Dam Levels and its Inflows in Tamil Nadu August 2019

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dams in tamilnadu

Here are the Water Levels in Dams and its inflows as of August 2019. Since there was heavy rain at some parts of Tamil Nadu this would be a refreshing report. Thanks to Tamil Nadu Weatherman for the stats.
Mettur Dam – is all set to jump to over 1.0 lakh cusecs tomorrow.
Water from Kabini have started reaching Mettur gates. Present storage is 22.6 tmc against full level capacity of 93.5 tmc. Around 70 tmc is the gap for mettur to fill up. 1.1 lakh cusecs is 10 tmc. Do the maths yourself. 6-7 days of 1.0 lakh cusecs is enough. With KRS dam outflow to reach Mettur, the inflow into mettur will be over 1.5 to 2.0 lakhs cusecs in the coming days.

Middle Cauvery Catchment (Kabini Dam) – Dam is 100% full
The 19.5 tmc Kabini dam is full and the inflow has increased to all time high of 1.13 lakh cusecs and they are releasing about 1.25 lakh cusecs to Mettur Dam.

Middle Cauvery Catchment (KRS Dam) – Dam is 70% full.
Close to 1700 mm in 6 days in Talacauvery. It has full capacity of 49.45 tmc and 70% full. The inflow was 1.08 lakh cusecs and 50000 cusecs have already being released from KRS to mettur anticipating the huge flows from Hemavathy, Harangi and its own catchment.

Upper Cauvery Catchment (Hemavathy Dam) – Dam is 100% full.
Massive rains in Chikmagalur and Hassan districts. It is 37.1 tmc dam and the inflow was all time high of 1.13 lakh cusecs and around 1.00 lakh is released to KRS in the downstream.

Upper Cauvery Catchment (Harangi Dam) – Dam is 100% full
Its a 8.5 tmc dam and overflowing. It has a inflow of 19000 cusecs and the surplus water of 17000 cusecs is being released to KRS dam in the downstream.

Banasurasagar dam in Wayanad – 83% full
Massive rains in the dam with 2 straight 400 mm rainfall. Its a 7.1 tmc dam and has storage of 5.9 tmc. Around 300 cusecs is released from the dam from evening. This will go to the Kabini Dam once overflowing.

Nugu Dam near Kabini – 100% full
Its a 5.4 tmc dam and overflowing. 10000 cusecs has been released from the dam and it comes to Mettur directly after joining with the outflow from Kabini dam.

District Wise Dam Level Update – Tamil Nadu

I. Nilgiris Dams (in order of the size)

  • Bhavanisagar Dam has 61% of water with a storage of 16.3 tmc as against a full capacity of 32.8 tmc. The inflow of 42400 cusecs (~4 tmc) a day. With heavy Rains in Nilgiris expected for two more days, then with regular normal monsoon rains to follow and surplus water from Piloor Dam. There is very good chance for Bhavanisagar Dam to get filled up to full capacity in next one week.
  • Emerald dam is 47% full now with storage of 1.5 tmc against full capacity of 3.4 tmc. Combined inflow into Avalance-Emerald is around 5100 cusecs.
  • Upper Bhavani is 81% full now with storage of 2.5 tmc against full capacity of 3.0 tmc. Its getting 3400 cusecs inflow.
  • Avalanche dam is 70% full now with storage of 1.5 tmc against full capacity of 2.2 tmc. Combined inflow into Avalance-Emerald is around 5100 cusecs.
  • Porthimund Dam is 100% full now with storage of 2.1 tmc against full capacity of 2.1 tmc. Its getting 1100 cusecs inflow.
  • Pykara Dam is 100% full now with storage of 2.0 tmc against full capacity of 2.0 tmc. Its getting 2900 cusecs inflow.
  • Mukurthy Dam is 100% full now with storage of 1.8 tmc against full capacity of 1.8 tmc. Its getting 3200 cusecs inflow.
  • Piloor Dam is overflowing with storage of 1.5 tmc against full capacity of 1.6 tmc. Its getting 31200 cusecs inflow and most of it being released into Bhavani Sagar Dam.
  • Sandyanallah Dam is 59% full now with storage of 0.6 tmc against full capacity of 0.9 tmc. Its getting 2400 cusecs inflow.
  • Parsons Valley Dam is 85% full now with storage of 0.6 tmc against full capacity of 0.7 tmc. Its getting 400 cusecs inflow.

Coimbatore / Valparai Dams

  • Parambikulam Dam now has 54% water with 9.6 tmc storage as against full storage capacity of 17.8 tmc. The inflow into the Dam is 6300 cusecs. With Sholayar dam being full, there will be constant inflow into Parambikulam dam in coming month.
  • Sholayar Dam is now 89% full with storage of 4.8 tmc against full level capacity of 5.4 tmc. Its getting 10200 cusecs inflow. Once full in a day or two, the excess will go in to Parambikulam dam.
  • Aliyar Dam is now 34% full with storage of 1.3 tmc against full level capacity of 3.9 tmc. Its getting 4600 cusecs inflow.
  • Kadamaparai Dam is 72% full with storage of 0.7 tmc against full level capacity of 0.9 tmc. Its getting 1200 cusecs inflow.
  • Upper Aliyar Dam is 100% full with storage of 0.9 tmc against full level capacity of 0.9 tmc. Its getting 1800 cusecs inflow.
  • Siruvani is 84% full now with storage of 0.75 tmc against full capacity of 0.9 tmc. The dam is all set to reach full capacity in coming days.
  • Thunnakkadavu is 100% full with storage of 0.6 tmc against full level capacity of 0.6 tmc. Its getting 400 cusecs inflow

Tiruppur Dams

  • Amaravathy Dam has 60% water with storage of 2.4 tmc against full level capacity of 4.1 tmc with 5100 cusecs inflow. With rains in Valparai and Munnar, the inflow is going to continue in coming days.
  • Thirumurthy Dam has 17% water with storage of 0.3 tmc against full level capacity of 1.7 tmc with 300 cusecs inflow. Once storage is good in Parambikulam, it will be released to Thirumurthy Dam.

Tirunelveli Dams

  • Manimuthar Dam has 17% water with storage of 0.9 tmc against full level capacity of 5.5 tmc . The inflow is 800 cusecs.
  • Papanasam Dam has 52% water with storage of 2.6 tmc against full level capacity of 5.5 tmc. The inflow is at 4000 cusecs. From hopeless storage, the current spell has increased to over 50%. Remember Tirunelveli dams get inflows from North East Monsoon unlike the Valparai, Tiruppur and Nilgiris dams which get inflows only from South West Monsoon.
  • Servalar Dam has 62% water with storage of 0.8 tmc against full level capacity of 1.2 tmc.
  • Vadaku Pachaiyar has 0% water with storage of 0.0 tmc against full level capacity of 0.44 tmc.
  • Gadana Dam has 33% water with storage of 0.12 tmc against full level capacity of 0.35 tmc.

Theni Dams

  • Periyar dam has 52% water with a storage of 4.0 tmc against a full capacity of 7.7 tmc and getting 8800 cusecs inflow. Good chance for Periyar dam to reach full level in the next one week. 1200 cusecs in letout as outflow.
  • Vaigai dam storage is 9% with 0.6 tmc against full storage of 6.1 tmc inflow from periyar dam to Vaigai is around 400 cusecs. Vagai dam can see increase in inflow once Periyar Dam is filled up.
  • Manalar dam has storage of 34% water with 0.14 tmc against full storage capacity of 0.42 tmc.

Kanyakumari Dams

  • Pechiparai dam has storage of 18% water with 0.8 tmc against full capacity of 4.4 tmc. The inflow is 1700 cusecs. Nothing to worry as they get rains in NEM too.
  • Peruchani dam has storage of 28% water with 0.8 tmc against full capacity of 2.9 tmc. The inflow is 1600 cusecs. Nothing to worry as they get rains in NEM too.
  • Upper Kodayar Dam, the wettest place in Kanyakumari has storage of 71% water with 1.8 tmc against full capacity of 2.6 tmc. The inflow is 500 cusecs.
  • Chittar II dam has storage of 44% water with 0.26 tmc against full capacity of 0.6 tmc. The inflow is 200 cusecs.
  • Chittar I dam has storage of 42% water with 0.16 tmc against full capacity of 0.39 tmc. The inflow is 100 cusecs.

Other Non-monsoon area dams

  • Sathanur dam, Thiruvannamalai has 10% water with storage of 0.8 tmc against full capacity of 7.3 tmc. It does not get monsoon rains. Lets wait for Veppasalanam rains in August, September and October.
  • Wellington Dam, Cuddalore has 0% water with 0 tmc against full capacity of 2.6 tmc. Only NEM can generate inflows into the dam.
  • Chembarabakkam Dam, Kancheepuram has 0% water with storage of 0 tmc against fulll capacity 3.6 tmc. Only NEM can generate inflows into the dam.
  • Redhills, Tiruvallur has 0% water with storage of 0 tmc against fulll capacity 3.3 tmc. Only NEM can generate inflows into the dams
  • Poondi, Tiruvallur has 0% water with storage of 0 tmc against fulll capacity 3.2 tmc. Krishna water is a possibility now.
  • Krishnagiri dam, Krishnagiri has 12% water with storage of 0.2 tmc against full capacity of 1.7 tmc. It does not get monsoon rains. Lets wait for Veppasalanam rains in August, September and October.
  • Veeranam, Cuddalore has 4% water with storage of 0.06 tmc against fulll capacity 1.5 tmc. Mettur water is a possibility now.
      TN rainfall in the Ghats ending 8.30 am on 10.08.2019 in mm

      Nilgirs

      Avalanche – 350
      Mukurthi – 241
      Upper Bhavani – 189
      Devala – 159
      Naduvattam – 138
      Gudalur – 126
      Pykara – 104
      Glenmorgan – 97
      Emerald – 99
      Singara – 77
      Sandynallah – 69

      Valparai

      Chinnakallar – 132
      Cincona – 88
      Periyakallar (Valparai PTO) – 82
      Sholayar Dam – 81
      Valparai PAP – 69
      Valparai Taluk Office – 67
      Parambikulam – 60
      Manomboly – 50

      Kanyakumari

      Chittar I – 67
      Kuzhithurai – 66
      Upper Kodayar – 56
      Chittar II – 52
      Pechiparai – 44
      Lower Kodayar – 44
      Mambazhathuraiyar – 42
      Perunchani – 40
      Kottaram – 40
      Mylaudy – 40
      Puthan Dam – 40
      Kaliel – 40
      Suralode – 40

      Theni

      Thekkkady – 96
      Manalar – 60
      Periyar – 43
      Eravangalar – 40

      Kerala Rainfall in mm ending 8.30 am on 10.08.2019
      Min 100 mm

      Wayanad
      Tharoide – 266
      Pookot ~ (230-300)
      Vythri – 210
      Ambalavayal – 175

      Kozhikode
      Vadakara – 296
      Quilandy – 189
      Mahe (Puducherry) – 182
      Kozhikode – 135

      Palakkad
      Ottappalam – 286
      Pattambi – 180
      Thrithala – 176
      Alathur – 120

      Mallapuram
      Karipur AP – 171
      Perinthalmanna – 164
      Angadippuram – 163
      Manjeri – 140
      Ponnani – 100

      Kannur
      Irukkur – 211
      Thalassery – 155
      Kannur – 137
      Mattanur – 130
      Taliparamba – 100

      Kasargode
      Hosdurg – 220
      Kudulu – 120

      Others
      Kakki Dam, Pathanamittha – 128
      Kayamkulam, Alapuzha -111
      Vadakkancherry, Thrissur – 101
      Trivandrum City, Trivandrum – 101

      Kodagu rainfall
      Talacauvery – 322 mm. 4th straight 300 mm rainfall event.

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