Hydrologic research encompasses a wide range of topics related to water, including its movement, distribution, conservation, and management, as well as the impacts of climate change on water resources.

While laboratory experiments are commonly used in other scientific fields, they are less common in hydrologic research due to the difficulty of replicating natural hydrologic processes in a controlled laboratory setting.

Hydrogeology is the branch of hydrology that deals with the movement of water through the Earth's subsurface, including groundwater flow and aquifer recharge.

Hydrometeorology is the branch of hydrology that deals with the relationship between water and the atmosphere, including precipitation, evaporation, and cloud formation.

Hydrology is the branch of science that deals with the movement of water on the Earth's surface, including rivers, lakes, and oceans.

Hydrodynamics is the branch of physics that deals with the forces that govern the movement of water, including fluid flow and wave propagation.

Hydrochemistry is the branch of chemistry that deals with the chemical and biological processes that occur in water, including the composition of water and the reactions that take place in it.

Hydrophysics is the branch of physics that deals with the physical properties of water, including its density, viscosity, and surface tension.

Hydroanthropology is the branch of anthropology that deals with the study of the effects of human activities on water resources, including water use, pollution, and climate change.

Hydroeconomics is the branch of economics that deals with the study of the management of water resources, including water pricing, water allocation, and water conservation.

Hydroagronomy is the branch of agronomy that deals with the study of the use of water in agriculture, including irrigation, drainage, and soil moisture management.

Hydroindustry is the branch of industry that deals with the study of the use of water in industry, including water use, water treatment, and water conservation.

Hydrogeography is the branch of geography that deals with the study of the use of water in urban areas, including water supply, wastewater treatment, and stormwater management.

Hydrology is the branch of science that deals with the study of the use of water in rural areas, including water supply, wastewater treatment, and irrigation.

Hydrodevelopment is the branch of development that deals with the study of the use of water in developing countries, including water supply, wastewater treatment, and irrigation.