# International Scale of River Difficulty

> Grading system for river rapids

**Wikidata**: [Q1898028](https://www.wikidata.org/wiki/Q1898028)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/International_scale_of_river_difficulty)  
**Source**: https://4ort.xyz/entity/international-scale-of-river-difficulty


## References

1. Freebase Data Dumps. 2013