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Critical Rainfall Intensity for Peak Rate of Runoff Formula

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Critical Rainfall Intensity is the precipitation rate at which surface runoff initiates, leading to increased risk of flooding or other hydrological hazards. Check FAQs

P c = \frac{36 \cdot Q R}{A c \cdot C r}

P_c - Critical Rainfall Intensity?Q_R - Peak Drainage Discharge by Rational Formula?A_c - Area of Catchment?C_r - Runoff Coefficient?

Critical Rainfall Intensity for Peak Rate of Runoff Example

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Here is how the Critical Rainfall Intensity for Peak Rate of Runoff equation looks like with Values.

Here is how the Critical Rainfall Intensity for Peak Rate of Runoff equation looks like with Units.

Here is how the Critical Rainfall Intensity for Peak Rate of Runoff equation looks like.

2 = \frac{36 \cdot 4166.67}{15 \cdot 0.5}

2cm/h = \frac{36 \cdot 4166.67m³/s}{15ha \cdot 0.5}

2 = \frac{36 \cdot 4166.67}{15 \cdot 0.5}

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Critical Rainfall Intensity for Peak Rate of Runoff Solution

Follow our step by step solution on how to calculate Critical Rainfall Intensity for Peak Rate of Runoff?

FIRST Step Consider the formula

P c = \frac{36 \cdot Q R}{A c \cdot C r}

Next Step Substitute values of Variables

∴

P c = \frac{36 \cdot 4166.67m³/s}{15ha \cdot 0.5}

Next Step Convert Units

∴

P c = \frac{36 \cdot 4166.67m³/s}{150000m² \cdot 0.5}

Next Step Prepare to Evaluate

∴

P c = \frac{36 \cdot 4166.67}{150000 \cdot 0.5}

Next Step Evaluate

∴

P c = 5.55556E-06m/s

Next Step Convert to Output's Unit

∴

P c = 2.0000016cm/h

LAST Step Rounding Answer

∴

P c = 2cm/h

Critical Rainfall Intensity for Peak Rate of Runoff Formula Elements

Variables

Critical Rainfall Intensity

Critical Rainfall Intensity is the precipitation rate at which surface runoff initiates, leading to increased risk of flooding or other hydrological hazards.

Symbol: P_c

Measurement: SpeedUnit: cm/h

Note: Value should be greater than 0.

Formulas to find Critical Rainfall Intensity

Peak Drainage Discharge by Rational Formula

The Peak Drainage Discharge by Rational Formula estimates stormwater runoff using parameters such as rainfall intensity, catchment area, and runoff coefficient to determine the maximum flow rate.

Symbol: Q_R

Measurement: Volumetric Flow RateUnit: m³/s

Note: Value should be greater than 0.

Formulas to find Peak Drainage Discharge by Rational Formula

Area of Catchment

Area of Catchment refers to the area of land where all water flows to a single stream, river, lake or even ocean.

Symbol: A_c

Measurement: AreaUnit: ha

Note: Value can be positive or negative.

Formulas to find Area of Catchment

Runoff Coefficient

Runoff Coefficient is a dimensionless coefficient relating the amount of runoff to the amount of precipitation received.

Symbol: C_r

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Runoff Coefficient

Other formulas in Peak Drainage Discharge by Rational Formula category

Go Peak Rate of Runoff in Rational Formula

Q R = \frac{C r \cdot A c \cdot P c}{36}

Go Coefficient of Runoff given Peak Rate of Runoff

C r = \frac{36 \cdot Q R}{A c \cdot P c}

Go Catchment Area given Peak Rate of Runoff and Rainfall Intensity

A c = \frac{36 \cdot Q R}{C r \cdot P c}

How to Evaluate Critical Rainfall Intensity for Peak Rate of Runoff?

Critical Rainfall Intensity for Peak Rate of Runoff evaluator uses Critical Rainfall Intensity = (36*Peak Drainage Discharge by Rational Formula)/(Area of Catchment*Runoff Coefficient) to evaluate the Critical Rainfall Intensity, The Critical Rainfall Intensity for Peak Rate of Runoff formula is defined the intensity is essential for accurate peak discharge estimation, which is crucial for designing effective storm water management systems and mitigating flood risks. Critical Rainfall Intensity is denoted by P_c symbol.

How to evaluate Critical Rainfall Intensity for Peak Rate of Runoff using this online evaluator? To use this online evaluator for Critical Rainfall Intensity for Peak Rate of Runoff, enter Peak Drainage Discharge by Rational Formula (Q_R), Area of Catchment (A_c) & Runoff Coefficient (C_r) and hit the calculate button.

FAQs on Critical Rainfall Intensity for Peak Rate of Runoff

What is the formula to find Critical Rainfall Intensity for Peak Rate of Runoff?

The formula of Critical Rainfall Intensity for Peak Rate of Runoff is expressed as Critical Rainfall Intensity = (36*Peak Drainage Discharge by Rational Formula)/(Area of Catchment*Runoff Coefficient). Here is an example- 720000.6 = (36*4166.67)/(150000*0.5).

How to calculate Critical Rainfall Intensity for Peak Rate of Runoff?

With Peak Drainage Discharge by Rational Formula (Q_R), Area of Catchment (A_c) & Runoff Coefficient (C_r) we can find Critical Rainfall Intensity for Peak Rate of Runoff using the formula - Critical Rainfall Intensity = (36*Peak Drainage Discharge by Rational Formula)/(Area of Catchment*Runoff Coefficient).

Can the Critical Rainfall Intensity for Peak Rate of Runoff be negative?

No, the Critical Rainfall Intensity for Peak Rate of Runoff, measured in Speed cannot be negative.

Which unit is used to measure Critical Rainfall Intensity for Peak Rate of Runoff?

Critical Rainfall Intensity for Peak Rate of Runoff is usually measured using the Centimeter per Hour[cm/h] for Speed. Meter per Second[cm/h], Meter per Minute[cm/h], Meter per Hour[cm/h] are the few other units in which Critical Rainfall Intensity for Peak Rate of Runoff can be measured.

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Critical Rainfall Intensity for Peak Rate of Runoff Formula

Critical Rainfall Intensity for Peak Rate of Runoff Example

Critical Rainfall Intensity for Peak Rate of Runoff Solution

Critical Rainfall Intensity for Peak Rate of Runoff Formula Elements

Other formulas in Peak Drainage Discharge by Rational Formula category

How to Evaluate Critical Rainfall Intensity for Peak Rate of Runoff?

FAQs on Critical Rainfall Intensity for Peak Rate of Runoff

Variable Name