Not Example of Hydraulic Structures in Ancient India

Introduction
Hydraulic structures played a crucial role in Ancient India's water management system. They were constructed to store, divert, and regulate the flow of water for irrigation, drinking, and other purposes. However, one of the following options is not an example of hydraulic structures in Ancient India.

Damodar Valley Project
The Damodar Valley Project is not an example of hydraulic structures in Ancient India. It is a multi-purpose river valley project located in the Damodar river basin, which spans across the Indian states of West Bengal and Jharkhand. The project was initiated in 1948, after India's independence, and aimed to control floods, generate hydroelectricity, and promote irrigation in the region.

Examples of Hydraulic Structures in Ancient India
Here are some examples of hydraulic structures in Ancient India:

Bhopal Lake
Bhopal Lake is an artificial lake constructed by Raja Bhoj of the Parmar dynasty in the 11th century. It is located in the city of Bhopal in the Indian state of Madhya Pradesh. The lake was built by constructing an earthen dam across the Kolans River, which is a tributary of the Betwa River.

Lake Hauz Khas
Lake Hauz Khas is a medieval water tank located in the Hauz Khas locality of Delhi, India. It was built by Alauddin Khalji, the second ruler of the Khalji dynasty, in the 14th century. The lake was constructed by damming a natural stream, and it served as a source of water for irrigation and drinking.

Construction of Dams and Lakes
The construction of dams and lakes was a common practice in Ancient India. Some of the notable examples include:

- The construction of the Kallanai dam across the Kaveri River in the 2nd century BCE by the Chola dynasty in Tamil Nadu.
- The construction of the Puhar dam across the Kaveri River in the 1st century BCE by the Chola dynasty in Tamil Nadu.
- The construction of the Sone dam across the Sone River in the 9th century CE by the Rajput dynasty in Bihar.

Conclusion
In conclusion, the Damodar Valley Project is not an example of hydraulic structures in Ancient India. It is a modern river valley project initiated after India's independence. However, Ancient India had a rich tradition of constructing hydraulic structures such as dams, lakes, and tanks for water management purposes.