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Water Resources Demand Management at the National Level [Philippines]

Water Resources Demand Management at the National Level [Philippines]. 1. Conditions and Strategies in Demand Management. a. Demand Situation. Irrigation Development Perspective. Include small scale irrigation systems SSISs) Inconsistent irrigation development data. a. Demand Situation.

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Water Resources Demand Management at the National Level [Philippines]

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  1. Water Resources Demand Management at the National Level [Philippines]

  2. 1. Conditions and Strategies in Demand Management

  3. a. Demand Situation • Irrigation Development Perspective Include small scale irrigation systems SSISs) Inconsistent irrigation development data

  4. a. Demand Situation • Cropping Pattern Enrichment Increase cropping intensity Set wet-to-wet interlap

  5. b. Demand Forecasts • Rice Self-Sufficiency Requirement NIA’s share is 36 percent of the total increase in palay production within the critical period

  6. b. Demand Forecasts • Water Appropriation Competition Sectors Agriculture Residential Commercial Industrial Demand Growing Extent Expanding Coverage Growing Competition Supply Diminishing Quantity Quality Deterioration Factors Growing Demand Climate Change Watershed Denudation Rainfall Occurrence Rainfall Intensity Streamflow Pattern

  7. c. Adaptation Measures • Irrigation Performance Amplification Generate and restore serviceable area Increase cropping intensity and crop yield

  8. c. Adaptation Measures • Farming System Upgrading Component practices now familiar with farmers Adoption is however still fragmental

  9. d. Mitigation Measures • Rotational Water Distribution Alleviates water shortage Improves water productivity

  10. e. Response Plans • Quick-Resulting Projects Most critical period is 2011 – 2012 Prioritize mono-year projects

  11. e. Response Plans • Human Resource Strengthening Institutional Reform Agency Rationalization Five-Year Plan Ending 2012 Experienced Staff Retired Needed Action Train Staff Intervening Scenario Rice Self-Sufficiency Roadmap Unprecedented Workload Needed Action Increase Staff Train Staff

  12. f. Recovery Plans • Programs Convergence Initiative Agencies Converging Agriculture Environment Public Works Focus Concerns Rice Areas Flood Control Watershed Reforestation • Pumping Operations Subsidization Operations Constraint High O&M Cost Low Paying Capacity Unsustainable Operations Remedial Measures Halved ISF Rate NIA gets Subsidy NIA revisits Strategies

  13. 2. Policies and Programs in Demand Management

  14. a. National Policies • Water Appropriation Prioritization Water Prioritization P-1: Water Supply P-2: Power Generation P-3: Irrigation Supply Dedicated Source Water Rights Upstream Diversion Beneficiary Shift Sound Decision • Hydraulic Regulation Improvement Existing Phenomenon Water Superfluity US Water Deficit MS Water Deprivation DS Remedial Measure Standard Weir: Cross Regulator Notched Weir: Offtake Intake Caps Allowable Discharge

  15. b. National Programs • Irrigation System Modernization Transfers water management to canal structures Makes irrigation systems self-diagnostic

  16. b. National Programs • Public Private Partnership Execution Investment Counterparting Dam Aspect Only Targets Multipurpose Dams 4 Projects in Pipeline Allure Power Plants Trimmed Investment Accelerate Development Complement Resource Purpose

  17. 3. Lessons and Practices in Demand Management

  18. a. Lesson Learned • Pump Irrigation Profitability Situation High &M Cost Halved ISF Rate Subsidized Cost Uncertainty Subsidy Stoppage Low ISF Collections Operations Sustainability Impact Dries Up Hand Pumps Advocacy PISs at Lower Priority PISs for Water Augmentation Aquifer for Water Supply

  19. 4. Challenges and Needs in Demand Management

  20. a. Management Challenges • Rank #1 - Diminishing Water Supply Diminishing water supply vs. Growing water demand • Rank #2 - Balding Irrigation Watersheds Severe water regimes and rising silt load cut irrigation performance • Rank #3 - Ineffective Hydraulic Regulation Ineffective water control causes Inequitable water apportioning

  21. b. Assistance Necessary • Irrigation Modernization Piloting IRwM adoption still fragmental; Module impact needed proof • Technical Capability Enhancement Experienced staff retired; Retained staff needed trained • Irrigation Statistics Validation Serviceable area needed inventorying with mapping

  22. c. Adaptation Initiatives • Irrigation System Modernization Water Supply Shortage Water Distribution Inequitableness Irrigation Facility Dysfunction Operations Constraints Generate Serviceable Area Restore Serviceable Area Increase Harvested Area Current Thrusts Irrigation Modernization Module Irrigation Engineering Center System Improvement Plan Unique Situation Bad Experience Triggered Insights/Papers Synthesized Development Process

  23. d. Policy Considerations • Design Waterduty Responsiveness Crop: Lowland Rice Scheme: Continuous Irrigation Value: 1.5 li sec-1 ha-1 [13 mm day-1] Design Assumptions Saturation Irrigation Maintenance Irrigation Irrigation Periods Adequacy Status Inadequate: Saturation, Submergence Adequate Effective Rainfall Year-Round Irrigation R3CP Default Wet-to-Wet Interlap

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