Basin Action Plan
Anke Westera
Matthias Bethlelem
Jan Fliervoet
Content
 Description Study area
 General, resources, land use, ecosystem needs
 Stakeholders
 Priority issues
 Goals and objectives
 Long-term and short-term
 Benefits shared
 Scenarios
 Strategy
 Financing arrangements
 Responsibilities
 Monitoring program
Description of the basin
 Sibalomwatershed
Spring
Southern part of Mt. Tigaytay
Area
66500 Ha
River length
73.5 kilometers
Average daily discharge
20.000 m3
Elevation ranges
-10 - 1560 meters
Slope ranges
0 (lowlands) - 62% (mountains)
Geological composition
Igneous and metamorphic rocks (mountains)
Sand- and limestone (hilly areas)
Dominated soils
Alimodian Sandy Clay
Mountain Soils clay
Climate type (I)
Dry: Nov – Apr
Wet: May - Oct
Annual rainfall
3388.60 mm (station Valderrama)
Irrigated area (during
wet season)
4200 hectares (7825 farming families)
Municipalities within
catchment
San Remgio, Sibalom, San Jose, Vaderrama,
Patnongon and Belison
Barangays (also partly)
135
Population (direct
impact on
catchment)
185361
Source: DENR, 2007
Natural resources
Natural resources:
state
trends
monitoring
Forest
Less than 20%
(1999)
Decreasing
Remote sensing
Increase mining
activity
Mining activities
monitoring
Decreasing fish
stocks
Monitor fish stocks
Soil
Decreasing quantity
due to erosion
Remote sensing
Water
Increasing demand
for water
Social/economic
studies
Minerals resources
Fishery resources
Reef and river fishes
(WWF)
Inventories
 Land use:
 Forest
 Rice field
 Rice terrace
 Bare land
 Grassland
 Bush land
 Inland water
 Pollution sources:
 Mining activities
 Agriculture
 Domestic
Aquatic and terrestrial ecosystem
needs and their vulnerabilities
 Corals
 Sedimentation
 Pollution
 Mangrove
 Droughts
 Deforestation
 Pollution
 Rainforest
 Deforestation
 Pollution
Stakeholders
Stakeholder
Interests
Participation
Mining companies
Maximum mining activities
Cost-sharing arrangements for
financing basin management
works
National government
Economic development
Joint planning process,
including models, GIS and
environmental impacts.
Municipalities
Economic development
Negotiation/bargaining
between barangays
Barangays
Drinking water (Water quantity
and quality)
Village meetings, informal
communication
Farmers
Easy access to water and
land
Participated in village
meetings
Fishery
Stable fish population
Participated in village
meetings
Loggers
Cutting trees
Participated in village
meetings
NGO’s
Sustainable development
Provide knowledge and
facilitate participation process
Priority issues
 Control deforestation
 Prevent droughts and floods
 Reduce large scale mining
 Create awareness
 Increase data supply
Goals
 Short-term


Provide a database
Create awareness
 Long-term





Adapt land-use
Reforestation
Increase biodiversity
Healthy ecosystems
Social development
Water allocation and water quality
objectives
 Water allocation

No large scale distribution
 Water quality


Decrease mining waste
Increase waste water treatments.
Benefit shares
 Research into the benefit shares of all the
stakeholders and ecosystems by organizing;



Village meetings
Interviews
Special meetings of committees
 E.g. Reforestation will decrease flood risks
and erosion problems, and also benefit the
environment.
Scenarios
 A  Business as usual
 B  Reforestation (erosion and floods)
 C  Decrease mining activities
 Input needs; population growth, climate
change, economic development, erosion,
floods/droughts, etc.
Strategy
1. Start participation processes
2. Establish sub-basin committees
3. Gathering new data (new research
4.
5.
6.
7.
programs)
Select action areas
Implement the actions
Monitor the effects of the actions
Adaptation management plan
Financing arrangements
 Use shared benefits to arrange internal
financing
 External financers (WWF, World Bank,
NGO’s, European Union, Development
Agencies, UNESCO, UN etc.)
Responsibilities
 National government  Implement laws on
sustainability
 River Basin Organization  Planning and
coordination process
 Municipalities and NGO’s  Monitoring the
actions
 Barangays  Executing actions
Monitoring program
 Monitoring on two levels;


Local (mainly by municipalities); using oral
information from local residents on a regular
basis.
National (mainly by NGO’s); using Remote
Sensing for seasonal monotoring.
Assignment 2:
Implications of gravel extraction
 Geomorphology




Increase depth of river bed
Increase flow velocity
Increase erosion of river bed
River bed can become fixed
Assignment 2:
Implications of gravel extraction
 Ecology



Destruction of habitat
Higher flow velocity will lead to stress for
plants and animals
Sedimentation of coral reefs
Assignment 2:
Implications of gravel extraction
 Ecosystem services
 Deeper river bed can hold more water in case
of a flood
 Negative effects of droughts increase (water is
faster out of the system)
 Less water for irrigation
 Less food sources (plants and animals) in the
river
 Deep channel for navigation
 Depleting gravel resource
Assignment 2:
Implications of gravel extraction
 Negative effects are for the local residents,
profits are for the provincial government