How many rivers in tamilnadu




















The utilisable groundwater recharge is 22, MCM. The current level of utilisation expressed as net ground water draft of Over the last five years, the percentage of safe blocks has declined from Over-exploitation has already occurred in more than a third of the blocks The water level data reveals that the depth of the wells ranges from an average of 0.

According to the Central Groundwater Board, there has been a general decline in groundwater level in due to the complete desaturation of shallow aquifers. There has been a considerable failure of irrigation wells in Coimbatore District. Details of water resources of Tamil Nadu in District wise Sl.

No Name of the district Sl. No Name of the district 1. Ariyalur 17 Ramanathapuram 2. Coimbatore 18 Salem 3. Cuddalore 19 Sivagangai 4. Dharmapuri 20 Thanjavur 5. Dindugul 21 Theni 6. Erode 22 Thiruvarur 7. Kancheepuram 23 Thiruvallur 8 Kanniyakumari 24 Thoothukudi 9.

River basins of Tamil Nadu and Water Potential. There are 17 river basins in Tamil Nadu. Cauvery is the only major basin. Of the others, 13 basins are medium and 3 are minor river basins. At 75 percent dependability, the annual surface water generated in the State is Table 6. The State depends on neighbouring States for considerable quantum of flows, which is about Thus, the total surface water potential of the State at 75 percent dependability is Following are the rivers which flow through this southernmost region of the Indian peninsula:.

The climate of this state is tropical type, summers are not too hot nor winters so cold. Rainfalls are fairly widespread throughout the year. The north-east monsoon, which brings rainfall in October and November and sometimes in December also. The south-west monsoon also serves the state from June to September. There is some rain-shadow area in the state, which remains sometimes dry. Tamil Nadu, the southernmost state of India. It is bounded by Andhra Pradesh on the north, Karnataka on the northwest, and Kerala on the west.

The eastern coast has the Bay of Bengal whereas the southern coast has the Indian Ocean as boundaries. The higher percentage of rural population indicates agriculture as mainstay of livelihood. Tamil Nadu has an equatorial, tropical climate in the inlands and an equatorial, maritime climate in its coastal regions. The temperature may go to extremes in some places in the inlands while it tends to be moderate in the coastal areas.

Many areas fall in rain shadow regions receiving less than or around mm rainfall making them drought prone. Ground water potential is assessed about TMC. Surface water resources have been fully harnessed by impounding the available water in large dams, small dams, drinking water reservoir and tanks.

Rivers, tanks and tubewells are major source of surface irrigation. Agriculture is the major source of income of the state. Major food crops are rice, jowar, ragi, bajra, maize and pulses. Commercial crops include cotton, sugarcane, coconuts, tea, coffee, rubber, sunflower, cardamom, cashew, groundnut, chillies, sea same and ginger etc. The state has a number of forest products like timber, sandalwood, pulp and fuel wood. Minor forest products are honey and herbal items.

The farmers of the state are hardworking and specialised in the application of fertilisers especially bio-fertilisers. Efforts are on to improve farming technologies so as to increase yields in the low rainfall areas of the state. Major industries of this state are cotton, heavy commercial vehicles, auto parts, railway coaches, cement, paper, safety matches. Knowledge based industries like I. The mineral base of this state is very rich. The minerals played a part in making the state industrially developed.

Important minerals of the state are lignite, limestone and limestone. The state is an important exporter of tanned skin and leather goods, yarn, tea, coffee, spices, engineering goods, tobacco, handicrafts and black granite. Chennai Refinery Limited has given rise to several petro-based units. Major chemical and fertiliser plants have been established at Cuddalore and Tuticorin.

Cauvery river plays the most important role in the state's irrigation. Priority has been given to canal system of irrigation to modernise the existing large and medium size irrigation projects. Direct flight facilities to major cities of India and world are available from International airport Chennai.



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