Sambalpur, July 10: As the annual floodwater discharge from the Hirakud Dam begins, one question invariably draws public curiosity: Why is Gate No. 7 of the left spillway always opened first?

While several myths and interesting stories have circulated over the years, the dam's Chief Engineer, Er. Pratap Chandra Choudhury, has clarified that there is no technical or engineering reason behind the practice.

Speaking on the issue, Choudhury said the tradition dates back several decades and is rooted in the belief that the number seven is considered auspicious. Since the practice was established in the early years of the dam's operation, authorities have continued to follow the same sequence every year.

The Hirakud Dam has 40 gates on the left (Hirakud) spillway and 24 gates on the right (Burla) spillway, with the left spillway playing a larger role in floodwater management. The Chief Engineer also noted that because Hirakud is an earthen dam, the initial spillway gates are generally opened only when operationally required, and there is no engineering compulsion to begin with Gate No. 7.

Built as one of the world's largest multipurpose river valley projects, the Hirakud Dam is known for its massive water storage capacity and advanced flood management system. Yet, the annual opening of the spillway gates continues to reflect a blend of engineering practices and long-standing tradition.

Before the first gate is opened each year, officials continue the customary rituals, including special prayers and homa, a practice that has remained unchanged despite advances in dam management technology. The continuation of the tradition is widely seen as a symbolic fusion of modern engineering and cultural heritage.