7/11/2012 1 minimise water losses on demand
TRANSCRIPT
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“We never know the value ofWater
il h ll i d ”
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until the well is dry”(English saying)
Improving Water Use Efficiencyusing the
Water Administration System(WAS)
Nico Benadé
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24‐Jun‐2012
WRC research
Innovative research funded by the WRChas led to
the development and application ofthe
Water Administration System(WAS)
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( )
Main aim
Minimise water lossesfor
irrigation schemes
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gthat
distribute water through canal networks and rivers
on demand
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This is where it all started in 1984
64 kB RAM2 Single sided floppy disksWordstarSupercalc
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pdBaseTurbo Pascal
Osborne
Simulation model ‐ Procan
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“The optimization of the managementof
irrigation canal systems”
Simulation model ‐ Procan
After 5 years …We had a simulation model for open channel flowWe had a water ordering system feeding into ProcanWe received international recognition
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We received international recognitionI received my Masters degree
ButWe had no solution to the problem!
Release calculation idea
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Water Administration System (WAS)
d f
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An integrated management system for
Irrigation schemes
River systems
thatdelivers water on demand
Why implement WAS?
Improves scheme management
Improves financial management
Improves productivity
Saves water!
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WAS deployment sites
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Total area = 145 000 ha
Loskop Irrigation Scheme
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Tail ends
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Water ordered weekly
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Summary Farms = 656Abstractions = 794
Avg. farm size = 25.7 haWater year starts = April
Allocation/year = 7 700 m3/ha= 197 890 m3
Scheduled area = 16 135 haMain canal = 90km
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Administration office
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WAS modules
WAS makes use of nine moduleswhich are fully integrated,
making it possible to cross‐reference relevant data and information
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Admin
Water order Measureddata
Waterrelease
Crop wateruse
Accounts Report Daminformation
Bulk SMS
Water orders
Original
Additional
Cancellation
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Water orders
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Meter readings
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Measured data
Date & time flow data collected fromchart recorders
electronic loggers
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Data can be
captured
imported
digitized
Digitizing tablet
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Accounts
Generate monthly invoices linked towater usage or
scheduled area
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E‐mail invoices in pdf format
Water balance sheets
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Distribution sheets
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WUE Accounting report
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WUE Accounting report
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• Capture
• Capture,• Import or• Digitize
• Generate
Crop water use
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Release calculation
Calculate the correct amount of water
deliver to the right place &
at the right time
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Cross‐sections
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Release results
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Release results
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Release results
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Release results
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Bulk SMS’s
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Templates
WAS‐client
Scheme (WAS)
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Farm (WAS‐client)
Internet
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iScheme
Region (iScheme)
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Scheme (WAS)
Farm (WAS‐client)
Vaalharts WUA: 5% saving in 1 year
5% = 17.5 million m3
74 Farms of 25.7 ha each
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WAS website: www.nbsystems.co.za
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Compliments from farmer
Dear Sir,
…the WAS program is easy to understand andvery accurate…
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… I recommend that the WAS program mustbe used by all water departments…
The person that introduced this programmust be congratulated because it worksfantastic.
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ICID WatSave Award: 2007(Innovative Water Management)
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ICID WatSave Award: 2010(Innovative Water Management)
Kobus Harbron (Vaalharts Water): Head Water Control Officer.
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ICID WatSave Award(Innovative Water Management)
“for outstanding contribution to Water Savings andWater Conservation in Agriculture…”
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+ + 25 25 yryr ==