Tip

  1. Need help? Please let us know in the UMEP Community.

  2. Please report issues with the manual on the GitHub Issues.

  3. Please cite SUEWS with proper information from our Zenodo page.

2.2.4. 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 by setting WaterUseMethod = 1 in RunControl.nml

  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