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| Almatti Dam | |
|---|---|
| Name | Almatti Dam |
| Location | Bagalkot district, Karnataka, India |
| Status | Operational |
| Dam type | Gravity & masonry |
| River | Krishna River |
| Height | 50.5 m |
| Length | 4,205 m |
| Opening | 2005 (completed full reservoir in 2007) |
| Plant capacity | 290 MW |
Almatti Dam Almatti Dam is a major dam on the Krishna River in Bagalkot district, Karnataka, India, serving as a multipurpose project for hydroelectric power generation, irrigation water storage, and flood control. The project links to regional initiatives such as the Upper Krishna Project, state planning by Government of Karnataka, and interstate water arrangements involving Maharashtra and Andhra Pradesh. The dam's reservoir and operations have influenced infrastructure networks including the National Highway 52, regional agriculture in the Deccan Plateau, and energy grids managed by Karnataka Power Corporation Limited.
The dam is sited near Aihole and Badami in northern Karnataka within Bagalkot district, upstream of the confluence with tributaries from the Ghataprabha River and Malaprabha River, and downstream of the Bhima River basin. The site occupies a strategic position on the Krishna River between coordinates that connect to the Western Ghats rain shadow and the semi-arid Deccan Plateau, affecting catchment hydrology tied to the Monsoon of South Asia and regional climate patterns monitored by the India Meteorological Department. Proximity to cultural heritage sites like Pattadakal and trading centers such as Hubli–Dharwad has shaped access routes and economic linkages.
Planning traces to mid-20th century water resource schemes under the Upper Krishna Project and commissions such as the Bengaluru-based Central Water Commission and the Government of Karnataka. Feasibility studies referenced interstate tribunal deliberations like the Krishna Water Disputes Tribunal and agreements involving Maharashtra and Andhra Pradesh. Construction phases brought together agencies including Karnataka Power Corporation Limited, contractors with experience from projects like the Tungabhadra Dam and the Almatti Barrage Replacement Project, and financiers influenced by national plans under the Planning Commission of India. Major works progressed in the 1990s and 2000s with completion milestones in 2005 and reservoir filling in 2007, intersecting legal and administrative reviews by the Supreme Court of India and state administrations led by successive Chief Ministers of Karnataka.
The project is a composite masonry and concrete gravity dam with a length exceeding 4,200 metres and a structural height around 50.5 metres above riverbed, incorporating sluice gates, spillways, and an earth-cum-rock fill embankment that aligns with standards of the Central Water Commission and design practices seen in the Bhakra Dam and Sardar Sarovar Project. The powerhouse houses Kaplan and Francis turbines connected to generators with installed capacity totalling about 290 MW, built to interface with the regional grid overseen by Karnataka Power Transmission Corporation Limited and grid codes promulgated by the Central Electricity Regulatory Commission. Auxiliary works include intake towers, fish ladders influenced by designs from the World Bank guidelines, and road bridges linking to the National Highway network.
The reservoir, often referred to in project documentation as the Almatti Reservoir, has a gross storage nearing 3.7 billion cubic metres and live storage designed for irrigation and peaking hydroelectric operation, interacting with inflows from the Bhima River, Ghataprabha River, and seasonal runoff governed by the Indian monsoon. Reservoir operations are coordinated under protocols influenced by rulings from the Krishna Water Disputes Tribunal and data from the Central Water Commission and India Meteorological Department for flood forecasting. Sedimentation dynamics mirror issues at other tropical reservoirs like Nagarjuna Sagar and require catchment treatment and watershed programs promoted by the Ministry of Jal Shakti.
The hydroelectric plant's capacity of approximately 290 MW feeds into the State Load Dispatch Center of Karnataka and contributes peaking power alongside thermal and renewable sources such as the nearby Gulbarga solar projects and regional coal power stations. Operational regimes balance peaking generation, grid stability requirements under the National Electricity Grid, and water allocation priorities defined by the Upper Krishna Project master plan. Plant maintenance, turbine servicing, and auxiliary systems follow standards from manufacturers and regulatory oversight by agencies like the Central Electricity Authority, with grid dispatch coordinated through entities such as the Southern Regional Load Despatch Centre.
Irrigation benefits extend to command areas across Bagalkot district, Gulbarga district, and parts of the Raichur district, supporting crops including sugarcane, cotton, and paddy in alignment with agricultural policies from the Department of Agriculture, Karnataka. Canal networks derived from the reservoir link to schemes in the Upper Krishna Project delivering water to distributaries administered by state irrigation departments and local Gram Panchayats and cooperative societies similar to irrigation management models used by the Mysore region. Water-sharing arrangements have involved negotiations under the Krishna Water Disputes Tribunal and interventions by the Supreme Court of India when interstate allocations were contested.
Reservoir creation displaced villages and altered habitats, prompting resettlement programs overseen by state agencies and influenced by compensation frameworks used in projects like Sardar Sarovar Project and policies from the Ministry of Rural Development. Ecological effects include changes to riverine fisheries comparable to Godavari basin impacts, shifts in groundwater recharge, and biodiversity concerns in riparian zones near archaeological reserves at Aihole and Badami, monitored by agencies such as the Karnataka Forest Department and conservationists from institutions like the Indian Council of Forestry Research and Education. Ongoing mitigation efforts involve afforestation, catchment area treatment by the Natural Resources Management Directorate, and community rehabilitation programs linked to rural livelihoods supported by the National Rural Employment Guarantee Scheme.
Category:Dams in Karnataka