Puerto Galera Watersheds

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  • 1. Puerto Galera Watersheds
    • Increasing population
    • Tourism boom
    • Increased demand for resources ( e.g. land, water, food)
    • Land use / cover change
    • More wastes generated
  • 2. How can watershed modeling help Puerto Galera?
    • Assessing water supply potential
    • Quantifying material fluxes, also from built-up areas
    • Assessing the effect of clear-cutting and deforestation
    • Evaluating risk of flash flooding
    White Beach forest 2005 deforested 2005 (from 2001)
  • 3. Puerto Galera Watersheds Balatero watershed Aninuan watershed SRTM 3” DEM
  • 4. Balatero Watershed Present LC All Forest All Bare
  • 5. Balatero Watershed Present LC Rapid increase in stream discharge High peak discharge All Forest All Bare Gradual increase/decrease in stream discharge More gradual increase/decrease in stream discharge Low peak discharge
  • 6. Aninuan Watershed Aninuan Watershed Aninuan Watershed All Bare All Forest
  • 7. Conclusions
    • Long-term continuous monitoring reveals discharge dynamics not adequately captured by intermittent grab sampling
    • Land cover composition and landscape patterns have significant influence on river/stream discharge
    • Watershed modeling is a useful tool for understanding effects of land cover change, among other factors, and hence for supporting decision-making in a coastal environment.
  • 8. Maraming salamat po!