What Is The Definition Of Runoff In The Water Cycle?

Why is runoff a problem?

Runoff picks up fertilizer, oil, pesticides, dirt, bacteria and other pollutants as it makes its way through storm drains and ditches – untreated – to our streams, rivers, lakes and the ocean.

Reduce flooding – When heavy rain falls, the runoff that flows into the street can back up and cause street flooding..

How can human activity affect surface water?

Some human activities, such as pumping water into the ground for oil and gas extraction, can cause an aquifer to hold too much ground water. Too much ground water discharge to streams can lead to erosion and alter the balance of aquatic plant and animal species.

What is the runoff in the water cycle?

Runoff is nothing more than water “running off” the land surface. Just as the water you wash your car with runs off down the driveway as you work, the rain that Mother Nature covers the landscape with runs off downhill, too (due to gravity). Runoff is an important component of the natural water cycle.

What are examples of runoff?

Runoff from nonpoint sources includes lawn fertilizer, car exhaust, and even spilled gasoline from a car. Farms are a huge nonpoint source of runoff, as rainwater and irrigation drain fertilizers and pesticides into bodies of water. Impervious surfaces, or surfaces that can’t absorb water, increase runoff.

How do you deal with runoff water?

Consider these affordable, do-able solutions to do just that.Add plants. Incorporate plantings, especially in areas where runoff collects. … Protect trees. Like other plant roots, tree roots help absorb and filter runoff. … Break up slabs. … Go permeable. … Catch runoff. … Dig a trench. … Plant a rain garden. … Cover soil.More items…

What is runoff and its types?

3 Runoff can be defined as the portion of the precipitation that makes it’s way towards rivers or oceans etc, as surface or subsurface flow. Surface runoff can be generated either by rainfall, snowfall or by the melting of snow, or glaciers. … Types of Runoff: Surface runoff/ Sub-surface runoff or Base flow.

How do you reduce surface runoff?

Start with doing one of the actions on the following top 10 list:Maintain your car or truck. … Wash your car at a commercial car wash rather than in the street or in your driveway. … Drive less. … Cut down on fertilizers, pesticides and herbicides. … Remove part or all of your lawn.More items…•

What is a runoff definition?

1 : a final race, contest, or election to decide an earlier one that has not resulted in a decision in favor of any one competitor. 2 : the portion of precipitation on land that ultimately reaches streams often with dissolved or suspended material. run off. verb. ran off; run off; running off; runs off.

What is runoff short answer?

Runoff can be described as the part of the water cycle that flows over land as surface water instead of being absorbed into groundwater or evaporating. Runoff is that part of the precipitation, snow melt, or irrigation water that appears in uncontrolled surface streams, rivers, drains, or sewers.

Is runoff good or bad?

Runoff from agricultural land (and even our own yards) can carry excess nutrients, such as nitrogen and phosphorus into streams, lakes, and groundwater supplies. These excess nutrients have the potential to degrade water quality.

How do humans affect runoff?

Human activities can affect runoff In addition to increasing imperviousness, removal of vegetation and soil, grading the land surface, and constructing drainage networks increase runoff volumes and shorten runoff time into streams from rainfall and snowmelt.

How is runoff controlled?

Some ways to help control runoff are preventing soil erosion, providing basement flood protection, landscaping, providing proper roof drainage, and minimizing paved surfaces.

What is another word for runoff?

Runoff Synonyms – WordHippo Thesaurus….What is another word for runoff?sewageexcrementoutpouringemanationeffluenceeffluxpollutionseepageoverflowliquid waste49 more rows

What is direct runoff?

Water that flows over the ground surface directly into streams, rivers, or lakes. Also called storm runoff.