, iron and others. 242
79. Topic series: 349
Topic 32: Silting and erosion in natural and artificial water pathways:
Now the question is if the raining is constant over a period of time
(example over 10Years), the amount of water flow becomes the
constant in the same given period. If the type of soil present over
the given area is constant, then the amount of silt formation also
becomes the constant over the constant period. If the amount of
silt formed is constant with the constant flow of water over a
constant period.
This constant volume of silt formed will have different area of
distribution with different flow dynamics with the establishment of
RCS and this silt is accessible for reutilization as it is not going to
reach the far place/ sea as in the natural system of water flow.
243
80. Topic series: 349
Topic 32: Silting and erosion in natural and artificial water pathways:
The changes, that, we may see in the future with the
establishment of the RCS are;
1. Change in the volume of silt formation.
The silt forming water (brown water) remains the same at the
place where raining occurs, at the place where the rain water
flows till it reaches the river. But the silt generation decreases in
the river distal to the Primary canal as more water is diverted
towards the primary channel and less water is flowing in to the
original river with decreased flow velocity. The excess water
reaching the sea with force decreases with decreased flow of
water in the river, so there is decrease in amount of silt reaching
the sea. Ultimately the total silt production in the natural river
pathway decreases.
244
81. Topic series: 349
Topic 32: Silting and erosion in natural and artificial water pathways:
The amount of brown water generated at the site of
raining and in the water paths till it reaches the primary
channel remains the same, but the flow velocity of
water in the primary channel are less due to less flow
gradient leading to increase in the rate of settlement of
the particles with increase in the silt deposition in the
primary channel. But the silt generation from the
primary channel as such due to erosion of the primary
channel wall and floor is going to be lessened.
245
82. Topic series: 349
Topic 32: Silting and erosion in natural and artificial water pathways:
Comparison between the silt generation in the natural path and the
primary channel are given here.
Natural paths-rivers, tributaries. Primary channel.
1.
Wider flow with less depth
Narrow flow with more depth as
compared to the natural water
path.
2.
Wider contact with loose soil.
(Usually the floor and the side
walls are made of loose soil).
Less contact with loose soil,
usually the side walls and the floor
are made up of hard
structure/rocks (e.g. size of the
primary channel may be 20 to 30
meter depth with 100 to 200
meter width. 246
83. Topic series: 349
Topic 32: Silting and erosion in natural and artificial water pathways:
Comparison between the silt generation in the natural path and the
primary channel are given here.
Natural paths-rivers, tributaries. Primary channel.
3. Flow velocity is variable, more
at some places and slow at
some places. Erosion is common
at the place where the flow
velocity is more (Rapid flow of
water). Deposition / settlement
of suspended particles with silt
formation are more at the place
where the flow velocity is less.
Flow velocity is not very much
variable in the primary channel.
Very minimal difference may be
seen between the site where the
river feeds the primary channel
and the site where it reaches the
next feeding site and the flow
velocity gradually decreases as it
reaches next feeding river. 247
84. Topic series: 349
Topic 32: Silting and erosion in natural and artificial water pathways:
Comparison between the silt generation in the natural path and the
primary channel are given here.
Natural paths-rivers,
tributaries.
Primary channel.
4. Silting and erosion is
irregular along the course
of the river.
More silt depth at the place where the
river feeds the primary channel and
the silt depth goes on decreases till the
primary channel reaches the next
feeding river. The water at the site of
entry to the primary channel contains
the brown water and the water
becomes clear by the time it reaches
the next feeding river. 248
85. Topic series: 349
Topic 32: Silting and erosion in natural and artificial water pathways:
2. Change in the place of silt deposition/ distribution.
The place of silt deposition changes with the
establishment of RCS. The total deposition of silt
decreases at all the water pathway. There is more
deposition of silt at the primary channel where the river
feeds the primary channel. The total amount of silt
entering the sea decreases.
Utilization of silt for re soiling. Please see the section of
advantages of RCS.
249
86. Topic series: 349
Topic 32: Silting and erosion in natural and artificial water pathways:
Summary of disadvantages:
1.Road sinking / train track sinking.
2. Water stagnation and its harmful effect.
3. Water born diseases.
4. Increase in humidity in poor houses.
5. Silting, rock fall, block for flow in the canal
system and others.
All these disadvantage has the solution, that we
need to do.
250