A scientist who studied water is called what?

Hint: Just remember it this way; you can guess most of the names of professionals by looking at their topic which they consider to study. For example, the professionals who study chemistry are called chemists, persons whose study is based on psychology are called psychologists, etc, so you can name the scientist who studies water. The study of water is called hydrology.

Complete answer:
The study of water is termed hydrology. The scientists who studied water are known as hydrologists.
Hydrology consists of several different subdomains such as marine, hydrology, groundwater hydrology, and water hydrology. It has evolved as a science in response to the need to understand the complex water system of the earth and help solve water problems. This hydrology primer gives you information about water on Earth and humans' involvement and use of water. Hydrology is the science that encompasses the occurrence, distribution, movement, and properties of the waters of the earth and their relationship with the environment within each phase of the hydrologic cycle or water cycle.
Hydrologists are the professionals who deal with or study the science of water movement through the atmosphere (land surface and underground). They play a vital role in solving water-related problems such as water management, environmental preservation, etc. The hydrologist studies the fundamental transport processes to be able to describe the quantity and quality of water as it moves through the cycle. They apply scientific knowledge and mathematical principles to solve water-related problems in society. The work of hydrologists is as varied as the uses of water and may range from planning multimillion-dollar interstate water projects to advising homeowners about backyard drainage problems.

Note:
Hydrology has evolved as a science in response to the need to understand the complex water systems of the Earth and help solve water problems. Hydrology is an extremely important field of study, dealing with one of the most valuable resources on Earth: water.