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Sunday, July 14, 2013

INDUS RIVER BASIN

The Indus Basin
1. The Indus Basin is formed by the Indus and its tributaries.
2. It is located in the states of Jammu and Kashmir, Himachal Pradesh and Punjab.
3. The Indus flows over 2900 kms in length. Other important rivers of this basin are Satluj, Beas, Ravi, Chenab and Jhelum.
4. The highland (commonly known as Ambala- Saharanpur water divide) separates the Basin from the Ganga Basin. Rivers flow in this Basin from north-west to south-west.
5. This Basin has fertile land and a dense network of canals for irrigation.

Indus River, Tibetan and Sanskrit Sindhu, Sindhi Sindhu, or Mehran,  great trans-Himalayan river of South Asia. It is one of the longest rivers in the world, with a length of some 1,800 miles (2,900 km). Its total drainage area is about 450,000 square miles (1,165,000 square km), of which 175,000 square miles (453,000 square km) lie in the Himalayan ranges and foothills and the rest in the semiarid plains ofPakistan. The river’s annual flow is about 272 billion cubic yards (207 billion cubic metres)—twice that of the Nile River and three times that of the Tigris and Euphrates rivers combined. The river’s conventional name derives from the Tibetan and Sanskrit name Sindhu. The earliest chronicles and hymns of the Aryan peoples of ancient India, the Rigveda, composed about 1500 bce, mention the river, which is the source of the country’s name.
TRIBUTARY OF INDUS



Description[edit]


The ultimate source of the Indus is in Tibet; it begins at the confluence of the Sengge and Gar rivers that drain the Nganglong Kangri and Gangdise Shan mountain ranges. The Indus then flows northwest through Ladakh and Baltistan into Gilgit, just south of the Karakoram range. The ShyokShigarand Gilgit rivers carry glacial waters into the main river. It gradually bends to the south, coming out of the hills between Peshawar and Rawalpindi. The Indus passes gigantic gorges 4,500–5,200 metres (15,000–17,000 feet) deep near the Nanga Parbat massif. It flows swiftly across Hazara and is dammed at the Tarbela Reservoir. The Kabul River joins it near Attock. The remainder of its route to the sea is in the plains of the Punjab and Sindh, where the flow of the river becomes slow and highly braided. It is joined by the Panjnad at Mithankot. Beyond this confluence, the river, at one time, was named the Satnad River (sat = "seven", nadÄ« = "river"), as the river was now carrying the waters of the Kabul River, the Indus River and the five Punjab rivers. Passing by Jamshoro, it ends in a large delta to the east of Thatta.The Indus River provides key water resources for the economy of Pakistan - especially the Breadbasket of Punjab province, which accounts for most of the nation's agricultural production, and Sindh. The word Punjab means "water of five rivers" and the five rivers are JhelumChenabRaviBeas andSutlej, all of which finally merge in Indus. The Indus also supports many heavy industries and provides the main supply of potable water in Pakistan.
The Indus is one of the few rivers in the world to exhibit a tidal bore. The Indus system is largely fed by the snows and glaciers of the Himalayas, Karakoram and the Hindu Kush ranges of Tibet, the Indian state of Jammu and Kashmir and the Northern Areas of Pakistan respectively. The flow of the river is also determined by the seasons - it diminishes greatly in the winter, while flooding its banks in the monsoon months from July to September. There is also evidence of a steady shift in the course of the river since prehistoric times - it deviated westwards from flowing into the Rann of Kutch and adjoining Banni grasslands after the 1816 earthquake.
The traditional source of the river is the Senge Khabab or "Lion's Mouth", a perennial spring, not far from the sacred Mount Kailash, and is marked by a long low line of Tibetan chortens. There are several other tributaries nearby which may possibly form a longer stream than Senge Khabab, but unlike the Senger Khabab, are all dependent on snowmelt. The Zanskar River which flows into the Indus in Ladakh has a greater volume of water than the Indus itself before that point.

Category:Dams on the Beas River

Category:Dams on the Jhelum River

Category:Dams on the Ravi River

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Category:Dams on the Chenab River

KRISNA BASIN


Salient Features of Krishna Basin
Basin Extent
Longitude
Latitude
73° 17’ to 81° 9’ E
13° 10’ to 19° 22’ N
Length of Krishna River (Km)1400
Catchment Area (Sq.km.)258948
Average Water Resource Potential(MCM)78120
Utilizable Surface Water Resource (MCM)58000
Live Storage Capacity of Completed Projects (MCM)41803.98
Live Storage Capacity of Projects Under Construction (MCM)7743.54
Total Live Storage Capacity of Projects (MCM)49547.52
No. of Hydrological Observation Stations52
No. of Flood Forecasting Stations9

Statewise
Drainage Area (Km2)
Name of StateDrainage Area
Maharashtra69,425
Karnataka113,271
Andhra Pradesh76,252
Total Drainage
Area of Krishna
Basin (Km2)

DESCRIPTION
Hydrological Observation Stations Map
258,948


Hydropower Potential

Hydropower
Station
(Installed
capacity 50MW
and above)
Nagarjunsagar815
Srisailam770
Nagarjunsagar RC91
Nagarjunsagar CH61
Srisailam LB900

Tributaries with drainage area in sq. km.

Name of
the Tributary
Drainage area
(Km2)
Koyna4,890
Panchganga2,575
Dudhganga2,350
Ghataprabha8,829
Malaprabha11,549
Bhima70,614
Tungabhadra71,417
Dindl3,490
Peddavagu2,343
Halia3,780
Musi11,212

Geology of the Basin

The geology of the Krishna basin is dominated in the northwest by the Deccan Traps, in the central part by unclassified crystallines, and in the east by the Cuddapah Group. The Dharwars (southwest central) and the Vindhian (east central) form a significant part of the outcrops within the unclassified crystallines. Krishna delta is predominantly formed by Pleistocene to recent material.

Water Potential

  • Surface Water potential:78.1 km3
  • Ground Water potential:26.41 km3

Water Quality

Based on the systematic sampling of river water at many locations in the basin, its suitability for various purposes is determined by CPCB and as per the results, the quality is not as per the desired class and BOD remains the most critical parameter. At some places, DO and total coliform are also causing problem.

Problems in the Basin

The Krishna basin particularly in east coast faces periodically flood problems in the wake of cyclonic storms.

River System

Krishna river rises in the Western Ghats at an elevation of about 1337 m. just north of Mahabaleswar, about 64 km from the Arabian Sea and flows for about 1400 km and outfalls into the Bay of Bengal. The principal tributaries joining Krishna are the Ghataprabha, the Malaprabha, the Bhima, the Tungabhadra and the Musi.

Status of Surface Water Development

The pre-plan water resources development in the basin was mostly through a few diversion works such as Kurnool-Cuddapah Canal in Andhra Pradesh and Neera canal in Maharashtra. During the plan period many storage and diversion projects were taken up and completed. Important among them are Tungabhadra, Ghataprabha, Nagarijunasagar, Malaprabha, Bhima and Bhadra. As at the end of VIth plan, there were 15completed and 24 on-going major projects in the basin. Salient features of water resources development in the basin are given in Table 9.
Against the utilizable surface water potential of 58 cubic km, the present utilisation has been estimated to be about 47 cubic km. The ground water utilisation is about 20% of the utilizable potential.
The Lrosjma Water Dispute Tribunal has allocated the 75% dependable flow of 58.3 cubic km of Krishna Water among the basin States as under:
Andhra Pradesh22.6 cubic km
Maharashtra15.9
Karnataka19.8
Total58.3

By separate agreements each State has agreed to spare 0.14 cubic km of each of their share in Krishna waters to Tamil Nadu.

Hydropower Development

As per latest assessment, the hydroelectric power potential of the basin is 2997 MW at 60% load factor. Out of a total of 49 potential schemes with an installed capacity of 1947 MW are in operation. Another 11 schemes with an installed capacity of 703 MW are in various stages of construction. These together will account for 59% of the assessed potential. Thus, a considerable potential is awaiting development in this basin.

Urban Centres and Industries

The basin has rich mineral deposits and there is good potential for industrial development. Iron and steel, cement, vegetable oil extraction and rice milling are important industrial activities at present in the basin. Recently oil has been struck in this basin which is bound to have an effect on the future industrial scenario of this basin.

Hydrologic Network

Hydrological observation in the basin are carried out by the Central and State Governments. The Central Water Commission maintains 53 gauge-discharge sites in the basin. At 21 of these sites, sediment observations are also made and at 24 of the sites water quality is monitored. In addition, gauge-discharge data are available at 80 sites established by the State Governments concerned. The Central Water Commission maintains 6 flood forecasting stations in the basin.

Existing Organisation

Tunagabhadra is a major inter-States project in the basin. In order to operate the project and to regulate the flows among the beneficiary States of Karnataka and Andhara Pradesh, Tungabhadra Board has been set up under the Chairmanship of Chief Engineer, CWC with representative members from the States concerned.

Issues

Some parts of the basin, especially the Rayalaseema area of Andhra Pradesh, Bellary, Raichur, Dharwar, Chitradurga, Belgaum and Bijapur districts of Karnataka and Pune, Sholapur, Osmanabad and Ahmedanagar districts of Maharashtra are drought-prone. The delta area of the basin is subject to flooding. It has been observed that the river bed in delta area is continuously raised due to silt deposition resulting in reduction in carrying capacity of the channel. The coastal cyclonic rainfall of high intensity and short duration makes the flood problem worse.

Mythology

Krishna is a mighty east flowing river of peninsular India. It is the same river as Krsnavena in the Puranas or Krsnaveni in the Yoginitantra. It is also known as Kanhapenna in Jatakas and Kanhapena in the Hathigumpha inscription of Kharavela. The word Krishna also indicates dark color


GODAVERI BASIN

GODAVARI BASIN DETAILS

Godavari Basin extends over an area of 312,812 km2, which is nearly 9.5% of the total geographical area of the country.  The basin lies in the states of
Maharashtra                             1,52,199 km2               48.65 %
Andhra Pradesh                        73,201 km2                  23.40 %
Chattisgarh                               39,087 km2                  12.49 %
Madhya Pradesh                       26,168 km2                   8.63 %
Orissa                                       17,752 km2 and            5.67 %
Karnataka                                 4,405 km2                     1.41 %
The Godavari, Perennial River of India is the Second largest river in India.   It flows in the southern India and is considered to be one of the seven sacred rivers.   The Godavari, throughout its entire length, is sacred to the Hindus. 
Godavari River rises near Trayambak near Nasik, northeast of Mumbai in the state of Maharashtra at an elevation of 1067 m and flows for a length of about 1465 km (910 miles) before out falling into the Bay of Bengal.  It flows for 692-Kms before entering Andhra Pradesh at Basara in Adilabad district.  It flows through the Eastern Ghats and emerges out at Polavaram into the plains.  At Dhawaleswaram the river divides into two branches, the Gautami and Vasishta.  Between the two lies the Godavari Central Delta.  The two arms split into branches as they approach the sea dividing the Central Delta into a number of islands.  These branches are said to have been made by seven great 'Rishis' after whom they are named.  Godavari is known as the "Ganga of the South".  Asia's largest Lift irrigation project named "Vishnupuri Prakalp" is constructed on the river just 5-km away from Nanded city. 
The Godavari basin is bounded on the North by the Satmala Hills, the Ajanta Range and the Mahadeo Hills, on the South and East by the Eastern Ghats and on the West by the Western Ghats. It is roughly triangular in shape and the main river itself runs practically along the base of the triangle.

Basin characteristics


The Godavari basin receives major part of its rainfall during the Southwest monsoon period. The other rainy seasons are not so well defined and well spread as the South-West monsoon season. They contribute about 16% of the total annual rainfall in the Godavari basin. The annual rainfall of Godavari basin varies from 3000 mm to 600 mm.  The Godavari basin has a tropical climate. The mean annual surface temperature in the Western Ghat area is about 24oC, and it increases gradually towards the east and attains a maximum of 29.4oC on the East Coast. During January the mean daily minimum temperature increases from West to East from 15oC on the Western Ghats to about 18oC on the East Coast. The mean maximum daily temperature generally exceeds 30oC in the western part of the Godavari basin and it is only slightly less than 30oC in the Eastern part. 

The population of the basin, based on 2001 census was 60.57 million out of which about 75% live in rural and remaining 25% in urban areas. The density of population is around 194 persons per km2. Nearly 40% of work force is engaged in cultivation, 30% as agriculture labour and balance 30% in mining, manufacturing etc.

Except for the hills forming the watershed around the basin, the entire drainage basin of the river Godavari comprises of undulating country, a series of ridges and valleys interspersed with low hill ranges. Large flat areas which are characteristic of the Indo-Gangetic plains are scarce except in the delta. The Sahyadri ranges of Western Ghats form the Western edge of the basin. The interior of the basin is a plateau divided into a series of valleys sloping generally towards East. The Eastern Ghats, which form the Eastern boundary, are not so well defined as the Sahyadri range on the West. The Northern boundary of the basin comprises of tablelands with varying elevation. Large stretches of plains interspersed by hill ranges lie to the South.

Godavari River Basin Irrigation Projects

Godavari River Delta
The Godavari River has its catchment area in six states of IndiaMaharashtraChhattisgarhMadhya PradeshAndhra PradeshKarnataka and Odisha. The number of dams constructed in Godavari basin is the highest among all the river basins in India. Nearly 350 major / medium dams and barrages are constructed in the river basin by the year 2012.

BRAHMPUTRA BASIN

Geography

The Brahmaputra River Basin consists of the Ganges and Brahmaputra, which originates in Tibet and the Barak River starting in India.  These rivers all converge in Bangladesh as the Meghna River and flow out to the Bay of Bengal.  The river basin is a wide land area made up of parts of India, Tibet, Bhutan, Nepal, and Bangladesh.
The Brahmaputra River flows for 1,800 miles through Tibet, India, and Bangladesh.  Starting in the Himalayas in Tibet as the Tsangpo River, the river flows eastward for 704 miles.  At the Shuomatan Point, the river bends and enters India crossing the Assam Valley.  It then flows south through Bangladesh exiting at the Ganges-Brahmaputra Delta into the Bay of Bengal.
The river drains the Himalaya east of the Indo-Nepal border, southern-central portion of the Tibetan plateau above theGanges basin, south-eastern portion of Tibet, the Patkai-Bum hills, the northern slopes of the Meghalaya hills, the Assam plains and the northern portion of Bangladesh. The basin, especially south of Tibet is characterized by high levels of rainfall.Kangchenjunga (8,586m) is the only peak above 8,000m and the highest point within the Brahmaputra basin.
The Brahmaputra's upper course was long unknown, and its identity with the Yarlung Tsangpo was only established by exploration in 1884–86. This river is often called Tsangpo-Brahmaputra river.
The lower reaches are sacred to Hindus. While most rivers on the Indian subcontinent have female names, this river has a rare male name, as it means "son of Brahma" in Sanskrit (putra means "son").

             BHARAMPUTRA BASIN                                
Brief Description
The source of this river lies in the Kanglung Kang Glacier near the Kailash range of Himalayas located in the south-western part of the Tibetan plateau at an elevation of 5,300m (82°10° E and 30°30’ N) near Konggyu Tso Lake. Here the river is calledTamchok Khambab Kangri. Many snowfed streams join the river from the passes at about 60 km southeast of MansarovarLake. The Brahmaputra River traverses a distance of 2,880 km through three countries, namely, ChinaIndia, and Bangladesh, before joining the Bay of Bengal. It has a catchment area of 580,000 sq. km, an average annual discharge of 19,820 cumec, an average annual sediment load of 735 million metric tonnes, and a specific flood discharge of 0.149 cumec/ sq. km.

The catchment area of the river falls in four countries. Although the main river does not flow through the Kingdom of Bhutan, 96% of Bhutan’s area falls under this basin. The basin is of irregular shape: the maximum east-west length is 1,540 km and the maximum north-south width is 682 km. The basin lies between 23°N to 32°_N latitude and 82°E to 97°50’ E longitude. The part of the Tibetan plateau falling under the basin has an elevation varying from 3,000 to 5,000m and is dotted with numerous glaciers.

The Brahmaputra valley is long and narrow; it is 640 km long and the width varies from 64 km to 90 km. The valley is bounded in the north by high Himalayan mountain ranges, in the east by the Patkai hill ranges, in the south by the lower (Assam) hill ranges and in the west, it is contiguous with the plains of Bangladesh.

The southern (Assam) mountainous region under the basin is comprised of parts of Naga hillsMikir hills, North Cachar hills,Khasi hills and Garo hills lying in continuity in the east-west direction from Patkai hill ranges up to the Bangladesh border.

In India, the Brahmaputra basin covers parts of six states: Arunachal PradeshAssamNagalandMeghalaya and West Bengaland the whole of Sikkim.

The culturable area of the basin is 12.15 M-ha which is 6.2% of the culturable area of the country.
Stream Network
The numbers represents average flow in cumec.
Drainage Area of the BasinName of StateDrainage area (in Km2)
Arunachal Pradesh81,600
Assam70,700
Meghalaya11,800
Nagaland10,900
Sikkim7,300
West Bengal12,700
Total Drainage Area of the Basin (in Km2)195,000
Topography
The Brahmaputra basin covers 6 topographic regions falling in 4 countries.
Nature of Topography
Area under  Topography (sq. km)
Geographical Location
High Tibetan Plateau
293,000
Southern Part of the Tibet province of China.
High Himalayan mountains
137,050

Part of Himalayan kingdom of Bhutan and of 3 states ofIndiaArunachal Pradesh, West Bengal and Sikkim.
Brahmaputra Valley
56,200
Part of Assam State of India.
Lower (Assam) Mountainous Region
37,200
Part of 3 states of IndiaNagalandAssam and Meghalaya.
Plains
56,550
Part of the 2 plains districts of West Bengal (India) and part of Bangladesh.
Coastal Region
Negligible
Coastal region of Bangladesh.
Water potential
Surface Water potential (Km3)
537.2
Ground Water potential (Km3)
27.9
Total Water potential in the basin (Km3)
565.1
Hydropower Potential
Sub-basin wise estimated hydro potential of Brahmaputra basin
Basin/Rivers
No. of schemes identified
Potential at 60% load factor  (MW)
Dihang-Dibang
28
13,615
Lohit
11
4,152
Subansiri
25
6,893
Upper Brahmaputra
19
789
Kameng
34
1,982
Kalang (Kopili)
16
510
Teesta
30
3,021
Lower Brahmaputra
03
50
Barak and neighboring rivers
60
3,908
Total
226
34,920
Water Utilization
Surface Water Utilization
Drinking purposes
Irrigation purposes
Ground Water Utilization
Drinking purposes
Irrigation purposes
Tributaries with drainage area in sq. km.
Name of the Tributary
Drainage area (Km2)
Jiadhol
77.3
Subansiri
4.3
Ranganadi
23.8
Borgong
36.4
Jia-Bharali
28.1
Gabharu
80.7
Belsiri
75.4
Dhansiri (N)
65.2
Noa-nadi
81.4
Nonoi
76.2
Barnadi
82.8
Puthimari
66.6
Pagladiya
75.8
Manas
14.1
Champamati
86.8
Gaurang
81.5
Tipkai
90.2
Sankosh
7.6
DoyangKopiliKhandongLoktakRammam IIRanganadiRangit IIITeesta Canal Power House I, II, III, Teesta Low Dam Stage – III Hydroelectric ProjectTeesta Low Dam Stage - IV Hydroelectric Project, Umiam IIIUmiam IV (Nongkhylle),Dhansiri + LBP, Karbi Langpi (Lower Borpani)Kopili Stage II, Likim- RoLoktak Downstream, RanganadiTeesta Stage V,TuirialTuiriniTuivallUmiamUmtru St-V, Dhansiri + LBP, Karbi Langpi (Lower Borpani), Kopili Stage II, Likim- Ro,Loktak Downstream, Ranganadi, Teesta Stage V, TuirialTuiriniTuivall
Water Quality of Basin
The major ion chemistry of the Brahmaputra is characterized by high bi-carbonate content and source rock influence. While higher values of TSM than TDS during monsoon indicate predominance of physical weathering over chemical weathering, chemical weathering is relatively more pronounced during the dry season. On average, 60% of the bicarbonates in theBrahmaputra water come from silicate weathering and the rest from the carbonates.

Surface suspended sediments range from fine sand to clay, the size fraction greater than 12 mm constituting an important size population. Surface suspended sediments are moderately to poorly sorted with greater amounts of finer material in the distribution, particularly during the rainy season. The detrital contribution in the form of Quartz, Feldspar and Mica make up more than 80% of the mineralogy. Chlorite, Illite, and Kaolinite constitute about 95% of the clay minerals.

Sediment chemistry does not reveal any marked spatial or temporal variation. However, spatial variation in the metal/aluminum ratio in some cases has been observed. This may be attributed to continuous addition of freshly eroded materials by a large number of tributaries at different points of the main stem. Since there is hardly any major industry in the catchment area and the amounts of sediment carried by the tributaries are enormous, there is not enough ground to link any occasional rise in metal concentration to any point source.

The major sources of carbon in the Brahmaputra basin are deforestation and fossil fuel consumption. In the case of nitrogen, precipitation, soil erosion, drainage and fertilizer application constitute the main sources. Phosphorous carried by the suspended load makes up a substantial part of the P loading in the Brahmaputra. A comparison of different forms of P between suspended and bed sediments indicates a decrease in organic-P, Fe-P and total-P after deposition. Since much of the suspended sediment-transported P is not available biologically, land management practices to minimize sediment input to the river should produce no significant reduction in the biological availability of P. The total flux of P from the Brahmaputra (150 - 270 1010 gm P/year) constitutes nearly 5% of the global flux and is about three times greater than that carried in dissolved form. Considering the mobilization of P by fertilizer use, it is reasonable to assume that the P concentrations will further increase.

Suspended sediments play a significant role on the overall solute and sediment biogeochemistry of the river. The biogeochemistry of Ganga and Brahmaputra is markedly different with respect to HCO3, SO4Cl, SiO2, Ca and a few heavy metals, such as Cu, Fe, and Zn. It may be possible that apart from the natural factors, such as geology, topography, vegetation, and precipitation, this is also owing to the difference in the intensity of utilization of the two rivers and anthropogenic impacts on their watersheds which may be different, having a direct reflection on their geochemical behaviour.
Mythology
Brahmaputra River originates from the Mansarovar near Kailash range and is also known as Mahanad. Worth noting is the fact that the Brahmaputra River has a male name whereas all other majors rivers of India have female names. According to legends, Brahmaputra is the son of Lord Brahma. It is said that Shantanu, a famous ancient sage began a long meditation in an ashram in this area along with his beautiful wife AmodhaAmodha was so beautiful that Lord Brahma himself became enchanted by the beauty of Amodha and requested her to make love with him. But Amodha did not accept the Brahma’s proposal. However, by that time Lord Brahma had become so excited that his semen discharged at that place. When Shantanucame to know about this, he inseminated the Brahma’s semen in the womb of Amodha. Subsequently, Amodha gave birth to a son and he was called Brahmaputra. The tank near the ashram of sage Shantanu is known as the Brahmkund. Another legend is that because Brahmaputra is the largest river in India, it carries a male name.