# Twenty-three unsolved problems in hydrology (UPH) – a community perspective

> Research article (Hydrological Sciences Journal, 2019) · cited 1,117× · AI/ML

**Wikidata**: [openalex:W2951276077](https://www.wikidata.org/wiki/openalex:W2951276077)  
**Source**: https://4ort.xyz/entity/twenty-three-unsolved-problems-in-hydrology-uph-a-community-perspective