Water-Cycle And Hydrological-Cycle: Are They Separate?


Water-Cycle and hydrological-cycle are not the same, though they involve the same fluid, water.

Hydrology is the study of water. It says what effect a dam built on the downstream environment. Hydraulics is the study of water flowing in closed and open channels. Both hydraulics and hydrology are in the research of barriers and the study of the effects on the environment.

The hydrologic cycle is the study of rainfall events and how they impact the environment. Because the dam holds back to the water, the water acts as an impervious surface. It has a runoff coefficient of asphalt or concrete. Let’s assume it is a vast body of water compared to the downstream drainage basin. Then flooding events will occur more often. Proper dam design will include a reserve volume for flooding events.

Water-Cycle And Hydrological-Cycle: Are They Separate?
Water-Cycle And Hydrological-Cycle: Are They Separate?

Is Water-Cycle And Hydrological-Cycle Same?

In the water cycle, the water goes through a molecular transformation from liquid, through evaporation, to a gaseous state. vapor is hot and extends into the environment. It condenses as clouds in the atmosphere. It eventually cools enough to fall back as rain or snow. Now, depending on which part of the world, the condensation takes place. The time of the year is a factor. Note, however, that the study of the ocean is not part of hydrology. That is oceanography.

Water-Cycle And Hydrological-Cycle: Are They Separate?
Water-Cycle And Hydrological-Cycle: Are They Separate?

Importance Of Water Cycle

Movement of air causes water to evaporate into the atmosphere. Once it reaches a certain height, it encounters lower temperatures. There it condenses, forming clouds. Once enough water is condensing in a cloud, it can no longer resist gravity. It precipitates out of the dust in the form of rain, snow, sleet, or ice, as determined by the temperature. Once it lands on the Earth, it will run over the ground. Or into it until it assembles into a lake, an underground aquifer, or finds its way to the ocean. Some of this water will divert to cities where it may end up in your swimming pool, or a glass of water. Wherever it ends up, as long as there is an atmosphere above it, then the cycle starts again. The stages are sometimes labeled differently. Some call the last step, “collection.” This is how I learned it.

The water cycle consists of three major processes: evaporation of water from the water body, condensation in the form of clouds, and precipitation in the form of rain.

The water cycle is essential for many reasons:

• Some water is deep in the Earth, which improves the water table.

• It controls the ecological function of aquatic life and increases the levels of dissolved oxygen.

• Water makes up to 70% of all living matter.

• All living organisms require water because growth is dependent on water. Living beings cannot survive without water.

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