national irrigation database how much water is required, and when how much water was applied, and...
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National Irrigation Database
•How much water is required, and when
•How much water was applied, and when
•How much excess water was used
A national irrigation database would contain data about...
...for every field in Australia
National Irrigation Database
• A great deal of detailed data is required.
• Some data is already being collected, if only it was available...
• How do we get the rest of the data ?
Google Maps could be the inspiration
Irrigators do the collecting
Existing data
• Water orders to Water Supply Authority
• Irrigation schedules calculated by irrigators
• Soil moisture measurements
If this data was also on the web it could be used by a national database
Google maps and Google Earth
• Defined an xml schema for GIS data.
• A data format that can be shared.
• Data in a file in this format can be shown on a map or aerial photograph.
• Water orders can also be read from the same file.
• A National Irrigation Database can read the same file.
Irrigator sends water order to Water Supply Authority
Amount+Date
phone/fax/email/webWater Supply
IrrigatorAuthority
What happens now
Irrigator enters order on web form
shedule.kml
Amount+Date
Irrigator calculatesAmount+Date
Irrigator
Water Supply
Web form to enterwater order
PC/ PDA/mobile/SMS
Orders via the web
What the Water Supply Authority would see
• Paul Torzillo requires 55 Ml on 13 February
• McWilliams requires 32 Ml on 12 February
What the National Database will see
FarmID SiteID Required(Ml)
Date DWU(mm/day)
7104 1 32.5 11 Feb 2007 3.6
7104 2 41.0 23 Feb 2007 4.5
7104 3 22.5 13 Feb 2007 4.3
7104 7 19.5 25 Feb 2007 3.7
7104 21 35.6 26 Feb 2007 3.5
What the irrigator would see
Irrigators who do not need to order water
shedule.xml
Amount+Date
Irrigator calculatesAmount+Date
Irrigator
Web form to enter wateramounts and dates
PC/ PDA/mobile
What the irrigator and Water Authority would see
Web form could also calculate water requirements
shedule.kml
Amount+Date
Irrigator
Web form calculates wateramounts and dates
crop water usefrom BOM
or weather stations
PC | PDA | mobile
Irrigators who measure soil moisture
web page
schedule.kml
Amounts+dates
Irrigator Consultant
Amount+date
Map page Scheduling software
What the irrigator and Water Authority would see
Soil moisture by telemetry to Water Authority
web page
schedule.kml
Amounts+dates
Irrigator
Amount+date Map pageScheduling software
Water Supply
radio/telemetry
What the irrigator and Water Authority would see
Using Google xml schema
• A standard format is required• The suggested format is the xml schema
used by Google Maps and Google Earth• This schema defines how data should be
formatted for GIS mapping• XML is extremely flexible• Standard interchange format for data on the
internet
Additional data
• XML is flexible - add extra data items
• Volume_Required, Date_Required
• Crop_Type, Daily_Water_Use
• Soil_Moisture_Status
• Total amount of water required by the end of the season
How the system would workNationalIrrigation Database
Amount, Date, DWU
schedule.kml
Irrigator Consultant
Water Supply
Google map
Web page
Web form
amounts and dates
crop water usefrom BOM
or weather stations
calculates water
Schedulingsoftware
Authority
What is required - XML schema
• Required_Volume (cu m)
• Required_Date
• Current_Soil_Moisture (mm)
• Crop_Daily_Water_Use (mm/day)
• Season Total_Volume_Required (cu m)
• Crop_Type
• GPS coordinates
What needs to be done
1 Web form for Irrigators to order water. Can also be used to calculate and post irrigation schedule.
2 Crop water use data to be available on the web in an agreed standard format.
3 Water Supply Authorities to be able to read and accept water orders in the agreed xml schema.
4 All irrigation scheduling software to output a schedule in the agreed xml schema.
5 A national irrigation database could then be set up that would also read the xml files.
National Irrigation Database
really quite simple
and achievable
Just calculations next...
Calculating water required: drip
amount required over next 7 days
Refill - driest below which plant is stressed
measuredsoil moisture
target moisture content
to maintain target moisture
Calculating water required: flood
amount required to bring back to full
Full - maximum water holding capacity
Refill - driest below which plant is stressed
measuredsoil moisture
rate moisture is falling date water should be applied
Calculating water required
amount required = crop water use * 7 days
Full point - maximum water holding capacity
Refill point - driest below which the plant is stressed
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