Pandoh Dam | |
---|---|
Country | India |
Location | Mandi district |
Coordinates | 31°40′17″N77°04′01″E / 31.67139°N 77.06694°E |
Status | Operational |
Opening date | 1977 |
Owner(s) | Beas Construction Board |
Dam and spillways | |
Type of dam | Embankment |
Impounds | Beas River |
Height | 76 m (249 ft) |
Length | 255 m (837 ft) |
Dam volume | 1,580,000 m3 (2,066,562 cu yd) |
Spillway capacity | 9,939 m3/s (350,992 cu ft/s) |
Reservoir | |
Creates | Pandoh Lake |
Total capacity | 41,000,000 m3 (33,239 acre⋅ft) |
Surface area | 1.7 km2 (1 sq mi) [1] |
Dehar Power Plant | |
Coordinates | 31°24′37″N76°51′43″E / 31.41018°N 76.86205°E |
Commission date | 1977 |
Hydraulic head | 335 m (1,099 ft) |
Turbines | 6 x 165 MW (221,000 hp) Francis-type |
Installed capacity | 990 MW (1,330,000 hp) |
The Pandoh Dam is an embankment dam on the Beas River in Mandi district of Himachal Pradesh, India. Under the Beas Project, the dam was completed in 1977 and its primary purpose is hydroelectric power generation. Part of a run-of-the-river power scheme, it diverts the waters of the Beas to the southwest through a 38 km (24 mi) long system of tunnels and channels. The water is used for power generation at the Dehar Power House before being discharged into the Sutlej River, connecting both rivers. The power house has an installed capacity of 990 MW. [2] The system diverts 256 cumecs (9000 cusecs) of Beas waters to the Satluj River. The project was completed in 1977. [3]
The two major rivers Beas and Satlej flow out of the himalayas and reach a point where they are separated by a crow fly distance of approximately 36 km and have an elevation difference of approximately 1099 ft. The waters of Beas flow from melting ice throughout the year. This was realized and a plan made to exploit the potential of this river system. The power potential was estimated as 1,000 MW. The plans originally called Beas Project Unit - I Beas Satluj Link Project went through several revisions for diverting the waters of Beas river. The first plan prepared by Punjab Irrigation Department in 1957. [3] The 1957 plan contemplated a diversion dam at Pandoh, 11.26-kilometre (7.00 mi) tunnel, 19.31-kilometre (12.00 mi) open channel, 4.82-kilometre (3.00 mi) tunnel. The 1957 report was followed by a 1960 report and the final proposal in 1961. The final proposal included 76.25-metre (250.2 ft) diversion dam at Pandoh, a 7.62-metre (25.0 ft) dia, 13.11-kilometre (8.15 mi) Pandoh baggi tunnel, 11.8-kilometre (7.3 mi) Sunder Nagar hydel channel, 8.53-metre (28.0 ft) dia, 12.35-kilometre (7.67 mi) Sundernagar Satluj tunnel, 22.86-metre (75.0 ft) dia 125-metre (410 ft) high surge shaft, three Dehar penstocks split to six penstocks and Dehar power plant with 6 x 165 MW generators. The system would divert 9,000 cubic feet per second (250 m3/s) of the Beas to the Satluj. An added benefit of the project was the increased inflow to Gobind Sagar thereby increasing power generation capacity at Bhakra Dam and added irrigation waters for the states of Punjab and Haryana. The project was approved in 1963 and commissioned in 1977. [3]
The seven components of the Dehar hydroelectric Project for diversion of 9000 cusecs of water and power generation as shown on the figures are: [3]
The 76 m (249 ft) tall Pandoh Dam is an embankment dam on the Beas River. The dam was commissioned in 1977 and its primary purpose is hydroelectric power generation. Part of a run-of-the-river power scheme, it diverts the waters of the Beas to the southwest through a 38 km (24 mi) long system of tunnels and channels. The water is used for power generation at the Dehar Power House before being discharged into the Satluj River, connecting both rivers. [2]
Pandoh Lake is created by Pandoh Dam and is located about 19 kilometres (12 mi) upstream from Mandi on the River Beas.
Water diverted by the Pandoh Dam is first sent through the 7.62 m diameter, 13.1 km (8 mi) long Pandoh-Baggi tunnel which terminates at the beginning of a 11.8 km (7 mi) long channel. [4] At the end of the channel, the water is stored at the Sundar Nagar Balancing Reservoir at 31°32′05″N76°53′11″E / 31.53472°N 76.88639°E . The reservoir has a live capacity of 3,700,000 m3 (3,000 acre⋅ft). From the balancing reservoir, water is again sent south through the 8.53 m dia, 12.38 km (8 mi) long Sundar Nagar Slapper tunnel. The tunnel ends just before the Dehar Power Plant at 31°24′47″N76°52′06″E / 31.41306°N 76.86833°E . It splits into three 4.877 m dia followed by six 3.353 m dia penstocks before reaching the power house. The 22.86 m dia 125 m tall surge shaft at the end of the tunnel is designed to take any backflow due to sudden shutdown of the power plant and avoid tunnel rupture due to water hammer.
The Dehar Power Plant is situated on the banks of the Satluj at the Slapper bridge. Water from penstocks is fed into a six 165 MW Francis turbine-generator and then discharged in the Satluj. The power house has an installed capacity of 990 megawatts (1,330,000 hp). [2] The change in elevation affords a hydraulic head of 335 m (1,099 ft). [5] [6]
It is managed by the Bhakra Beas Management Board (BBMB), [7] which is engaged in regulation of the supply of water and power from Bhakra Nangal Dam and Beas Projects to the states of Punjab, Haryana, Rajasthan, Himachal Pradesh and Delhi.
Diverted waters from Beas also increased the generation capacity of the Bhakra Dam downstream of Dehar Power Plant. [3]
Turbine | Vertical shaft Francis turbine |
Total no. of units | 6 |
Capacity of each unit | 165 MW |
Total installed capacity | 990 MW |
Speed | 300rpm |
maximum head | 341.4m |
minimum head | 254.6m |
No of pen-stock headers | 3 |
No of penstock branches | 6 |
The Pandoh dam diverts 256 cumecs (9000 cusecs) of Beas to river Satluj. [8] Diversion of the Beas water has done considerable damage to the towns downstream on Beas river and left a trail of misery to Mandi. In winter the river bed almost dries and leaves a deserted look. [9] [10]
The Beas River is a river in north India. The river rises in the Himalayas in central Himachal Pradesh, India, and flows for some 470 kilometres (290 mi) to the Sutlej River in the Indian state of Punjab. Its total length is 470 kilometres (290 mi) and its drainage basin is 20,303 square kilometres (7,839 sq mi) large.
Kárahnjúkar Hydropower Plant, officially called Fljótsdalur Power Station is a hydroelectric power plant in Fljótsdalshérað municipality in eastern Iceland, designed to produce 4,600 gigawatt-hours (17,000 TJ) annually for Alcoa's Fjarðaál aluminum smelter 75 kilometres (47 mi) to the east in Reyðarfjörður. With the installed capacity of 690 megawatts (930,000 hp), the plant is the largest power plant in Iceland. The project, named after the nearby Kárahnjúkar mountains, involves damming the rivers Jökulsá á Dal and Jökulsá í Fljótsdal with five dams, creating three reservoirs. Water from the reservoirs is diverted through 73 kilometres (45 mi) of underground water tunnels and down a 420-metre (1,380 ft) vertical penstock towards a single underground power station. The smelter became fully operational in 2008 and the hydropower project was completed in 2009.
The Chenab River is a major river that flows in India and Pakistan, and is one of the 5 major rivers of the Punjab region. It is formed by the union of two headwaters, Chandra and Bhaga, which rise in the upper Himalayas in the Lahaul region of Himachal Pradesh, India. The Chenab flows through the Jammu region of Jammu and Kashmir, India, into the plains of Punjab, Pakistan, before ultimately flowing into the Indus River. The Battle of Chenab was fought between Sikhs and Afghans on the bank of the river.
The Sutlej River is the longest of the five rivers that flow through the historic crossroads region of Punjab in northern India and Pakistan. The Sutlej River is also known as Satadru. It is the easternmost tributary of the Indus River. The Bhakra Dam is built around the river Sutlej to provide irrigation and other facilities to the states of Punjab, Rajasthan and Haryana.
Bilaspur is a town and a municipal council in Bilaspur district in the Indian state of Himachal Pradesh.
Bhakra Nangal Dam is a concrete gravity dam on the Satluj River in Bhakra Village in Bilaspur district, Himachal Pradesh in northern India. The dam forms the Gobind Sagar reservoir. Nangal Dam is another dam at Nangal in Punjab downstream of Bhakra Dam. However, sometimes both the dams together are called Bhakra-Nangal Dam though they are two separate dams.
Maharana Pratap Sagar, also known as Pong Reservoir or Pong Dam Lake is a large reservoir in Fatehpur, Jawali and Dehra tehsil of Kangra district of the state of Himachal Pradesh in India. It was created in 1975, by building the highest earthfill dam in India on the Beas River in the wetland zone of the Siwalik Hills. Named in the honour of Maharana Pratap (1540–1597), the reservoir or the lake is a well-known wildlife sanctuary and one of the 49 international wetland sites declared in India by the Ramsar Convention. The reservoir covers an area of 24,529 hectares, and the wetlands portion is 15,662 hectares.
The Rana Pratap Sagar Dam is a gravity masonry dam of 53.8 metres (177 ft) height built on the Chambal River at Rawatbhata in Rajasthan in India. It is part of integrated scheme of a cascade development of the river involving four projects starting with the Gandhi Sagar Dam in the upstream reach in Madhya Pradesh and the Jawahar Sagar Dam on the downstream with a terminal structure of the Kota Barrage in Rajasthan for irrigation.
The Indian state Himachal Pradesh has a large number hydroelectricity resources, about twenty five percent of the national potential. About 27,436 MW of hydroelectric power can be generated in the state by the construction of various hydroelectric projects on the five perennial river basins. Out of total hydroelectric potential of the state, 10,519 MW is harnessed so far, out of which 7.6% is under the control of Himachal Pradesh Government while the rest is exploited by the Central Government. The state government has been giving the highest priority for its development, since hydroelectric generation can meet the growing need of power for industry, agriculture and rural electrification. It is also the biggest source of income to the state as it provides electricity to other states.
Himachal Pradesh provides water to both the Indus and Ganges basins. The drainage systems of the region are the Chenab, the Ravi, the Beas, the Satluj and the Yamuna. These rivers are perennial and are fed by snow and rainfall. They are protected by an extensive cover of natural vegetation.
Shanan Power House is situated 2 km from Jogindernagar in Himachal Pradesh, India. It is the first hydroelectric power project of India in megawatt capacity. British Engineer Colonel B.C. Batty and his team in collaboration with the then ruler of Joginder Nagar region, Raja Karan Sen, designed and created it. The Shanan Power house is currently under the control of Punjab State Electricity Board and whole of the revenue goes to Punjab government. It is to be handed over to the Himachal Pradesh Government in 2024 after the completion of a 99-year lease.
The Tongariro Power Scheme is a 360 MW hydroelectricity scheme in the central North Island of New Zealand. The scheme diverts water from tributaries of the Rangitikei, Whangaehu, Whanganui, and Tongariro rivers. These rivers drain a 2,600-square-kilometre (1,000 sq mi) area including Ruapehu, Ngauruhoe, Tongariro and the western Kaimanawa Ranges. The water diverted from these rivers is sent through canals and tunnels to generate electricity at three hydro power stations, Rangipo (120 MW), Tokaanu (240 MW) and Mangaio (2 MW). The water is then discharged into Lake Taupō where it adds to the water storage in the lake and enables additional electricity generation in the succession of power stations down the Waikato River.
The Upper Kotmale Dam is located in Talawakele, within the Nuwara Eliya District, in the Central Province of Sri Lanka. The dam feeds the third largest hydroelectric power station in the country.
Idamalayar Dam is a multipurpose concrete gravity dam located at Ennakkal between Ayyampuzha and Bhoothathankettu in Ernakulam district of Kerala on the Idamalayar, a tributary of the Periyar River in Kerala, South India. The dam however extends east as far as Malakkappara. Completed in 1985, with a length of 373 metres (1,224 ft) and a height of 102.8 metres (337 ft), the dam created a multipurpose reservoir covering 28.3 km2 (10.9 sq mi) in the scenic hills of the Anamalais.
The Simplício Hydroelectric Complex is located on the Paraíba do Sul river on the border of Rio de Janeiro and Minas Gerais states in Brazil. Supported by the Anta Dam, it transfers water through a 26 kilometres (16 mi) circuit to a downstream power plant. After years of delay and a cost of US$2 billion, the power complex became operational in June 2013.
The Maneri Dam is a concrete gravity dam on the Bhagirathi River located at Maneri, 8.5 kilometres (5.3 mi) east of Uttarkashi in Uttarkashi district, Uttarakhand, India. The primary purpose of the dam is to divert water into a tunnel which feeds the 90 megawatts (120,000 hp) run-of-the-river Tiloth Power Plant.
The Koldam Hydropower Station, commonly known as Koldam, is an embankment dam on the Sutlej River upstream of the Dehar Power House. It is 18 km from Bilaspur off the Chandigarh-Manali Highway (NH-21) near Barmana, Himachal Pradesh, India. The main purpose of the dam is hydroelectric power generation and it will support an 800 MW power station. The dam was constructed by NTPC Limited.
The Pong Dam, also known as the Beas Dam, is an earth-fill embankment dam on the Beas River in the state of Himachal Pradesh, India, just upstream of Talwara. The purpose of the dam is water storage for irrigation and hydroelectric power generation. As the second phase of the Beas Project, construction on the dam began in 1961 and was completed in 1974. At the time of its completion, the Pong Dam was the tallest of its type in India. The lake created by the dam, Maharana Pratap Sagar, became a renowned bird sanctuary.
The Neelum–Jhelum Hydropower Plant is part of a run-of-the-river hydroelectric power project in Azad Kashmir (AJK) designed to divert water from the Neelum River to a power station on the Jhelum River. The power station is located 42 km (26 mi) south of Muzaffarabad, and has an installed capacity of 969 MW. Construction on the project began in 2008 after a Chinese consortium was awarded the construction contract in July 2007. After many years of delays, the first generator was commissioned in April 2018 and the entire project was completed in August 2018 when the fourth and last unit was synchronized with the national grid on 13 August and attained its maximum generation capacity of 969 MW on 14 August 2018. It will generate 5,150 GWh per year at the levelised tariff of Rs 13.50 per unit for 30 years.
Jahu is a village panchayat in Bhoranj tehsil, of the Hamirpur district, Himachal Pradesh, India. Jahu is on a trijunction of Hamirpur, Bilaspur and Mandi districts.