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Removed empty portal template using script

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	==See also==		==See also==
	{{stack\|~~{{Portal\|Water\|Renewable energy}}~~}}		{{stack\|}}
	*[[Pong Dam]] – located {{Convert\|140\|km\|mi\|0\|abbr=on}} downstream, the second phase of the Beas Project		*[[Pong Dam]] – located {{Convert\|140\|km\|mi\|0\|abbr=on}} downstream, the second phase of the Beas Project
	*[[Bhakra Dam]] – downstream of Dehar Power Station		*[[Bhakra Dam]] – downstream of Dehar Power Station

imported>BrownHairedGirl: removed Category:1977 establishments in India; added Category:1977 establishments in Himachal Pradesh using HotCat

2021-03-17T01:34:01Z

removed Category:1977 establishments in India; added Category:1977 establishments in Himachal Pradesh using HotCat

New page

{{Use dmy dates|date=February 2017}}
{{Use Indian English|date=February 2017}}
{{Infobox dam
| name = Pandoh Dam
| name_official =
| image = View of Spillway of Pando Dam.JPG
| image_size =
| image_caption =
| image_alt =
| location_map = India
| location_map_size =
| location_map_caption =
| coordinates = {{coord|31|40|17|N|77|04|01|E|type:landmark|display=inline,title}}
| country = India
| location = [[Mandi district]]
| status = O
| construction_began =
| opening = 1977
| demolished =
| cost =
| owner = Beas Construction Board
| dam_type = Embankment
| dam_height = {{Convert|76|m|ft|0|abbr=on}}
| dam_height_thalweg =
| dam_height_foundation=
| dam_length = {{Convert|255|m|ft|0|abbr=on}}
| dam_width_crest =
| dam_width_base =
| dam_volume = {{Convert|1580000|m3|cuyd|0|abbr=on}}
| dam_elevation_crest =
| dam_crosses = [[Beas River]]
| spillway_count =
| spillway_type =
| spillway_capacity = {{Convert|9939|m3/s|ft3/s|0|abbr=on}}
| res_name = [[Pandoh Lake]]
| res_capacity_total = {{Convert|41000000|m3|acre feet|0|abbr=on}}
| res_capacity_active =
| res_capacity_inactive=
| res_catchment =
| res_surface = {{Convert|1.7|km2|mi2|0|abbr=on}}<ref>{{cite web|title=India: National Register of Large Dams 2009|url=http://www.cwc.nic.in/main/downloads/National%20Register%20of%20Large%20Dams%202009.pdf|publisher=Central Water Commission|accessdate=22 November 2011|archive-url=https://web.archive.org/web/20180219204531/http://www.cwc.nic.in/main/downloads/National%20Register%20of%20Large%20Dams%202009.pdf|archive-date=19 February 2018|url-status=dead}}</ref>
| res_elevation =
| res_max_depth =
| res_max_length =
| res_max_width =
| plant_name = Dehar Power Plant
| plant_coordinates = {{coord|31.41018|N|76.86205|E|type:landmark}}
| plant_hydraulic_head = {{Convert|335|m|ft|0|abbr=on}}
| res_tidal_range =
| plant_operator =
| plant_commission =1977
| plant_decommission =
| plant_type =
| plant_turbines = 6 x {{convert|165|MW|abbr=on}} [[Francis-type]]
| plant_capacity = {{convert|990|MW|abbr=on}}
| plant_annual_gen =
| website =
| extra =
}}
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 {{Convert|38|km|mi|0|abbr=on}} 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.<ref name=powersite>{{cite web|title=Dehar Power House|url=http://bbmb.gov.in/english/menu2.asp|publisher=Bhakra Beas Management Board|accessdate=25 November 2011}}</ref> The system diverts 256 [[Cubic metre per second|cumecs]] (9000 cusecs) of Beas waters to the Satluj River. The project was completed in 1977.<ref name=":0">{{cite web|url=http://bbmb.gov.in/english/history_bsl_development.asp|title=BBMB - Developmental History of Beas Project|publisher=Bhakra Beas Management Board|accessdate=3 January 2016}}</ref>

== History ==
The two major rivers [[Beas River|Beas]] and [[Sutlej|Satluj]] 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 are continuous flow from ice-melt and flow 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.<ref name=":0" /> The 1957 plan contemplated a diversion dam at Pandoh, {{convert|11.26|km|adj=on}} tunnel, {{convert|19.31|km|adj=on}} open channel, {{convert|4.82|km|adj=on}} tunnel. The 1957 report was followed by a 1960 report and the final proposal in 1961. The final proposal included {{convert|76.25|m|adj=on}} diversion dam at Pandoh, a {{convert|7.62|m|adj=on}} dia, {{convert|13.11|km|adj=on}} Pandoh baggi tunnel, {{convert|11.8|km|adj=on}} Sunder Nagar hydel channel, {{convert|8.53|m|adj=on}} dia, {{convert|12.35|km|adj=on}} Sundernagar Satluj tunnel, {{convert|22.86|m|adj=on}} dia {{convert|125|m|adj=on}} high surge shaft, three Dehar penstocks split to six penstocks and Dehar power plant with 6 x 165 MW generators. The system would divert {{convert|9000|cuft/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.<ref name=":0" />

== Components ==
[[File:Dehar power plant.jpg|thumb|left]]
[[File:BSL plan view.jpg|alt=Plan view of the project|thumb|Plan View showing Beas and Satluj rivers; Pandoh dam, tunnels, hydel channel and power house]]
The seven components of the Dehar hydroelectric Project for diversion of 9000 cusecs of water and power generation as shown on the figures are:<ref name=":0" />
# Pandoh dam - 76.25 m (250 ft) earthen dam
# Pandoh Baggi Tunnel - 7.62 m dia, 13.11 km long
# Sundernagar Hydel Channel - 11.8 km long open channel
# Sundarnagar Dehar Tunnel - 8.53 m dia, 12.53 km long
# Surge Shaft - 22.86 m dia x 125 m high
# Penstocks - Three 4.877 m split to six 3.353 m
# Dehar Power House - 6 × 165 MW

==Pandoh Dam==
[[File:Floodgates - Pandoh Dam across River Beas - Chandigarh-Manali Highway - NH-21 - Mandi 2014-05-09 2151.JPG|thumb|View of Pandoh Dam from NH-21]]
The {{Convert|76|m|ft|0|abbr=on}} 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 {{Convert|38|km|mi|0|abbr=on}} 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|Satluj River]], connecting both rivers.<ref name="powersite"/>

== Pandoh Lake ==
[[File:Pandoh Lake.jpg|thumb|View of Pandoh Lake from Chandigarh-Manali NH-21]]
Pandoh Lake is created by Pandoh Dam and is located about {{convert|19|km}} upstream from Mandi on the River [[Beas River|Beas]].

== Operation ==
Water diverted by the Pandoh Dam is first sent through the 7.62 m diameter, {{Convert|13.1|km|mi|0|abbr=on}} long Pandoh-Baggi tunnel which terminates at the beginning of a {{Convert|11.8|km|mi|0|abbr=on}} long channel.<ref>{{cite web |url=http://www.cwc.gov.in/main/webpages/other%20projects.html |title=Information on some major projects |access-date=17 May 2012 |archive-url=https://web.archive.org/web/20130331020501/http://www.cwc.gov.in/main/webpages/other%20projects.html |archive-date=31 March 2013 |url-status=dead }}</ref> At the end of the channel, the water is stored at the Sundar Nagar Balancing Reservoir at {{Coord|31|32|05|N|76|53|11|E|name=Sundar Nagar Balancing Reservoir}}. The reservoir has a live capacity of {{Convert|3700000|m3|acre feet|0|abbr=on}}. From the balancing reservoir, water is again sent south through the 8.53 m dia, {{Convert|12.38|km|mi|0|abbr=on}} long Sundar Nagar Slapper tunnel. The tunnel ends just before the [[Dehar Power Plant]] at {{Coord|31|24|47|N|76|52|06|E|name=Dehar Power House}}. It splits into three 4.877 m dia followed by six 3.353 m dia [[penstock]]s 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 backfow due to sudden shutdown of the power plant and avoid tunnel rupture due to [[water hammer]].

==Dehar Power Plant==
The Dehar Power Plant is situated on the banks of the [[Sutlej|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 {{convert|990|MW}}.<ref name="powersite" /> The change in elevation affords a [[hydraulic head]] of {{Convert|335|m|ft|0|abbr=on}}.<ref>{{cite book|last=Jain|first=Sharad K.|title=Hydrology and water resources of India|year=2007|publisher=Springer|location=Dordrecht|isbn=978-1-4020-5179-1|pages=493|url=https://books.google.com/books?id=ZKs1gBhJSWIC&q=Dehar+Power+House&pg=PA493|author2=Agarwal, Pushpendra K. |author3=Singh, Vijay P. }}</ref><ref>{{cite web|title=Developmental History of Beas Project|url=http://bhakra.nic.in/english/history_bsl_development.asp|publisher=BBMB|accessdate=27 November 2011|url-status=dead|archiveurl=https://web.archive.org/web/20120426005156/http://bhakra.nic.in/english/history_bsl_development.asp|archivedate=26 April 2012|df=dmy-all}}</ref>

It is managed by the Bhakra Beas Management Board (BBMB),<ref>{{cite web|title=Bhakra Beas Management Board|url=http://bbmb.gov.in/english/menu2.asp|accessdate=8 February 2014}}</ref> which is engaged in regulation of the supply of water and power from [[Bhakra Nangal Dam]] and Beas Projects to the states of [[Punjab, India|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.<ref name=":0" />

{| class="wikitable"
|+ Salient features
| 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
|}

== Ecology ==
The Pandoh dam diverts 256 cumecs (9000 cusecs) of Beas to river Satluj.<ref>{{Cite book|title = Silting Problems in Hydropower Plants|url = https://books.google.com/books?id=iKXDcAAUP5wC|publisher = CRC Press|date = 2002-01-01|isbn = 9789058092380|first1 = S. P.|last1 = Kaushish|first2 = B. S. K.|last2 = Naidu}}</ref> Diversion of the Beas water has done considerable damage to the towns downstream on Beas river and left a trail of misery to [[Mandi, Himachal Pradesh|Mandi]]. In winter the river bed almost dries and leaves a deserted look.<ref>{{Cite web|title = The Tribune, Chandigarh, India - Himachal Pradesh|url = http://www.tribuneindia.com/2003/20030112/himachal.htm#3|website = www.tribuneindia.com|accessdate = 2016-01-04}}</ref><ref>{{Cite web|title = The Tribune, Chandigarh, India - Himachal Pradesh|url = http://www.tribuneindia.com/2005/20050311/himachal.htm#1|website = www.tribuneindia.com|accessdate = 2016-01-03}}</ref>

==See also==
{{stack|{{Portal|Water|Renewable energy}}}}
*[[Pong Dam]] – located {{Convert|140|km|mi|0|abbr=on}} downstream, the second phase of the Beas Project
*[[Bhakra Dam]] – downstream of Dehar Power Station

==References==
{{GeoGroupTemplate}}
{{reflist}}

{{Hydrography of Himachal Pradesh}}
{{Power Projects in Himachal Pradesh}}

[[Category:Dams completed in 1977]]
[[Category:Energy infrastructure completed in 1977]]
[[Category:Dams in Himachal Pradesh]]
[[Category:Hydroelectric power stations in Himachal Pradesh]]
[[Category:Run-of-the-river power stations]]
[[Category:Dams on the Beas River]]
[[Category:1977 establishments in Himachal Pradesh]]
[[Category:Buildings and structures in Mandi district]]

Pandoh Dam - Revision history

CleanupBot II: Removed empty portal template using script

imported>BrownHairedGirl: removed Category:1977 establishments in India; added Category:1977 establishments in Himachal Pradesh using HotCat