Sponsored by Causes of Water Waste Mike Baron Toro Irrigation.
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Transcript of Sponsored by Causes of Water Waste Mike Baron Toro Irrigation.
Sponsored by
Causes of Water WasteMike Baron
Toro Irrigation
Sponsored by
18% - 20% CA Electricity Used To Pump or Treat Water
The Water-Energy NEXUS
Sponsored by
We Don’t Want To See. We Can’t Afford.
Sponsored by
Sprinklers
RunoffSoil
Infiltration
Coarse Sand .75”-1”/hr.
Fine Sand .5”-.75”
Fine Sandy Loam .35”-.5”
Silt Loam .15”-.4”
Clay Loam .1”-.2”
Conventional Spray 1.58”/HRToro Precision Sprays 1.00”/HRFixed Arc Rotating Nozzle 0.75”/HRToro Precision Rotating 0.55”/HRHunter MP Rotator: 0.39”/HR
Intake Rates vs. Application Rates
5Sponsored by
What Causes This Water Waste?
• Runoff?– High application rate?
– Excessive run times?– Overspray? – Leaking sprinkler
seals?– Non-plumb heads? – Wind?– Controller problem?– Valve stuck on?
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• Ponding– Excessive run times?– Low head drainage?– High application rate?– Controller problem?– Valve stuck on?
What Causes This Water Waste?
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Low Head Drainage – Silent & Costly
• Elevation Change– Between valve & heads– Water flows down hill
• HOA– 19,000 heads– 250,000’+ pipe
• 1” PVC Assumption– 4 cycles per day– 4,363.6 units/month
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Slope & High Application Rates
What Causes This Water Waste?
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The irrigation system shall be designed to prevent runoff, low head drainage, overspray, or other similar conditions where irrigation water flows onto non-targeted areas, such as adjacent property, non-irrigated areas, hardscapes, roadways or structures.
MWELO – AB1881?
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High Pressure Misting
Compounded Waste From Windrift
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Pressure Gauge Kit
• PSI Is Important– Static vs. Dynamic– High PSI Waste– Low PSI Waste
• Manufacturer Specs– Sprays– Rotors– Bubblers– Drip
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MWELO – AB1881
The irrigation system shall be designed to ensure that the dynamic pressure at each emission device is within the manufacturer’s recommended pressure range for optimal performance.
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MPR = Matched Precipitation Rate
90°
ARC Rate
Precipitation
0.99”/hr
180°
0.49”/hr
360°
0.25”/hr
Performance Factors
• 2.0 gpm nozzle
• 30’ radius
1”
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Before Radius Adjustment Precip =
0.49”/hr
After 5’ Radius Reduction Precip =
0.71”/hr% Change: 44.9%
Radius Reduction & MPR
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Avoid Mixing Sprinkler Types
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Is This Water Waste?
Mixing Sprinkler Types Guarantees Either Over Watering Or Severe Stress
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WEATHER = ET (inches)
Tempº
Solar RadiationHumidity Wind
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC TTL
2.2 2.7 3.7 4.7 5.5 5.8 6.2 5.9 5.0 3.9 2.6 1.9 50.1
Monthly ET For Los Angeles, CA
35.5% 43.5% 59.7% 75.8% 88.7% 93.5% 100% 95.2% 80.6% 62.9% 41.9% 30.6%
Monthly Water Budget %
The Impact of Weather
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Weather-based irrigation controllers or soil moisture-based controllers or other self-adjusting irrigation controllers shall be required for irrigation scheduling in all irrigation systems.
Commercial Models
• 12, 24, 36 & 48 Stations
• Flow Sensing
• SWAT Tested & Approved
• No Weather Station Installation/Maintenance Required
Residential Models
• 6, 9, 12 & 24 Stations
• SWAT Tested & Approved
• No Weather Station Installation/Maintenance Required
MWELO – AB1881
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High flow sensors that detect and report high flow conditions created by system damage or
malfunction are recommended.
MWELO – AB1881
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• The irrigation system shall be designed to prevent runoff, low head drainage, overspray, or other similar conditions where irrigation water flows onto non-targeted areas, such as adjacent property, non-irrigated areas, hardscapes, roadways or structures.
MWELO – AB1881
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You Don’t Have To Change.
Survival Is Not Mandatory.
Edward S. Deming