Rainfall characteristics

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Crop water need (mm/total growing period)

• Beans 300 - 500
• Citrus 900 - 1200
• Cotton 700 - 1300
• Groundnut 500 - 700
• Maize 500 - 800
• Sorghum/millet 450 - 650
• Soybean 450 - 700
• Sunflower 600 1000
• Reference FAO Irrigation Water Management
  Training Manual No. 3.

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(B)
Catchment area (in strips)
Cultivated area
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Catchment area x
Design rainfall x
Runoff coefficient
Cultivated area x (Crop water requirements -
Design rainfall) / Efficiency factor
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Demand 2(flash/people/day) 55 (people) 8 (lit/flash) 880(lit/day) Demand 2(flash/people/day) 55 (people) 8 (lit/flash) 880(lit/day) Demand 2(flash/people/day) 55 (people) 8 (lit/flash) 880(lit/day) Demand 2(flash/people/day) 55 (people) 8 (lit/flash) 880(lit/day)

Water Saving Effic. Used/Demand
Catchment(m2) 1500
Demend/day 0.88
Tank Volume 56
Runoff coeff. 0.75
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Water Saving Effic. Used/Demand
Catchment(m2) 1500
Demend/day 0.88
Tank Volume 56
Runoff coeff. 0.75
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