Hierarchy classification:

1. top of the aat hierarchies
2. Agents Facet
3. People (hierarchy name)
4. people (agents)
5. [people by occupation]
6. [people in science-related occupations]
7. scientists
8. earth scientists

Narrower term/s

• hydrographers

Anotations

Scope note:

Generally, scientists who study the occurrence and movement of water on and over the surface of the earth. The particular processes with which hydrologists are concerned are precipitation, evaporation and transpiration, stream flow, and groundwater flow. Their work includes flood control, supplying water for domestic and industrial purposes, irrigation, and the production of hydroelectric power.