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.

Maneri Dam
Maneri Dam is located in India
Maneri Dam
Location of Maneri Dam in India
Coordinates30°44′21″N 78°31′43″E / 30.73917°N 78.52861°E / 30.73917; 78.52861Coordinates: 30°44′21″N 78°31′43″E / 30.73917°N 78.52861°E / 30.73917; 78.52861
Owner(s)Uttarakhand Jal Vidyut Nigam Limited
Dam and spillways
Type of damGravity
ImpoundsBhagirathi River
Height39 m (128 ft)
Length127 m (417 ft)
Dam volume13,700 m3 (17,919 cu yd)
Spillway capacity5,000 m3/s (176,573 cu ft/s)
Total capacity600,000 m3 (486 acre⋅ft)
Active capacity510,000 m3 (413 acre⋅ft)
Surface area1.8 km2 (1 sq mi)
Tiloth Power Station
Coordinates30°43′36″N 078°26′44″E / 30.72667°N 78.44556°E / 30.72667; 78.44556
Commission date1984
Turbines3 x 30 MW (40,000 hp) Francis-type
Installed capacity90 MW (120,000 hp)


The power station is stage one of the Maneri Bhali Hydroelectric Project which was planned in the 1960s. It was completed and commissioned in 1984. Dharasu Power Station, the second stage, was halted in 1990 due to funding issues and was not restarted until 2002.[1] It was eventually completed and commissioned by 2008.[2]

Design and operationEdit

The Maneri Dam is a 39 m (128 ft) tall and 127 m (417 ft) wide gravity dam with a structural volume of 13,700 m3 (17,919 cu yd). It's spillway is located on its crest and is controlled by four tainter gates. In addition to discharge tunnel, the spillway has a maximum discharge capacity of 5,000 m3/s (176,573 cu ft/s). The dam's reservoir has a 600,000 m3 (486 acre⋅ft) capacity, of which 510,000 m3 (413 acre⋅ft) is active (or "useful") capacity.[3] Water supplied to the power station is first diverted from the Bhagirathi River by the dam into a 8.6 km (5.3 mi) long tunnel directly behind the dam. The difference in elevation between the barrage and the power station affords a design hydraulic head of 147.5 m (484 ft) and gross head of 180 m (590 ft). Near the Tiloth Power Plant, the tunnel splits into three penstocks to power each of the three 30 MW Francis turbine-generators before being discharged back into the river. The design discharge of the power station is 71.4 m3/s (2,521 cu ft/s).[4]

See alsoEdit


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  1. ^ "Power from Maneri Bhali by year-end". Outlook India. 12 March 2006. Retrieved 11 July 2011.
  2. ^ "Dharasu HEP (4x76=304 MW)". Uttaranchal Jal Vidyut Nigam Limited. Archived from the original on 27 December 2009. Retrieved 11 July 2011.
  3. ^ "India: National Register of Large Dams 2009" (PDF). Central Water Commission. Archived from the original (PDF) on 21 July 2011. Retrieved 10 July 2011.
  4. ^ "Maneri Bhali Stage-I (Tiloth) Power Plant (3x30=90 MW)". Uttarakhand Jal Vidyut Nigam Limited. Archived from the original on 12 January 2012. Retrieved 12 July 2011.