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Rainfall Runoff Relationship Formula

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The Surface Runoff refers to the unconfined flow of water over the ground surface. Check FAQs

S r = P - L

S_r - Surface Runoff?P - Precipitation?L - Runoff Losses?

Rainfall Runoff Relationship Example

With values

With units

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Here is how the Rainfall Runoff Relationship equation looks like with Values.

Here is how the Rainfall Runoff Relationship equation looks like with Units.

Here is how the Rainfall Runoff Relationship equation looks like.

0.05 = 50 - 49.95

0.05m³/s = 50mm - 49.95m³

0.05 = 50 - 49.95

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Rainfall Runoff Relationship Solution

Follow our step by step solution on how to calculate Rainfall Runoff Relationship?

FIRST Step Consider the formula

S r = P - L

Next Step Substitute values of Variables

∴

S r = 50mm - 49.95m³

Next Step Prepare to Evaluate

∴

S r = 50 - 49.95

Next Step Evaluate

∴

S r = 0.0499999999999972m³/s

LAST Step Rounding Answer

∴

S r = 0.05m³/s

Rainfall Runoff Relationship Formula Elements

Variables

Surface Runoff

The Surface Runoff refers to the unconfined flow of water over the ground surface.

Symbol: S_r

Measurement: Volumetric Flow RateUnit: m³/s

Note: Value should be greater than 0.

Formulas to find Surface Runoff

Precipitation

The Precipitation refers to the primary water input to the hydrologic cycle and is evaluated for all water budget calculations.

Symbol: P

Measurement: LengthUnit: mm

Note: Value can be positive or negative.

Formulas to find Precipitation

Runoff Losses

The Runoff Losses refers to the water that is not available to runoff due to infiltration, evaporation, transpiration and surface storage.

Symbol: L

Measurement: VolumeUnit: m³

Note: Value should be greater than 0.

Formulas to find Runoff Losses

Other formulas in Water Budget Equation for a Catchment category

Go Mass Outflow given Change in Mass Storage

V o = Q - Δs

Go Catchment Area given Peak Discharge in Jarvis formula

A = {(\frac{Q p}{C})}^{2}

Go Surface Water Storage given Storage of Water in Catchment

ΔSs = S - ΔSm - ΔS

Go Soil Moisture Storage given Storage of Water

ΔSm = S - ΔSs - ΔS

How to Evaluate Rainfall Runoff Relationship?

Rainfall Runoff Relationship evaluator uses Surface Runoff = Precipitation-Runoff Losses to evaluate the Surface Runoff, The Rainfall Runoff Relationship formula is defined by the parameters of precipitation and losses L i.e. water not available to runoff due to infiltration, evaporation, transpiration and surface storage. Surface Runoff is denoted by S_r symbol.

How to evaluate Rainfall Runoff Relationship using this online evaluator? To use this online evaluator for Rainfall Runoff Relationship, enter Precipitation (P) & Runoff Losses (L) and hit the calculate button.

FAQs on Rainfall Runoff Relationship

What is the formula to find Rainfall Runoff Relationship?

The formula of Rainfall Runoff Relationship is expressed as Surface Runoff = Precipitation-Runoff Losses. Here is an example- 0.05 = 0.05-49.95.

How to calculate Rainfall Runoff Relationship?

With Precipitation (P) & Runoff Losses (L) we can find Rainfall Runoff Relationship using the formula - Surface Runoff = Precipitation-Runoff Losses.

Can the Rainfall Runoff Relationship be negative?

No, the Rainfall Runoff Relationship, measured in Volumetric Flow Rate cannot be negative.

Which unit is used to measure Rainfall Runoff Relationship?

Rainfall Runoff Relationship is usually measured using the Cubic Meter per Second[m³/s] for Volumetric Flow Rate. Cubic Meter per Day[m³/s], Cubic Meter per Hour[m³/s], Cubic Meter per Minute[m³/s] are the few other units in which Rainfall Runoff Relationship can be measured.

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