Note

Please report issues with the manual on the GitHub page.

4.2.4. SUEWS_Irrigation.txt

External water use may be used for a wide range of reasons (e.g. cleaning roads, irrigating plants, fountains, washing cars).

SUEWS has two options for External Water use (if non- zero) 1) provide observed data in meteorological forcing file in the Wuh column with valid values

2) a simple model that calculates daily water use from the mean daily air temperature, number of days since rain and fraction of irrigated area using automatic/manual irrigation. The user needs to supply coefficients (XXX) for these relations.

  1. sub-daily pattern of water use is detemined from the daily cycles specified in SUEWS_Profiles.txt.

  2. surface that the water can be applied to is specified by XX.

  3. water can pond

No.

Column Name

Use

Description

1

Code

L

Code linking to a corresponding look-up table.

2

Ie_start

MU

Day when irrigation starts [DOY]

3

Ie_end

MU

Day when irrigation ends [DOY]

4

InternalWaterUse

MU

Internal water use [mm h-1]

5

Faut

MU

Fraction of irrigated area that is irrigated using automated systems

6

H_maintain

MU

water depth to maintain used in automatic irrigation (e.g., ponding water due to flooding irrigation in rice crop-field) [mm].

7

Ie_a1

MD

Coefficient for automatic irrigation model [mm d-1 ]

8

Ie_a2

MD

Coefficient for automatic irrigation model [mm d-1 K-1]

9

Ie_a3

MD

Coefficient for automatic irrigation model [mm d-2 ]

10

Ie_m1

MD

Coefficient for manual irrigation model [mm d-1 ]

11

Ie_m2

MD

Coefficient for manual irrigation model [mm d-1 K-1]

12

Ie_m3

MD

Coefficient for manual irrigation model [mm d-2 ]

13

DayWat(1)

MU

Irrigation allowed on Sundays [1], if not [0]

14

DayWat(2)

MU

Irrigation allowed on Mondays [1], if not [0]

15

DayWat(3)

MU

Irrigation allowed on Tuesdays [1], if not [0]

16

DayWat(4)

MU

Irrigation allowed on Wednesdays [1], if not [0]

17

DayWat(5)

MU

Irrigation allowed on Thursdays [1], if not [0]

18

DayWat(6)

MU

Irrigation allowed on Fridays [1], if not [0]

19

DayWat(7)

MU

Irrigation allowed on Saturdays [1], if not [0]

20

DayWatPer(1)

MU

Fraction of properties using irrigation on Sundays [0-1]

21

DayWatPer(2)

MU

Fraction of properties using irrigation on Mondays [0-1]

22

DayWatPer(3)

MU

Fraction of properties using irrigation on Tuesdays [0-1]

23

DayWatPer(4)

MU

Fraction of properties using irrigation on Wednesdays [0-1]

24

DayWatPer(5)

MU

Fraction of properties using irrigation on Thursdays [0-1]

25

DayWatPer(6)

MU

Fraction of properties using irrigation on Fridays [0-1]

26

DayWatPer(7)

MU

Fraction of properties using irrigation on Saturdays [0-1]

An example SUEWS_Irrigation.txt can be found below:

1     	 2        	 3      	 4                	 5    	 6       	 7     	 8     	 9      	 10    	 11    	 12        	 13        	 14        	 15        	 16        	 17        	 18        	 19           	 20           	 21           	 22           	 23           	 24           	 25
Code  	 Ie_start 	 Ie_end 	 InternalWaterUse 	 Faut 	 Ie_a1   	 Ie_a2 	 Ie_a3 	 Ie_m1  	 Ie_m2 	 Ie_m3 	 DayWat(1) 	 DayWat(2) 	 DayWat(3) 	 DayWat(4) 	 DayWat(5) 	 DayWat(6) 	 DayWat(7) 	 DayWatPer(1) 	 DayWatPer(2) 	 DayWatPer(3) 	 DayWatPer(4) 	 DayWatPer(5) 	 DayWatPer(6) 	 DayWatPer(7)
99999 	 1        	 366    	 0                	 0    	 0       	 0     	 0     	 0      	 0     	 0     	 0         	 0         	 0         	 0         	 0         	 0         	 0         	 0            	 0            	 0            	 0            	 0            	 0            	 0 ! No        irrigation
1     	 152      	 243    	 0                	 0.2  	 -84.535 	 9.959 	 3.674 	 -25.36 	 2.988 	 1.102 	 1         	 1         	 1         	 1         	 1         	 1         	 1         	 1            	 1            	 1            	 1            	 1            	 1            	 1
550   	 1        	 366    	 0                	 0    	 0       	 0     	 0     	 0      	 0     	 0     	 0         	 0         	 0         	 0         	 0         	 0         	 0         	 0            	 0            	 0            	 0            	 0            	 0            	 0 ! Swindon 	 "(not        used,   no           irrigation)"
660   	 1        	 366    	 0                	 0    	 0       	 0     	 0     	 0      	 0     	 0     	 0         	 0         	 0         	 0         	 0         	 0         	 0         	 0            	 0            	 0            	 0            	 0            	 0            	 0 ! London  	 (assume      no      irrigation   at             the   moment)
-9
-9