What Are The Factor Affecting Run Off?

Type of precipitation (rain, snow, sleet, etc.) Rainfall intensity. Rainfall amount. Rainfall duration.

What is run off explain in brief Factors Affecting run off?

 Runoff depends on the intensity of rainfall .  More the rainfall, more will be runoff.  If the rainfall intensity is very less and it rains as light showers then much of the water will be lost in infiltration & evaporation resulting less runoff.  If precipitation is in case of snow then less runoff.

What are the factors that affects the page and run off?

• Types of Precipitation: It has great effect on the runoff. ...
• Rainfall Intensity: If the rainfall intensity is greater than infiltration rate of soil then runoff starts immediately after rainfall. ...
• Duration of Rainfall: ...
• Rainfall Distribution: ...
• Direction of Prevailing Wind: ...
• Other Climate Factor:

What is run off what are the factors that affect the run off from a catchment area describe the methods of computing run off from a catchment area?

The more the rainfall, the more will be the runoff. Runoff depends on the type of the storm causing precipitation, and also upon its duration. Runoff also increases with the intensity of rainfall and with the extent of the storm over the catchment. ... Thus, the runoff will be less.

What are the factors affecting of runoff?

Meteorological factors affecting runoff:

Rainfall intensity . Rainfall amount . Rainfall duration . Distribution of rainfall over the watersheds .

What are the five factors that affect runoff?

Watershed factors affecting runoff are land slope, shape, soil, and land use . The principal effect of land slope is on the rate of runoff.

How do you reduce runoff?

1. Disconnect/Redirect Downspouts.
2. Use a rain barrel to capture rain from your roof.
3. Plant a rain garden.
4. Plant trees.
5. Reduce impervious surfaces; install permeable pavement.
6. Plant a green roof.

What are the factors affecting hydrograph?

• Shape. A circular shaped drainage basin leads to rapid drainage whereas a long drainage basin will take time for the water to reach the river.
• Topography & relief. ...
• Heavy Storms. ...
• Lengthy rainfall. ...
• Snowfall. ...
• Vegetation. ...
• Rock type.

What are the factors affecting duty?

• Soil Characteristics: If the soil of the canal bed is porous and coarse grained, it leads to more seepage loss and consequently low duty. ...
• Climatic Condition: ...
• Rainfall: ...
• Base Period: ...
• Type of Crop: ...
• Topography of Agricultural Land: ...
• Method of Ploughing: ...
• Methods of Irrigation:

What are the three types of runoff?

There are three major types of runoff depending on the source: surface flow, interflow, and base flow .

What are the factors affecting runoff hydrograph?

In addition to the spatial and temporal characteristics of rainfall, the physical features of the watershed also control the shape of the runoff hydrograph. Factors affecting the hydrograph include: drainage area, slope, roughness, storage, drainage density, channel length, and antecedent moisture conditions .

What’s an example of runoff?

Runoff is defined as excess water draining away from land or buildings. The overflow of water that drains off of your driveway is an example of runoff.

What would cause an increase in surface runoff?

Urbanization increases surface runoff, by creating more impervious surfaces such as pavement and buildings do not allow percolation of the water down through the soil to the aquifer . It is instead forced directly into streams, where erosion and siltation can be major problems, even when flooding is not.

How the run off can be estimated?

The measurement of runoff, in the field, is generally carried out using current meters and calibrated or rated channel cross sections, flumes or standardized weirs, together with water level readings, often by automatic recorders, to give a continuous height record which can be correlated to flow.

What is the most common method for the estimation of runoff?

The most common method of calculating the amount of rainfall converted to runoff is the SCS Curve Number (CN) Method , originally presented in the National Engineering Handbook, Section 4 (NEH-4).

How is surface run off calculated?

Direct Runoff Formula

For a given surface area such as a roof or yard, multiply the area by the inches of rainfall and divide by 231 to obtain the runoff in gallons. The factor 231 comes from the fact that the volume of 1 gallon equals 231 cubic inches.