More than 90 feared dead due to failure of suspension pedestrian bridge built across Machchhu river in the town of Morbi, Gujarat due to bad renovation and overcrowding. Machhu river is known for the worst dam collapse in Independent India on Aug 1979, killing >5000 in Morbi 1/3
Machhu river originate in Jasdan hills. It flows for 141km, with a basin area of 2515sqkm, flows into little Rann of Kachchh, dry basin with a ~550mm rainfall. On 11 Aug 1979, due to heavy rain, Machhu dam-2 saw a inflow of >4lakh cusec above designed capacity of 2lakh cusec 2/3
On 11 Aug-1979, Macchu-2 dam built just upstream of Morbi town collapsed, creating a flood with height >20-30ft, submerging Morbi town killing >5000 people. Machhu river, an important source of water in the parched region. 3/3
I had deleted my old post. I wanted to use a video of bridge on the normal day. But many misunderstood that I was quoating bridge collapsed due to shaking. When i heard the accident on Macchu in Morbi, I remembered, oh that place with worst dam accident, RIP to the innocent souls
This bridge accident is due to overcrowding and bad renovation carried out due to criminal negligence. This is ~220m length bridge, it meant, in crowed situation >450people can stand. Suspension bridge all shake, we hold the rope for safety. should not break the bridge
This bridge is not entry free, you have to pay tickets to enter the bridge. Bridge connects the famous Darbargadh palace to old palace+BAPS temple in the ceramic city of Morbi. Below bridge, water is stored for 15-20ft by a check dam. Killed many kids

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More from @TNGeography

Oct 9
#TamilNadu current population is ~7.7Cr. Out of 194 countries in the world, only 19 countries have populations larger than #TN. Of that 19, only Bangladesh has more population density. So, Tamil Nadu is one of the most densely populated(~600per sqkm) regions in the world 1/3
Tamil Nadu is 7th largest state in terms of population in India. It is 10th largest "state" in the area. It has 3.96% of India's landmass 5.5% of its population. It has ~1.2% of utilizable surface water in India, that is ~850TMC out of ~75000TMC national utilizable water 2/3
#TamilNadu population density is ~600 people per sqkm. It is the fifth most densely populated "State" in India. India's avg population density is ~425 people per skm. TN state area is 3.21 crore acres incl all rivers, forests, roads..etc. That is 0.4 acre of land per person 3/3
Read 7 tweets
Oct 7
Present cultural/religious historical debate are amusing. Current avg age of TN is 30yrs old. If the state does not develop economically within next 15years, it will never develop. If not now then its never. We can fight religious, cultural and caste war later 1/4
Our state is poor compared to global avg in gdp and many health indicators. This is a time, we need to have pointed focus on economy, wealth creation and job. Providing better drinking water, education, air, environment. To create strong foundation for future 2/4
If TN get distracted based on religious, cultural line, it will be a historical injustice to the future generation. State need to focus on diverse economical & career opportunity, otherwise, we will loose our intelligent people. Left with passionate people debating in street 3/4
Read 4 tweets
Oct 7
Katteri waterfalls formed by Katteri river in the southern Nilgiris dt in #TamilNadu. Katteri river originate near Lovedale at the height of 2300m. It is a major tributary of Coonoor river, that joins Bhavani. Katteri river has two small scenic dams & numerous waterfalls 1/2
Southern Nilgiri's with places like Huligal, Manjacombai-Geddai, Kinnakorai are less crowded scenic natural treasures. They have many natural streams, waterfalls, thick forest, estates..etc. 2/2 ImageImage
For full video refer
Read 4 tweets
Sep 5
Bangalore sits above 2900ft, one have to be master in bad planning to flood a high altitude, rich metro city.

All cities are not made equal, cities like Mumbai & Chennai with their flat terrain, costal tides, heavy rainfall are geographically flood vulnerable.
#bangalorerains
I meant, places like Bangalore, flood mitigation is easier & less trivial/complex. You need to follow gradient, valleys.Higher flow speed meant small drain could evacuate more water, it doesn't stagnate in this terrain. Old Bangalore withstood these rain with avg drain system 1/n
Chennai/Mumbai sit in 5-7m height, water flow very slowly, stagnate more. In these "Mega cities", canal depth cant go above 5m(shallow), otherwise sea water will enter the city. They also receive heavy rainfall. So, flood mitigation is non-trivial and complex plan is required 2/n
Read 11 tweets
Sep 3
#TamilNadu comes in top 5 state in India in-terms of Bird diversity. State recorded >560unique bird species(~40% of India). Our hills, wetlands, plains/lakes filled with diverse bird species. This video shows birding in Nilgiris by famous wildlife biologist Surya Ramachandran 1/3
Every stream has its own story from insects, mammals, amphibians, birds..etc. Small stream will inhibit 10000's of insects that keep the forest healthy by controlling un-necessary larva's, mosquitos.etc. This video shows damsels in streams of Nilgiris 2/3
By building dams, we are not just storing the flood, but we are also stopping the small dry month flows, that is the important lifeline of the forest eco-system. Kindly refer Surya Ramachandran YouTube channel to know more about our wildlife. 3/3
Read 4 tweets

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