Rain m (Water Overlay)

Icon	Key	Unit	Range	Description	Default value
	RAIN_M	end-time, m		An array of values, each pair indicating until what time that period of rain will last and how much rain will fall in that period.	n/a

Single rain value to Rain Array

When only one value is provided, it will be internally converted to a rain array.

For example: when an area has a rain attribute defined with a value of 0.040 (m), and the total simulation time defined by the weather is 10 hours, it is converted to the array: 36000 0.040. This means that a total of 0.04 m (40 mm) of rain will fall, evenly spread over 36000 seconds (10 hours).

When you want the rain to fall in a shorter time period, for example the first hour, you would have to write: 3600 0.04 Also note that you can delay the rain , with for example 1200 0 3600 0.04, where the first 20 minutes no rain will fall and in the 40 minutes after it, 40 mm will fall.

Notes

• A maximum of 10.000 values (5.000 pairs) can be defined.
• If the total simulation time extends beyond the final time definition of this Attribute, then for the remainder of the simulation the amount of rainfall in the Rain Area will be 0.

See also

• Rain area (Water Overlay)
• Weather rain m (Water Overlay)

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Water Module

Water Module

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Overview

Theory

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Group

Hydrological features

Water area

Water level • Water relative

Sewer area

Sewer storage • Sewer pump speed

Inundation area

Inundation level

Aquifer

Aquifer kd • Aquifer datum

Breach

Breach height • Breach width • Breach angle • Breach coefficient • Breach speed • Breach input area • Breach level area • External surface level • External water level • External area

Rain area

Rain m

Limitation area

Limit area

Output

Object flow output • Object height output • Object datum output a • Object datum output b • Object width output

Related

Building attributes • Hydraulic structures •  Terrain attributes • Model attributes • Results • Simulation data