Key Dams in India:
- Highest Dam: Tehri Dam (Uttarakhand), on Bhagirathi River. Height: 260.5 m.
- Longest Dam (earthen): Hirakud Dam (Odisha), on Mahanadi River.
- Largest Masonry Dam (by storage capacity/length): Nagarjuna Sagar Dam (Telangana/Andhra Pradesh), on Krishna River.
- Oldest Dam (still in use): Kallanai Dam (Tamil Nadu), on Kaveri River.