| Maneri Dam | |
| Location Map: | India |
| Coordinates: | 30.7392°N 78.5286°W |
| Country: | India |
| Location: | Uttarkashi |
| Status: | O |
| Owner: | Uttarakhand Jal Vidyut Nigam Limited |
| Dam Type: | Gravity |
| Dam Height: | 390NaN0 |
| Dam Length: | 1270NaN0 |
| Dam Volume: | 137000NaN0 |
| Dam Crosses: | Bhagirathi River |
| Spillway Capacity: | 50000NaN0 |
| Res Capacity Total: | 6000000NaN0 |
| Res Capacity Active: | 5100000NaN0 |
| Res Surface: | 1.80NaN0 |
| Plant Name: | Tiloth Power Station |
| Plant Coordinates: | 30.7267°N 78.4456°W |
| Plant Commission: | 1984 |
| Plant Turbines: | 3 x 30MW Francis-type |
| Plant Capacity: | 90MW |
The Maneri Dam is a concrete gravity dam on the Bhagirathi River located at Maneri, east of Uttarkashi in Uttarkashi district, Uttarakhand, India. The primary purpose of the dam is to divert water into a tunnel which feeds the run-of-the-river Tiloth Power Plant.
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]
The Maneri Dam is a 390NaN0 tall and 1270NaN0 wide gravity dam with a structural volume of 137000NaN0. 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 50000NaN0. The dam's reservoir has a 6000000NaN0 capacity, of which 5100000NaN0 is active (or "useful") capacity.[3] Water supplied to the power station is first diverted from the Bhagirathi River by the dam into a 8.6km (05.3miles) long tunnel directly behind the dam. The difference in elevation between the barrage and the power station affords a design hydraulic head of 147.5m (483.9feet) and gross head of 180m (590feet). 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 71.40NaN0.[4]