Precipitation Calculator

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Engineering	Civil ↺
Civil	Hydrology and Irrigation ↺
Hydrology-And-Irrigation	Precipitation ↺
Precipitation

✖Surface Runoff water, from rain, snowmelt, or other sources, that flows over the land surface, and is a major component of the water cycle. ⓘ Surface Runoff [S]			+10% -10%
✖Evaporation from water body (mm/day) is the process by which liquid water from an open water surface is converted directly to water vaporⓘ Evaporation from water body (mm/day) [E]			+10% -10%

✖Precipitation is the primary water input to the hydrologic cycle and is evaluated for all water budget calculations. ⓘ Precipitation [P]

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Mithila Muthamma PA

Coorg Institute of Technology (CIT), Coorg

Mithila Muthamma PA has created this Calculator and 400+ more calculators!

Chandana P Dev

NSS College of Engineering (NSSCE), Palakkad

Chandana P Dev has verified this Calculator and 400+ more calculators!

< 11 Other formulas that you can solve using the same Inputs

Water Budget Equation for a catchment considering time interval

Change in Mass Storage=Precipitation-Surface Runoff-Net Ground Water Flowing outside the Catchment-Evaporation from water body (mm/day) -Transpiration GO

Bowen’s Ratio

Bowen’s Ratio=Sensible heat transfer from water body/Water Density*Latent Heat of Evaporation*Evaporation from water body (mm/day) GO

Vapour Pressure of water at a given temperature when Evaporation given in Dalton's Law

Saturated Vapour Pressure of water=(Evaporation from water body (mm/day) /Proportionality Constant )+Vapour Pressure of Air GO

Vapour Pressure of air when Evaporation is given in Dalton's law

Vapour Pressure of Air=Saturated Vapour Pressure of water-(Evaporation from water body (mm/day) /Proportionality Constant ) GO

Heat Energy used up in Evaporation

Heat Energy used up in Evaporation=Water Density*Latent Heat of Evaporation*Evaporation from water body (mm/day) GO

The W – Index

W-Index=Precipitation-Surface Runoff-Depression and Interception Losses/Time Period of Runoff GO

Evaporation when Precipitation is known.

Evaporation from water body (mm/day) =Precipitation-Surface Runoff GO

Runoff when Precipitation is known.

Surface Runoff=Precipitation-Evaporation from water body (mm/day) GO

Total Runoff over a catchment

Runoff=Surface Runoff+Interflow+Baseflow+Channel Precipitation GO

Precipitation in Rainfall-runoff relationship

Precipitation=Surface Runoff+Runoff Losses GO

Runoff losses in rainfall-runoff relationship

Runoff Losses=Precipitation-Surface Runoff GO

< 11 Other formulas that calculate the same Output

Daily Precipitation from Water-Budget Continuity Equation

Precipitation=Daily Surface Outflow+Daily Seepage Outflow+Daily Lake Evaporation +Increase in Lake Storage in a Day+Daily Transpiration Loss-Daily Surface Inflow-Daily Groundwater Inflow GO

Precipitation when Runoff is Given from Exponential Relationship

Precipitation=(Runoff/Coefficient β in Logarithmic Transformation)^1/Coefficient m in Logarithmic Transformation GO

Precipitation when Runoff is Given in Straight-line regression between Runoff and Rainfall

Precipitation=(Runoff-Coefficient b in Straight-line regression )/Coefficient a in Straight-line regression GO

Precipitation when Change in Moisture Storage is Given

Precipitation=Change in Moisture Storage+Surface Runoff+Subsurface Outflow+Actual Evapotranspiration GO

Precipitation when Potential Maximum Retention is Given

Precipitation=(Surface Runoff*Potential Maximum Retention/Actual Infiltration)+Initial Abstraction GO

Water Balance Equation for Rainfall

Precipitation=Initial Abstraction+Cumulative Infiltration Capacity+Surface Runoff GO

Total Storm Precipitation when W-Index is Given

Precipitation=W-Index*Duration of Rainfall Excess+Runoff+Initial Abstraction GO

Precipitation when Total Runoff Depth is Given for Practical Use

Precipitation=Total Runoff Depth+Φ-Index*Duration of Rainfall Excess GO

Precipitation when Maximum Potential Runoff is Given

Precipitation=Maximum Potential Runoff+Initial Abstraction GO

Precipitation in Rainfall-runoff relationship

Precipitation=Surface Runoff+Runoff Losses GO

Precipitation when Runoff is Given for Ghat Regions of Western India

Precipitation=(Runoff+30.5)/0.85 GO

Precipitation Formula

Precipitation=Surface Runoff+Evaporation from water body (mm/day)
P=S+E

More formulas

Volume of Rainfall GO

Depth of Rainfall when Volume of Rainfall is given GO

Optimum number of Rain Gauge Stations GO

Dredge or Burge formula GO

Evaporation when Precipitation is known. GO

Runoff when Precipitation is known. GO

Total Runoff over a catchment GO

Statistical approach of PMP by using Chow’s equation GO

Radar Measurement of Rainfall GO

Radar Echo Factor When Intensity is Known GO

Intensity of Rainfall When Radar-Echo Factor is Known GO

Corrected Precipitation at any Time Period at Station 'X' GO

Original Recorded Precipitation when Corrected Precipitation at any Time Period is Given GO

Corrected Slope of the Double-Mass Curve GO

Original Slope of the Double-Mass Curve when Corrected Precipitation is Given GO

Correction Ratio in the Test for Consistency of Record GO

What is Precipitation?

Precipitation is rain, snow, sleet, or hail — any kind of weather condition where something's falling from the sky.

How to Calculate Precipitation?

Precipitation calculator uses Precipitation=Surface Runoff+Evaporation from water body (mm/day) to calculate the Precipitation, The Precipitation formula is defined as the sum of Surface Runoff and Evaporation over a specified catchment area. Precipitation and is denoted by P symbol.

How to calculate Precipitation using this online calculator? To use this online calculator for Precipitation, enter Surface Runoff (S) and Evaporation from water body (mm/day) (E) and hit the calculate button. Here is how the Precipitation calculation can be explained with given input values -> 108 = 0.1+0.008.

FAQ

What is Precipitation?

The Precipitation formula is defined as the sum of Surface Runoff and Evaporation over a specified catchment area and is represented as P=S+E or Precipitation=Surface Runoff+Evaporation from water body (mm/day) . Surface Runoff water, from rain, snowmelt, or other sources, that flows over the land surface, and is a major component of the water cycle. and Evaporation from water body (mm/day) is the process by which liquid water from an open water surface is converted directly to water vapor.

How to calculate Precipitation?

The Precipitation formula is defined as the sum of Surface Runoff and Evaporation over a specified catchment area is calculated using Precipitation=Surface Runoff+Evaporation from water body (mm/day) . To calculate Precipitation, you need Surface Runoff (S) and Evaporation from water body (mm/day) (E). With our tool, you need to enter the respective value for Surface Runoff and Evaporation from water body (mm/day) and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Precipitation?

In this formula, Precipitation uses Surface Runoff and Evaporation from water body (mm/day) . We can use 11 other way(s) to calculate the same, which is/are as follows -

Precipitation=Surface Runoff+Runoff Losses
Precipitation=Daily Surface Outflow+Daily Seepage Outflow+Daily Lake Evaporation +Increase in Lake Storage in a Day+Daily Transpiration Loss-Daily Surface Inflow-Daily Groundwater Inflow
Precipitation=Change in Moisture Storage+Surface Runoff+Subsurface Outflow+Actual Evapotranspiration
Precipitation=Total Runoff Depth+Φ-Index*Duration of Rainfall Excess
Precipitation=W-Index*Duration of Rainfall Excess+Runoff+Initial Abstraction
Precipitation=(Runoff/Coefficient β in Logarithmic Transformation)^1/Coefficient m in Logarithmic Transformation
Precipitation=(Runoff-Coefficient b in Straight-line regression )/Coefficient a in Straight-line regression
Precipitation=(Runoff+30.5)/0.85
Precipitation=Initial Abstraction+Cumulative Infiltration Capacity+Surface Runoff
Precipitation=Maximum Potential Runoff+Initial Abstraction
Precipitation=(Surface Runoff*Potential Maximum Retention/Actual Infiltration)+Initial Abstraction

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