The Asan Barrage is a barrage in
the Uttarakhand-Himachal
Pradesh border region in Doon
Valley, (Dehradun District), northern India, situated at
the confluence of the Eastern Yamuna Canal and the Asan River and
about 11 km (7 mi) from Dakpathar,
and 28 km. northwest of Dehradun.
Directly behind the barrage on its eastern flank, water
reenters the Eastern Yamuna Canal on the west side of the Yamuna
River. At a distance of 4.5 km (3 mi) from the barrage on the
canal, water reaches the 30 MW Kulhal Power Plant at 30°25′43″N 77°37′46″E.
The power plant contains three 10 MW Kaplan
turbine-generators and has a design hydraulic
head of 18 m (59 ft). Once
discharged from the power station, the water is conducted by the canal
13 km (8 mi) to the 72 MW Khara Power Station at30°21′02″N 77°36′06″E in Uttar
Pradesh. The Khara Power Station contains three 24 MW Francis
turbine-generators and a has a net head of 43 m (141 ft).
The dam creates the Asan Reservoir, also called Dhalipur
Lake. The lake is popular for bird watching and 53 species are known to
make a habitat there, 19 species are migratory from Eurasia.
Asan River
The Asan river is a river fed by the streams of the western part of the Doon valley. The northern section of the river is known locally as the 'Tons nadi' (a misnomer, the actual Tons nadi is much larger and flows into the Yamuna in the Jaunsar Bawar region at Kalsi); originates from the southern slopes of Mussorie. There are several streams here, that gradually merge into one river that emerges from Robber's cave. The river here is in a U-shaped valley meandering slightly in a south-westerly direction. The river flows throughBijapur canal; a major water pumping site of Dehradun that provides water to houses in the western part of the town through two water canals. It then moves on to Tapkeshwar Mahadev, a popular Shiva shrine before becoming a more shallow, broad valley near Premnagar. The river proceeds south-west, receiving the waters of several streams flowing southward from the northern range spanning Vikas Nagar - Mussorie; and northward from the lower Shiwalik forest hills that separate The Doon valley from Saharanpur district. In the lower section it is known as the 'Asan'. It flows into a relatively flat section which feeds the Asan barrage, the waters of which drain into the Yamuna at Poanta Sahib.
The Asan river is a river fed by the streams of the western part of the Doon valley. The northern section of the river is known locally as the 'Tons nadi' (a misnomer, the actual Tons nadi is much larger and flows into the Yamuna in the Jaunsar Bawar region at Kalsi); originates from the southern slopes of Mussorie. There are several streams here, that gradually merge into one river that emerges from Robber's cave. The river here is in a U-shaped valley meandering slightly in a south-westerly direction. The river flows throughBijapur canal; a major water pumping site of Dehradun that provides water to houses in the western part of the town through two water canals. It then moves on to Tapkeshwar Mahadev, a popular Shiva shrine before becoming a more shallow, broad valley near Premnagar. The river proceeds south-west, receiving the waters of several streams flowing southward from the northern range spanning Vikas Nagar - Mussorie; and northward from the lower Shiwalik forest hills that separate The Doon valley from Saharanpur district. In the lower section it is known as the 'Asan'. It flows into a relatively flat section which feeds the Asan barrage, the waters of which drain into the Yamuna at Poanta Sahib.
The Asan River has been identified with the Asmanvati of
the Rigveda.
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