NATIONAL IRRIGATION ADMINISTRATION

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• NATIONAL IRRIGATION ADMINISTRATION
• EDSA, Diliman, Quezon City, Philippines

WATER ALLOCATION BETWEEN IRRIGATION AND MUNICIPAL
USE (INWEPF 4th Steering Meeting and Symposium)

By DOMINADOR D. PASCUA Manager, Corporate
Planning Staff
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Philippines Water Resources Regions
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• Water Balance 2005

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• Water Balance 2025

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Water Resources Regions 3 4
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Location of Angat Dam, AMRIS and Metro Manila,
other potential water sources
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Water Rights Allocation in Angat Reservoir
15 cms may be taken from the 36 cms allocation
of NIA as conditional allocation to MWSS in
emergencies
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Operation rule in Angat Reservoir

• Upper rule curve water level gt 212 m
• Municipal water supply, irrigation demands,
  instream river flow requirements satisfied
• Power generated at capacity of hydropower plants
• Lower rule curve water level lt 180 m
• Municipal water supply satisfied first
• Power generation linited to releases made from
  auxiliary hydropower plants
• Irrigation water maybe reduced and satisfied by
  whatever water remains from the reservoir or
  obtainable from local inflows
• Between the upper and lower rule curves water
  level 212 m to 180 m
• Municipal water supply and irrigation demands
  satisfied
• Power generation limited to releases for
  municipal water supply and irrigation

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Consequences of realloction in AMRIS
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Compensation Claims
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Conclusions

• The Water Code does not provide clear guidelines
  on the Compensation for water reallocated
• Means to meet Metro Manilas increasing demand
  for municipal water
• Develop new sources
• Improve water use efficiency

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Thank you and good day.