National Waterway 80
National WaterwaysTamil NaduImportance 3/5medium
Ponniyar River. Official length: 126 km.
Why UPSC cares
- Exam theme: Water.
- Exam theme: Infrastructure.
Prelims facts
- Coordinates:
- 10.4955° N, 78.8939° E
- State/UT:
- Tamil Nadu
- Category:
- National Waterways
- Length:
- 126 km
Prelims lens · study aid, machine-composed from the facts above — verify before citing
Remember National Waterway 80 as national waterways in Tamil Nadu. Ask yourself: which state, which neighbours on the map, and one current-affairs hook.
Related locations
- National Waterway 1 · Uttar Pradesh, Bihar, Jharkhand, West Bengal
- National Waterway 2 · Assam
- National Waterway 3 · Kerala
- National Waterway 4 · Andhra Pradesh, Telangana, Chhattisgarh, Karnataka, Tamil Nadu, Puducherry, Maharashtra
- National Waterway 5 · Odisha, West Bengal
- National Waterway 16 · Assam
Official sources
Source: Inland Waterways Authority of India / MoPSW
Code-reviewed 2026-09-24. Per-row source verification is in progress — verify boundaries with the Survey of India. Independent educational platform, not affiliated with UPSC.