Because he saw dam's as an increasing earnings for farmers and gaining higher economic development for our country so he proclaimed dam's as temple's of modern India

Introduction:
Jawaharlal Nehru, the first Prime Minister of India, played a crucial role in the development of India's infrastructure, particularly the construction of dams. He proudly proclaimed the dams as the "Temples of modern India" because of the numerous benefits they brought to the country. Here are three reasons why Nehru held this belief:

1. Economic Development:
The construction of dams in India brought significant economic development to the country. Nehru envisioned these dams as the key to transforming India from an agrarian society to an industrialized nation. The generation of hydroelectricity from the dams provided a reliable and affordable source of power for industries, leading to increased industrial production. This, in turn, stimulated economic growth, created job opportunities, and improved the standard of living for millions of people.

2. Agricultural Advancement:
Agriculture has always been the backbone of India's economy, and Nehru recognized the importance of irrigation for agricultural development. Dams facilitated the construction of canals and reservoirs, enabling the controlled distribution of water for irrigation purposes. This resulted in increased agricultural productivity, as farmers were able to cultivate their lands throughout the year, even during dry seasons. The availability of water for irrigation also encouraged the adoption of modern farming techniques and the cultivation of high-yielding crop varieties, further enhancing agricultural output.

3. Flood Control and Water Management:
India is prone to frequent floods, causing significant damage to lives, property, and infrastructure. Nehru understood the importance of controlling and managing water resources effectively. Dams played a crucial role in flood control by regulating the flow of rivers and preventing excessive water from causing devastating floods. The reservoirs created by dams served as storage for excess water during monsoons, which could be utilized during dry periods. This not only helped in flood mitigation but also ensured a steady supply of water for various purposes, including drinking water, irrigation, and industrial needs.

Conclusion:
Jawaharlal Nehru proudly proclaimed the dams as the "Temples of modern India" due to their immense contribution to the economic development, agricultural advancement, and flood control in the country. These dams played a vital role in transforming India into a self-sufficient and prosperous nation.