Dam Levels in Tamil Nadu as on 05.12.2020 – Awesome year for most of the Dams

December 6, 2020
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Mettur Dam – The biggest Dam in Tamil Nadu. Good storage in Mettur Dam for 3rd year in row. Lot of water has been released from Mettur for irrigation. Still it is 72% full in December. I would take it any year on December. Remember most of the catchment areas get rains in South West Monsoon.

Bhavanisagar Dam – The 2nd biggest dam in Tamil Nadu continues to have good storage than 75% storage for over 4 months now.

Coimbatore Dams – Most of the Dams catchment areas get rains in South West Monsoon and even in December they have good storage than normal years. The Top 3 dams Parambikulam, Sholayar and Aliyar are having good storage levels.  Parambikulam the biggest is close to full level for over 3 months now.

Nilgiris Dams – Nilgiris dam catchment areas gets rains mostly in South West Monsoon, so there is some fall in storage as the water is used for electricity generation.

Kanyakumari Dams – Burevi might have missed giving Kanyakumari rains, but the two big dams Pechiparai and Perunchani are still 86% and 77% full. The third biggest dam in Kanyakumari which is Kodayar is 93% full while Chittar I and II both are over 70% full. So inspite of bad North east monsoon so far, the storage in the dams are still very good.

Tirunelveli Dams – Good storage in Papanasam and Manimuthar and they get good rains in December too. So Tirunelveli is big dams are looking very good.

Theni Dams – Periyar Dam and Vaigai has 50% of water. Madurai has got good rains in this north east monsoon this season. Manalar is almost 80% full.

Tiruvannamalai Dams – Krishnagiri dam is full and water is letout. it is not a great year for upstream od Then Pennai, so Sathanur has less than 40% water.

Chennai Dams – What a dream year for Chennai lakes, from all three big lakes (Puzhal, Chembarabakkam, Poondi) water has been released with levels maintained for flood cushion. Veeranam lake too is receiving massive inflow and water is letout for flood cushion. We got more water since 2015. Hope you all remember the special post put up on October 11, that all lakes will be filled to brim this monsoon and this has happened with a month to go.

Note: Please dont ask for any other Dams, this is maximum dam levels, i could get hands on and the cut-off is 100 mcft or 0.10 tmc.

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Heavy Rainfall for Kanyakumari & highwinds for KK, Pamban, Tuty, Vedaranayam- Delta belts

September 26, 2021

We have seen the template so many times, a cyclone crossing north AP or Odisha or West Bengal coast, the it activates the westerlies to  surge and converge over South Kerala and Kanyakumari regions. Even this year May month Cyclone Yaas when it crossed Odisha, Kanyakumari, Ramanathpuram-Pamban, Muthupet-Vedaranayam belt got to see high winds.

Heavy rainfall

Heavy to very heavy rainfall is likely over Kanyakumari and some heavy rains will happen over Tirunelveli ghat areas and Theni ghat areas. Some parts of Tuty will get heavy rains too. South Kerala districts such as Kollam, Idukki, Alapuzha, Pathanamthitta, Eranakulam are also in the path of heavy rains.

High Winds

Sustained Winds of 30-40 km/hr are expected in coastal areas of Kanyakumari, Thoothukudi, Ramanathapuram and Delta belt around Vedaranayam tomorrow.  The gusts (occasional winds) with 55-65 km/hr will be expected in coastal belts of above areas, in addition Tirunelveli will also see the gusts at times. Hence, fishermen are kindly requested to stay at home for two more days in the South TN and South Kerala coast.

Rainfall Recorded in KTCC (Chennai & 100 kms) on 26.09.2021

in mm (min 5 mm)

Katupakkam (near SRM) – 51
Tambaram – 46
Sathyabama (Shollinganallur) – 37
Arakkonam – 36
Vembakkam (near kanchi) – 36
Kelampakkam – 31
Uthandi – 29
RK Pet – 29
Kaveripakkam – 28
Gudmidpoondi – 26
Uthiramerur – 25
Thirukalukundram (near mahabs) – 24
Sholingur – 22
Kanchipuram – 18
Poondi – 18
Tiruporur – 17
Poonamallee – 16
Tiruttani PTO – 13
Meenambakkam – 12
Mamallapuram – 11
Uthukottai – 11
Madipakkam – 9
Tiruvallur – 8
Chengalpet – 8
Korattur Anaicut – 7
Maduravoyam – 6
Walajabad – 5
Thamaraipakkam – 5
Mambalam – 5
Mugalivakkam – 5

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Awesome spell comes to an end, dry days ahead for Tamil Nadu

February 23, 2021

Cuddalore got 186 and 112 mm rainfall on 21 and 22nd February, 2021 respectively. But the rains were spread into 2 days because of the 8.30 am cut-off timings. Actually, the rains happened in single stretch. So close to 300 mm fell at a go in Cuddalore. Without any low pressure or even a trough of low or even a UAC, these are mind blowing rains. People in Cuddalore in particular and Pondy to a ceratain extent have witnessed once in life time February rains, which they wont forget for a while. However the years 1984, 2000 and 2002 rainfall will still stands out as great February rains for Tamil Nadu.

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Overall dry days ahead for much of peninsular India including Tamil Nadu. Lets hope this year the Mango showers are good starting from end of March.

2021 has been a surprise for Tamil Nadu with rains in January and February. Lets see if the trend can continue in March ?  Meanwhile lets see the mind-blowing rainfall in last 2 days in peninsular India.

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