India was forced to take control of the project and at first it was placed under the direction of the Irrigation Department of Uttar Pradesh. In 1986, technical and financial assistance was provided by the USSR but this was interrupted years later with political instability. Construction began in 1978 after feasibility studies but was delayed due to financial, environmental and social impacts. Ī preliminary investigation for the Tehri Dam Project was completed in 1961 and its design was completed in 1972 with a 600 MW capacity power plant based on the study. These lowland forests have mostly been cleared for agriculture, but a few pockets remain. The Upper Gangetic Plains moist deciduous forests and the drier Terai-Duar savanna and grasslands cover the lowlands along the Uttar Pradesh border. Below 1,500 metres (4,900 ft) elevation lie the Himalayan subtropical pine forests. At 3,000 to 2,600 metres (9,800 to 8,500 ft) elevation they transit to the temperate western Himalayan broadleaf forests, which lie in a belt from 2,600 to 1,500 metres (8,500 to 4,900 ft) elevation. Temperate coniferous forests, the western Himalayan subalpine conifer forests, grow just below the tree line. Below them, between 3,000 and 5,000 metres (9,800 and 16,000 ft) are montane grasslands and shrublands: the western Himalayan alpine shrub and meadows. The highest elevations are covered by ice and bare rock. Uttarakhand lies on the southern slope of the Himalaya range, and the climate and vegetation vary greatly with elevation, from glaciers at the highest elevations to subtropical forests at the lower elevations.
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