What Is The Process Of Runoff?

What is the runoff in the water cycle?

Runoff is the water that is pulled by gravity across land’s surface, replenishing groundwater and surface water as it percolates into an aquifer or moves into a river, stream or watershed..

What are the 2 types of runoff?

Runoff may be classified according to speed of appearance after rainfall or melting snow as direct runoff or base runoff, and according to source as surface runoff, storm interflow, or groundwater runoff. 2.

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 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.

What are 5 ways humans pollute runoff?

Stormwater runoff pollution and how to reduce itOil, grease, metals and coolants from vehicles;Fertilizers, pesticides and other chemicals from gardens and homes;Bacteria from pet wastes and failing septic systems;Soil from construction sites and other bare ground;Soaps from car or equipment washing; and.More items…•

What causes urban runoff?

Urban runoff is surface runoff of rainwater created by urbanization. This runoff is a major source of flooding and water pollution in urban communities worldwide. Impervious surfaces (roads, parking lots and sidewalks) are constructed during land development.

What is runoff and why is it 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.

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.

What is another word for runoff?

In this page you can discover 18 synonyms, antonyms, idiomatic expressions, and related words for runoff, like: flow, groundwater, rainfall, surplus water, spring runoff, snowmelt, siltation, aquifer, ground-water, surface-water and streamflow.

What is direct runoff?

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

How do you manage runoff?

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 one step you can take to keep runoff clean?

Wash your car on the lawn where the greasy water can be filtered by the soil or take your car to a commercial carwash where the dirty water is treat- ed properly. Dispose of used motor oil and antifreeze to recycling centers. Never put used oil down storm drains or in drainage ditches.