Question

On which river is Koyna Dam built?
a. River Krishna
b. River Kaveri
c. River Bhadra
d. None of these

Answer 1

Hint: The Koyna dam was built by the Maharashtra government.
After the Ganga, Godavari and Brahmaputra, the river is India's fourth largest river in terms of water inflows and river basin area. Before entering Telangana State, it flows through the state of Karnataka.

Complete answer:
Koyna Dam introduction -
One of the biggest dams in Maharashtra, India, is the Koyna Dam. It is a rubble-concrete dam built on the Koyna River that rises in the Sahyadri range of Mahabaleshwar, a hill station. It is situated on the state highway between Chiplun and Karad in Koyna Nagar, Satara district, nestled in the Western Ghats.

Aim of the dam –
Hydroelectricity, with some irrigation in nearby regions, is the main purpose of the dam. Today, the Koyna Hydroelectric Project has a total installed capacity of 1,920 MW and is the largest completed hydroelectric power plant in India. The Koyna River is known as the 'Maharashtra lifeline' because of its electricity generation capacity.

Facts –
- The Koyna is a tributary to the Krishna River.
- It originates in Mahabaleshwar and meets Krishna in a location called Karad, Satara.
- Preeti Sangam is called the confluence of the rivers Koyna and Krishna, meaning 'love confluence'.
- Karad is well known for sugar production.
- The north-south direction of the river flows.
-The east-west direction is where most other rivers flow.
- The river is also called the 'Maharashtra lifeline'.

Hence, the correct answer is option A.

Note:
- In India, it is the largest completed hydroelectric power plant. It has an installed capacity of 1,920 MW in total. During the 1967 KoynaNagar earthquake, a few cracks formed in the dam. The dam has also experienced numerous other smaller earthquakes.
- The dam's spillway is located in the middle. There are 6 radial gates in it. In the monsoon season, the dam plays a crucial role in flood control.