Due to great deluge in
River Periyar the ancient port town of Muziris in Malabar Coast, which is
depicted in every known map of antiquity, disappeared suddenly and without a
trace. It was presumably because of a cataclysmic event in 1341, in the River
Periyar that altered the geography of the region. A new land mass accreted
suddenly on the western coast from Kodungallur to Alleppy. The flood water
breached the land mass, between the present Fortcochin and Vypeen, and opened
up the present Cochin Estuary or ‘Kochazy’
and harbour and helped in the formation of Vembanad backwater. The Islands
located on the northern side of Cochin estuary is popularly known as the Vypeen
Islands changed access to the River Periyar. It was only the most spectacular
of the geological changes and land formation that have been going on in that
area from time immemorial. A geophysical survey of the region has shown that
200–300 years ago the shoreline lay about three kilometers east of the present
coast and that some 2,000 years earlier it lay even further east, about
6.5 km inland and in those days Trippunithura, Kaduthuruthy, Athirampuxha,
Kottayam, Changanassery and Edathwa were small port towns on that stretch of
coastline. If Muziris had been situated somewhere here in Roman times, the
coast at that time would have run some 4-5 km east of its present line. The
regular silting up of the river mouth finally forced it to cease activity as a
port.
The Great flood of July 1924, or
the popularly known flood of 99, which occurred in 1099 ME in the Malayalam
Calendar, when Rivers Periyar, Meenachil,
Pampa, and others originating from Sahyadri Mountains and hills flooded
in Kerala state, South India. The rain continued for about three weeks.
Many districts of the present day Kerala were deeply submerged in water by this
flood – From Trichur to Ernakulam; from Idukki to Kottayam and even up to
Alappuzha including Kuttanad region. Even a huge mountain called
Karinthiri Malai was washed away by this flood and the road to Munnar also
vanished along with it. As the road to Munnar was lost by this flood, a new
road from Ernakulam to Munnar became necessary. The present day road from
Ernakulam to Munnar was constructed after this event.
The old generation of Kerala believes that the cause of this great flood was a major breach of the Mullaperiyar Dam. That is why the flood was so powerful, even at Munnar, and tore apart even a mountain as big as Karinthiri. The breach of Mullaperiyar occurred 29 years after the dam was constructed. At that time, there was no other Dam in the region and there is no other possible reason that can be attributed for such a destructive flood.
The devastating flood claimed thousands of
lives, animals and birds, and caused severe damages to buildings, roads and
other structures, and heavy damages to crops in Kerala. Most of the areas in
the erst-while Travancore and Cochin states and parts of Malabar region were
submerged under the flood water. In Munnar around 485 cm of rain fall
was reported during the flood and wide spread destruction occurred. Kundala
Valley Railway, one of the first narrow gauge railway lines constructed at
Munnar was completely destroyed by the flood waters.
This flood is still a fearful memory with the old generation still
alive in Kerala - most of them were kids then. Also, as a historical touch of
this flood, the church-records in most ancient churches were also damaged by
this flood. So, in almost all ancient churches, the church records start only
from 1924 AD.
Floods can also bring many benefits, such as recharging ground
water, making soil more fertile and increasing nutrients in some soils.
Flood waters kills pests in the farming land. Flooding can spread nutrients to
lakes and rivers, which can lead to increased biomass and improved
fisheries for a few years.
For some
fish species, an inundated flood plain may form a highly suitable location for spawning
with few predators and enhanced levels of nutrients or food. Bird
populations may also profit from the boost in food production caused by
flooding.
In
the changing scenario of enhanced population, culture and civilization it is
significant for the state to focus their attention on flood safety planning.
Now people are more dependent on electrical power and potable water supply. Floods
also frequently damage power transmission and sometimes power generation,
which then has knock-on effects caused by the loss of power. This includes loss
of drinking water treatment and water supply, which may result in loss of
drinking water or severe water contamination. It may also cause the loss of
sewage disposal facilities. Lack of clean water combined with human
sewage in the flood waters raises the risk of waterborne diseases, which
can include typhoid, cholera and many other diseases depending upon the
location of the flood. Damage to roads and transport infrastructure may make it
difficult to mobilize aid to those affected or to provide emergency health
treatment. Flood waters typically inundate farm land, making the land
unworkable and preventing crops from being planted or harvested, which can lead
to shortages of food both for humans and farm animals. Entire harvests for a
country can be lost in extreme flood circumstances. Some tree species may not
survive prolonged flooding of their root systems. Floods may cause food
shortages leading to price increases as well.
Flood forecasting and flood warning too are important. Critical safety facilities, such as hospitals, emergency-operations centers, and police, fire, and rescue services, should be built in risk prone areas of flooding.
Excerpts from
MEMOIRS
by
Joseph J. Thayamkeril
josephjthayamkeril@gmail.com