This could be factory runoff being sent directly into a creek or river. This direct form of runoff is caused by the emptying of water directly into a body of water. This type of water is referred to as point source and nonpoint source pollution.ĭredging is a common practice used to reduce the effects of both forms of runoff. Snowmelt occurs when warm temperatures cause heavy snow on the mountains to melt on surfaces that can’t absorb the water, thus causing the snowy water to run off the mountain toward a nearby body of water.Īdditionally, whether intentional or not, managing a piece of land for any number of reasons (even non-industrial) can cause man-made runoff. Rain is the most common cause for runoff, but we might also see other causes for it, especially when managing an industrial plot of land.ĭepending on where your land sits in relation to any nearby mountains, snowmelt is the most common form of runoff.
You may wonder, isn’t it all from rain? The answer is yes - but also no. Knowing where runoff occurs, we can follow the water uphill to its source to see where it comes from. Ponds, lakes, reservoirs and sinks in the basin.Physical traits of the land that impact runoff can include: Previous precipitation or previous soil saturation.The distribution of rainfall over the drainage basin.The type of precipitation and its intensity, amount and duration.Meteorological factors that influence storm water runoff management include: The flow of runoff is largely impacted by the land’s physical characteristics and the weather’s meteorological factors. Because of this, runoff flows downward until it meets a large body of water, such as a river, creek, ocean or reservoir. The laws of nature prove that water always flows toward the path of least resistance and, like all other things, follows the pull of gravity. When rain meets land that is over-saturated because of impervious surfaces, the water will run overland. That’s one example of how we manage runoff - but more on that later. It’s a large component of the water cycle, and when rain pours, the streets flood this runoff into the sewer drains.
Runoff is any water that runs off the land’s surface. Knowing what runoff is plays a big role in learning where it’s typically found. But before you get into the ins and outs of dredging to control runoff water, it’s important to understand what runoff is, where it comes from and how you can best manage it. Managing runoff can be a crucial component of maintaining the health of your job site or managed land. If you’ve ever owned or managed a piece of land, you’ve likely had to deal with runoff, even if you didn’t know it.
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