Why is it important to model runoff water?
Have you ever been to a construction site? Did you notice the pathways that water carved through the soil? Those small ditches were caused by runoff. Runoff water is the main mechanism of erosion in many areas. But this is not the only problem caused by runoff water. The topsoil picked up by the water as it flows towards a river is deposited into the river. This can cause serious water quality problems. Water clarity and purity are affected by this extra soil. Another serious problem is that of contaminants carried by the runoff water. As it flows across streets and through fields, runoff water will carry chemicals such as motor oil, fertilizers and pesticides. These chemicals are carried to wherever the water drains. This can lead to an accumulation of these materials in the water bodies in that watershed. The result of adding pesticides and fertilizers can be disastrous. Most pesticides are toxic to all living creatures, not just bugs. Pesticides can have harmful effects even in smal
