Hydrologic Cycle

Evaporation, condensation, precipitation, infiltration and percolation – repeat. This is called the hydrologic cycle and it is responsible for all our drinking water. Pond water is known in a general sense as fresh water and is a necessary resource for humans and other land dwelling organisms.

Interestingly enough, only about one percent of the world’s water is safe for human consumption. Fresh water is naturally occurring, and is found in ice caps, icebergs, ponds, lakes and rivers. So what make freshwater ‘fresh?’ Generally speaking, fresh water has to have a low concentration of dissolved solids such as sodium.

Fresh water is found in ponds, lakes and rivers. These pockets of freshwater can range from only a few square meters to thousands or more in size. An interesting fact about ponds is that many are seasonal and only last a few months. Because ponds and lakes are isolated, their species diversity is limited and can be divided into different zones which are categorized by depth and distance from the shoreline.

The source of virtually all fresh water is from rain, mist and or snow – part of the hydrologic cycle. Depending on the area of the rain fall, the water can have higher concentrations of sulfur and nitrogen which can cause acid rain.

Either way, next time you see a lake or pond, or drink a cold glass of water. Remember, it is truly an important resource.

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