Why organize LGUs for watershed management? 2 nd Jalaur Watershed Stakeholders’ Assembly December 20, 2005 Jessica Calfoforo Salas, Co-Chair TWG of Iloilo Wateshed Management Council
Why organize LGUs for watershed management?
2nd Jalaur WatershedStakeholders’ Assembly December 20, 2005
Jessica Calfoforo Salas, Co-Chair TWG of
Iloilo Wateshed Management Council
The Natural Untreated Watershed
The Natural Untreated Watershed
Runoff water spreads over landscape through a network of rills and gullies to the canals
Entire landscape is moistened but there is little absorption in the soil profile. Most of the rain water flows out resulting in erosion and expansion of rills and gullies.
Crop yields fluctuate with monsoon and during drought years. Crops suffer substantially.
There is little green fodder on grazing grounds
Trees have stunted growth Drinking water is diminishing. Degradation of natural resources results in
poverty, malnutrition, hunger, illiteracy, etc.
Treated
Watershed
For
Specific
Purpose
Watershed treated for a specific purpose (NGAs) The objective of maintaining a watershed for a
reservoir for domestic use, irrigation, hydro-electric power: maximum water and minimum silt should reach the reservoir.
Sole disposal of rainwater through diversion drains, contour bunds, waste weirs, grassed water ways, drop structures and series of check dams in the drainage line to detail silt and allow water to pass downstream.
This approach succeeded in temperate climates where rainfall is equitably distributed but in tropical areas, it is not successful.
With emphasis on safe disposal of water, there is little impact on recharge.
Contour bunds are difficult to make due to small holdings and straight property boundary lines
Production system is not the primary concern. Structures are costly and require regular
maintenance
Integrated
Watershed
Management
Watershed with Integrated management Objective is conservation of water and
spreading the benefit of water during rainy season
Collection of rainwater in sunken ponds (natural & dugout) promoting the recharge of sub surface water (open well) or ground water are the main hydrological principles.
Maximum possible surface flow should be converted into sub- surface flow to moisten the soil profile and promote deep percolation
Main devices are village ponds, wells, trenches, and vegetative hedges and percolation ponds all over landscape. Minimize flow to the drainage line.
This is a holistic principle to collect retain and use rainwater for human and livestock drinking, domestic use, life-saving irrigation, vegetable cultivation and initial watering of horticultural and forest trees.
Availability of water is improved permitting its multiple use.
Crop loss during drought years is minimized. Growth of pasture and establishment of trees is facilitated
Higher yield of food, fodder, fuel and small timbers initiates socio-economic rehabilitation
Improved availability of water in the foundation of growth and development.
The Jalaur Watershed
1,248 km2 catchment area 8 Sub Watersheds:
1. Ulian-Alibunan Watershed
2. Magapa-Suage Watershed
3. Janipa-an – Jelicuon Watershed
4. Jalaud Watershed
5. Asisig-Lamunan Watershed
6. Tabun-ak Watershed
7. Sigangaw Watershed
8. Maniniw-Abangay Watershed
INSTITUTIONAL ARRANGEMENT
Members of the Jalalur Watershed Management Board
1. Representative of Ulian-Alibunan Watershed
2. Representative of Magapa-Suage Watershed
3. Representative of Janipa-an Jelicuon Watershed
4. Representative of Jalaud Watershed
5. Representative of Asisig-Lamunan Watershed
6. Representative of Tabun-ak Watershed
7. Representative of Sigangaw Watershed
8. Representative of Maniniw-Abangay Watershed
9. Bulabog Puti-an PAMB
10. Mt. Baloy National Park PAMB
11. Representative, Jalaur River Bank at Calinog
12. Representative, Jalaur River Bank at Passi
13. Representative, Jalaur River Bank at San Enrique
14. Representative, Jalaur River Bank at Duenas
15. Representative, Jalaur River Bank at Dingle
16. Representative Jalaur River Bank at Pototan
17. Representative Jalaur River Bank at Dumangas
18. Representative, Jalaur River Bank at Barotac Nuevo
19. Representative, Jalaur River Bank at Zarraga
20. Representative, Jalaur River bank at Tapiz, Capiz
21. Representative Jalaur Riverbank at Valderrama
Ulian-Alibunan WatershedMunicipalities Lambunao Calinog Dingle Duenas
Magapa-Suage WatershedMunicipalities Maasin Janiuay Badiangan Mina Pototal
Janipa-an Jelicuon WatershedMunicipalities Cabatuan Mina New Lucena Zarraga Leganes
Jalaud WatershedMunicipalities Barotac Nuevo Dumangas
Asisig-Lamunan WatershedMunicipalities Bingawan Passi San Enrique San Rafael Dumalag Capiz
Tabun-ak WatershedMunicipalities Anilao Dingle San Enrique
Sigangaw WatershedMunicipalities Mina Pototan Zarraga
Maniniw-Abangay WatershedMunicipalities Lambunao Badiangan Duenas Dingle Pototan
Jalaur River BankMunicipalities
Jalaur River BankMunicipalities Passi Calinog San enrique Duenas Dingle Pototan
Dumangas Barotac Nuevo Zarraga Tapas, Capiz Valderrama, Antique
The watershed management structure is only a shell.
What will make a difference are the actions in each barangay.
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