The Effect of Rainwater Runoff on Soil

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Introduction: Rainwater runoff, also called non-point source, is everywhere, especially in the artificial concrete communities that we live in. Rainwater runoff occurs after rain showers and thunderstorms, when the water flows down streets, sidewalks and gutters. There is so much rainwater runoff now a day because of the colossal neighborhoods and buildings and parking lots we are creating. The runoff happens when the water can’t soak into the ground, like it naturally does. With growing cities and industrialization, runoff water is becoming more and more of a problem and people need to start worrying about it. Runoff water has the possibility of becoming very dangerous, depending on what the water takes with it. Pesticides, garbage, bacteria, sediments from roads, feces and oil/gasoline are just some of the many substances that rainwater runoff carries with it on it’s journey; and lets not forget about all of the possible toxic chemicals that would fall into its path. So many residencies have been built, causing more runoff water because it isn’t being absorbed into the soil, since the soil is covered in concrete or other substances that were used to build. Everything that rests in gutters also goes down into the soil and in sewers that dump water into soil or other bodies of water, and the effects can both be positive and negative. Substances such as phosphate can travel with the runoff water into areas with soil and grass, causing it to grow faster. While some people may think fast growing grass is helpful, lets not forget about the rest of the environment the phosphate can effect. Certain algae’s can be harmful to humans when ingested. After knowing that, people should realize that it is time for environmental management to co...

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...ls are not very suitable for drinking water but they could be suitable for plants and animals to live with. The pH level from both sample one and sample two of runoff water was eight and a half. The tests from both sample one and sample two of runoff water contained a very high level of nitrate content of about ten and a half. The phosphate levels from both sample one and sample two was about 10 and a half.
Conclusion: The phosphate levels in rainwater runoff in the environment can be very harmful to humans, but not plants. Phosphate helps the plants, grass and algae grow and certain plants and algae are harmful. But at the same time, excess phosphate means excess algae and excess algae lowers the dissolved oxygen levels and if the dissolved oxygen levels are lowered, many fish and aquatic animals cannot survive, leaving the environment with plants but no animals.

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