What is Surface Runoff & Drainage Area?
Surface runoff is water, from rain, snowmelt, or other sources, that flows over the land surface, and is a major component of the water cycle. Runoff that occurs on surfaces before reaching a channel is also called overland flow. A land area which produces runoff draining to a common point is called a watershed.
A Drainage area is the total surface area, upstream of a point on a stream, where the water from rain, snowmelt, or irrigation which is not absorbed into the ground flows over the ground surface, back into streams, to finally reach that point.
What is Peak Discharge & explain use of Runoff Coefficient?
The maximum rate of discharge during the period of runoff caused by a storm is called a peak flow. The information about peak flows and associated volume of runoff during various floods that have been observed in the past can be compiled by the analysis of the observed discharge data and runoff hydrographs.
Runoff coefficient is a dimensionless factor that is used to convert the rainfall amounts to runoff. It represents the integrated effect of catchment losses and hence depends upon the nature of the land surface, slope, degree of saturation, and rainfall intensity. It is a larger value for areas with low infiltration and high runoff (pavement, steep gradient), and lower for permeable, well-vegetated areas (forest, flat land).
How to Calculate Intensity of Precipitation when Peak Discharge for Field Application is Considered?
Intensity of Precipitation when Peak Discharge for Field Application is Considered calculator uses Mean Intensity of Precipitation = Peak Discharge/((1/3.6)*Runoff Coefficient*Drainage Area) to calculate the Mean Intensity of Precipitation, The Intensity of Precipitation when Peak Discharge for Field Application is Considered Rainfall formula is defined as the ratio of the total amount of rain (rainfall depth) falling during a given period to the duration of the period. Mean Intensity of Precipitation is denoted by itcp symbol.
How to calculate Intensity of Precipitation when Peak Discharge for Field Application is Considered using this online calculator? To use this online calculator for Intensity of Precipitation when Peak Discharge for Field Application is Considered, enter Peak Discharge (Qp), Runoff Coefficient (Cr) & Drainage Area (AD) and hit the calculate button. Here is how the Intensity of Precipitation when Peak Discharge for Field Application is Considered calculation can be explained with given input values -> 2.1E+7 = 4/((1/3.6)*0.5*18000000).