Tehri Dam

Tehri Dam
Tehri dam, Uttarakhand in 2008; dam is 800 feet
Location of Tehri Dam in Uttarakhand
Country	India
Location	New Tehri, Tehri Garhwal district, Uttarakhand, India
Coordinates	30°22′40″N 78°28′50″E / 30.37778°N 78.48056°E / 30.37778; 78.48056
Status	Operational
Construction began	1978
Opening date	2006
Construction cost	US $2.5 billion
Owner(s)	THDC India Limited
Dam and spillways
Type of dam	Embankment, earth and rock-fill
Impounds	Bhagirathi River
Height	260.5 m (855 ft)
Length	575 m (1,886 ft)
Width (crest)	20 m (66 ft)
Width (base)	1,128 m (3,701 ft)
Spillways	2
Spillway type	Gate controlled
Spillway capacity	15,540 m3/s (549,000 cu ft/s)
Reservoir
Total capacity	3.54 km3 (2,870,000 acre⋅ft) (125.03 tmc ft)
Surface area	52 km2 (20 sq mi)
Power Station
Commission date	2006
Type	P no
Turbines	Francis pump turbines
Installed capacity	1,000 MW (1,300,000 hp) Planned: 2,400 MW
Website www.thdc.co.in

The Tehri Dam is a multi-purpose rock and earth-fill embankment dam on the Bhagirathi River in New Tehri, Tehri Garhwal district in Uttarakhand, India.^[1] With a height of 260.5 m (855 ft), it is the tallest dam in India and the 13th-tallest dam in the world. It is the primary dam of THDC India Ltd. and the Tehri hydroelectric complex. The dam begun construction in 1978 and was completed in 2006. It withholds a reservoir for irrigation, municipal water supply and the generation of 1,000 megawatts (1,300,000 hp) of hydroelectricity. The dam's 1,400 MW variable-speed pumped-storage scheme is currently under construction, with the commissioning of the first two units was expected to be completed in 2023, which got finished in March 2024, and the rest to be done by 2025.^[2][3]