FLOOD AND SOIL EROSION IN
ASSAM
A flood occurs when water
overflows or inundates land that's normally dry. This can happen in a multitude
of ways. Most common is when rivers or streams overflow their banks. Excessive
rain, a ruptured dam or levee, rapid ice melting in the mountains, or even an
unfortunately placed beaver dam can overwhelm a river and send it spreading
over the adjacent land.
The situation began to turn critical ever since the state
experienced pre-monsoon showers in April and May this year. The breach in
embankments along the Brahmaputra river and its various tributaries has caused
flooding in almost 23 out of 35
districts in the state and has submerged crops in over 2 lakhs hectares. Every year, over 31.6 lakh hectares
of land in Assam is flood prone. Of this, around 9.5 lakh hectares gets
directly affected by floods each
year. The total damage caused exceeds Rs 160 crore annually.
Almost 80% of the famous
Kaziranga National Park submerged, Assam’s pride – the one-horned Rhinos and other wildlife across the state, have had to
face the brunt of swelling waters.
Morigaon in lower Assam has been most affected since last few
decades, where over 3.6 lakh people have had to face flood waters. The entire
Majuli riverine island, that forms a large part of Jorhat district, lies
submerged, affecting over 1.71 million people.
Due t o heavy rains in
Arunachal Pradesh, Bhutan and Upper Assam have resulted in the Brahmaputra and
its tributaries to flow above the danger mark. The excess water has broken
embankments in many places causing severe floods along the route, especially in
regions of Lower Assam.
Soil erosion is defined as
the wearing away of topsoil. Topsoil is the top layer of soil and is the most
fertile because it contains the most organic, nutrient-rich materials.
Therefore, this is the layer that farmers want to protect for growing their
crops and ranchers want to protect for growing grasses for their cattle to
graze on.
The Major causes of
flood and soil erosion are discussed below- there are basically two types of
causes of erosion like Natural cause and Man-made causes. One of the most
important natural cause of soil erosion is Geology and Geomorphology of the
region Physiographic condition in the valley Seismic activity Excessive
rainfall. And some man-made causes are like Drainage congestion due to man-made
embankments Human encroachment of reverie areas, The building of embankments
along the Brahmaputra and its
tributaries has only added to flooding
waters breaking embankments and so on.
1.
We can prevent soil erosion by using some method like Plant grass and shrubs. ...
2.
Add mulch or rocks.
...
3.
Use mulch matting to
hold vegetation on slopes. ...
4.
Put down fiber logs.
...
5.
Build retaining walls.
...
6.
Improve drainage. ...
7.
Reduce watering if
possible. ...
8.
Avoid soil compaction.
Some images of soil erosion in past time-
I personally have an appeal to the govt. to take necessary action amd activities towards
helpless people. They have also rights to live.Despite investments by
successive central or state governments, it is time to review the long term
cost-benefit analysis of measures undertaken and see whether the solutions
attempted so far have addressed the problem at its root.
Composer-
Hitesh prankul Barman.M-9085881642.
_______________________________________________________________________
.
soil erosion is a serious threat to humans and nature. Not only it causes natural calamaties such as flood and landslides, but also it robs soil of its fertility.
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