Get to Know About Your Water Supply More Than the Hydrological Cycle

The first thing that comes to our mind when we think about groundwater is that it hardly ever occurs in the form of ‘underground streams’. For sure, we’ve all seen underground streams in limestone caves. But such caves are highly unrepresentative of the subsurface as a whole. For the most part, the holes through which groundwater must move would not admit any living organism bigger than a bacterium.

Given this, groundwater is in such intimate contact with mineral grains that it just cannot run along like a brook. Rather, it seeps slowly, from pore to pore, filtering down from the soil surface until it reaches a level at which all of the pores are filled with water: the water table. If you would like to see the water table, go to a river during the dry season and look at the water surface: that will be at a level corresponding to the water table in the surrounding ground.

The water table is ubiquitous: a smooth surface mimicking the overlying topography in a subdued manner. Hence, when imagining groundwater, forget rivers and instead think of a ‘hidden sea’. The fact that the water table is everywhere below our feet explains the apparent success rate of ‘dowsers’ (water diviners): you can twist a forked stick anywhere you like and, if you drill down there, you will eventually hit the water table. It is not whether water is present that is at issue; it is how deep the water table lies, and how fast the water can be made to move through the pores if we pump from a well. Few diviners make confident predictions on these two key points.

The hydrological cycle
Once water first makes it to the Earth’s surface, by whatever route, it will ever after be circulating from one place to another: evaporating from the ocean, falling as rain, running off in streams, infiltrating to the subsurface, rising again to feed springs, rivers, lakes or the sea, joining all of the surface runoff that also flows out to sea.

This endless dance of water molecules, which is usually referred to as the hydrological cycle, is driven by two fundamental forces: solar radiation and gravity. Remove either of these and the whole dance stops. Thus we find that small planets with weak gravity fields, such as our Moon, don’t even exert enough pull to retain an atmosphere, let alone to drive water circulation.

Meanwhile, back on Earth, solar radiation initiates the dance: as the sun shines and heats the air, water molecules leave the oceans, rivers, lakes, soil and plants to form water vapour. When the warm, damp air meets a belt of cooler denser air, or some physical obstruction such as a mountain range, it is forced upwards, rapidly cooling and becoming denser.

Now, that you are now equipped with the scientific formulas and information behind the hydrological cycle of water, let’s come to the basics. We all know about the scarcity of water on the planet and hence it’s our moral responsibility to work towards a greener earth with more and more sources of water. So, don’t hesitate to call Thames Water Contact Number and get your freebies to save every precious drop on your end.