River pollution is form of water pollution that refers to the contamination of rivers. River pollution occurs when waste and different other pollutants are discharged into river without being properly treated. River pollution has negative effect on aquatic ecosystems. The negative impact on plants and animals often leads to decline in species, and sometimes even to extinction of entire species (Yangtze River dolphin). River pollution also leads to decrease in freshwater resources because rivers are among most important sources of freshwater in the world. This means that the excessive river pollution could easily lead to global water shortage. Excessive river pollution could also lead to many waterborne diseases. Pollution can be in a variety of forms:
Rubbish like crisp packets, newspaper and bags. Oil,Poisonous substances,Cans, bottles and other solid objects,Human waste / excrement Factories
Factories use water from rivers to power machinery or to cool down machinery. Dirty water containing chemicals is put back in the river. Water used for cooling is warmer than the river itself, and this is also a form of pollution. People
People are sometimes careless and throw rubbish such as bottles and crisp packets directly into rivers Agriculture
Farmers put fertilizers and pesticides on their crops so that their crops grow better. But these fertilizers and pesticides can be washed through the soil by rain, to end up in rivers. Fertilizers and pesticides are harmful because they cause algae to grow. The algae then destroy water plants. Construction site stormwater
Silt fence installed on a construction site.
Sediment from construction sites is managed by installation of: erosion controls, such as mulching and hydroseeding,and sediment controls, such as sediment basins and silt fences.Discharge of toxic chemicals such as motor fuels and concrete washout is prevented by use of:spill prevention and control plans, and specially designed containers...