File:Land ocean ice cloud hires.jpg
Water covers 70% of the Earth's surface
File:Fernando noronha.jpg
Vew of Fernando de Noronha, Brazil

Hydrology [1] is the study of movement, distribution, and quality of water throughout the Earth.[2] A person who studies hydrology is called a hydrologist.

The central theme of hydrology is how the water circulates. This is called the water cycle. The most vivid illustration of it is the water evaporation from the ocean with the formation of clouds. These clouds drift over the land and produce rain.[3]

Related pages


  1. from Lua error in package.lua at line 80: module 'Module:Language/data/iana scripts' not found., hudōr, "water"; and λόγος, logos, "study"
  2. What is hydrology and what do hydrologists do?
  3. Basic Ground Water Hydrology