18 Major River Basins (With Drainage Area Greater Than1,000 Sq .Km .) 72 Lakes Extensive Groundwater Aquifers
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2011/9/21 VICENTE B. TUDDAO, JR., Ph.D. Executive Director River Basin Control Office Department of Environment and Natural Resources Mandarin Oriental Hotel Makati City, Metro Manila September 21, 2011 421 Principal rivers (421 river basins) 18 major river basins (with drainage area greater than1,000 sq .km .) 72 lakes Extensive groundwater aquifers 1 2011/9/21 Number Name of River Basin Drainage (sq. km.) 1 Cagayan 27,753 2 Mindanao 23,169 3 Agusan 11,937 4 Pampanga 10,434 5 Agno 5,952 6 Abra 5,125 7 Pasig-Laguna 4,678 8 Bicol 3,771 9 Abulug 3,372 10 Tagum Libuganon 3,064 11 Ilog-Hilabangan 1,945 12 Panay 1,843 13 Tagoloan 1,704 14 Agus 161,645 15 Davao 1,623 16 Cagayan de Oro 1,521 17 Jalaur 1,503 18 Buayan-Malungan 1,434 TOTAL 112,473 37.50 % of the total land area of the Philippines 2 1,645 KmSquare Area: Drainage Total AGUS RIVER BASIN(RANAOBASIN) AGUS MCM 25000 30000 10000 15000 20000 5000 0 I Abra II Cagayan II Abulog III Pampanga Water Resources Potential Potential Water Resources III Agno IV Pasig-Laguna V Bicol VI Jalaur VI Panay Water Demand in2025 VI Ilog- Hilabangan VII Cebu Island X Agusan River Basin Information Brief Information Basin River X Tagoloan X Cagayan de Oro XI Tagum- Libuganon XI Davao XI Buayan- Malungon XII Agus XII Mindanao 6 2011/9/21 3 2011/9/21 Type and Scope of River Area Administrative Institutional Type Basin/Watershed Management Extent Coverage Coordinating Agency Plans Nation Whole Country National inter-agency Coordination and prioritization of basin resources the different levels of basin management forum/ management within a national national river basin strategy framework management body Over Typically the River Basin Organization Plan aimed at broad sector River Basin 1000km2 topographic (RBO)/Authority that is development planning, and land boundaries would inter-regional in extent use zoning. Identification of include land occurring degraded and/or economically within 3 or more important medium to large provinces and 2 or watersheds within the river basin. more regions Identification of medium-large areas in need of protected area status. Large 500-1000 Typically the Regional level watershed Plans aimed at identifying broad Watershed km2 topographic management council that land use zones and areas (small boundaries would is inter-provincial in to medium watersheds) where include land occurring extent there is a need for improved within 3 or more watershed management. provinces and at least Identification of small-medium one but no more than areas in need of protected area 2 regions status. Administrative Institutional Type and Scope of Basin Type Area Extent Coverage Coordinating Agency Management Plans Medium 100-500 km2 Typically the Provincial level Plans aimed at identifying areas Watershed topographic watershed ma within the watershed where ther boundaries would is a need for field level activities include land occurring Implementation plan targets within at least one but activities only on the critical part no more than two of the watershed. provinces Small 10-100 km2 Typically the Provincial/ municipal Plans aimed at field level Watershed topographic level watershed implementation of improved boundaries would fall management council/ watershed/ land management within one province committee interventions. Plan covers the and include land whole (or most of the) watershed occurring within one and adjacent land of the or more municipalities participating communities. Micro Under 10 km2 Typically the Municipal/ Barangay Plans aimed at field level Watershed topographic community level implementation of improved boundaries would fall watershed management watershed/ land management within one municipality council intervention. Plan covers the and include land whole watershed and adjacent occurring within one or land of the participating at most two community Barangays 4 2011/9/21 Water Resource Watershed Management Management Framework framework Integrated River Basin Management and Development Framework Plan Flood Mitigation Wetland framework Management Framework 5 2011/9/21 At the River Basin Level Rainfall Protection and sustainable development of water resources across various ecosystem should focus on: Water Quality Management (Water Pollution reduction) UPLAND/FORES Water Supply and Demand Management (watershed T ECOSYSTEM Mttti/Management, water conservation/re-use/lii/recycling in ` farming and urban water utilization) LOWLAND ECOSYSTEM COASTAL & + MARINE ECOSYSTEM River Basin as a Planning unit Water conservation considers hydrologic cycle and climate change issue • . FOREST ECOSYSTEM Water Quality ZONE Coastal URBAN UPLAND ECOSYSTEM ecosystem ecosystem ZONE` zone zone Water Quality + GROUNDWATER AQUIFER ECOSYSTEM 6 2011/9/21 The Philippine Clean Water Act 2004 (Republic Act No, 9275) designate certain areas as water quality management area appropriate physiographic units such as watershed, river basins or water resources regions similar hydrological, meteorological or geographic conditions which affect the physiochemical, biological and bacteriological reactions and diffusions of pollu tan ts in wa ter bo dies or o therw ise s hare common interest or face similar development programs, prospects, or problems 7 2011/9/21 AIMS TO IMPROVE WATER QUALITY THROUGH FOCUSED INTERVENTIONS OR ACTIONS TO ADDRESS WQ PROBLEM(S) OF THE AREA WATER QUALITY MANAGEMENT SYSTEM FORMULATION AND IMPLEMENTATION OF WQMA ACTION PLANS DESIGNATION OF IDENTIFICATION WQMAs OF NAAs Manageable Planning Area Focused intervention or actions designed to address specific water quality issues in each basin area Management area with similar hydrological, hydroecological, meteorological, and geographical characteristics Ease of monitoring the state of water quality 8 2011/9/21 Stakeholders Institutions Environment Participation Laws and Policy Quality Ownership Capacity Building Life Support System Voice and Financial Representations Sustainability Productivity Poverty Reduction Integrity Dynamics of Water Quality, River Basin Management and Governance in the Philippines THE CASE OF ILOILOILOILO--BATIANOBATIANO RIVER BASIN: WATER QUALITY MANAGEMENT AREA 9 2011/9/21 ILOILO-BATIANO RIVER BASIN San Miguel IloiloIloilo--BatianoBatiano Sta. Barbara River System MAMBOG WQMA CREEK-JIBAO- AN RIVER Pavia CABALUAN Oton DUNGON RIVER CREEK CALAJUNAN CREEK Iloilo City ILOILO RIVER BATIANO RIVER River Streamflow dynamics during high tide Backflow of water 10 2011/9/21 River Streamflow dynamics during low tide Delineation of WQMA and Sub-Basins Area WATER QUALITY CABALUAN (SUB-BASIN 1) MAMBOG- UPSTREAM ILOILO (SUB- BASIN 2) CALAJUNAN‐ MIDSTREAM ILOILO (SUB‐BASIN 3) DUNGON- DDOWNSTREAMOWNSTREAM ILOILO (SUB-BASIN 4) BATIANO ( SUB-BASIN 5) 11 2011/9/21 Establishment of Water Quality Monitoring Stations Monitoring Stations 6 Stations Along Iloilo River (all in Iloilo City) 4 Stations Along Batiano River 3 Stations Along Calajunan Creek 2 Stations Along Dungon Creek 1 Station in Mambog Creek WATER QUALITY MONITORING STATIONS Calajunan Upstream Calajunan Downstream Mambog Dam Dungon Br. Calajunan Dungon Forbes Br. Dumpsite Mouth Carpenter’s Quirino Br. Bridge Sooc Br. B. Aquino Br. Batiano Br., Parola Oton Calumpang Sto Nino, Br. Blvd Br. Arevalo 12 2011/9/21 Identification, Collection and Analysis of Water Quality Parameters Parameters Analyzed Biochemical Oxygen Demand, pH, Total Dissolved Solid, Total Suspend Solid, Dissolved Oxygen, Color and Temperature Any effort to effectively and efficiently manage water quality of any water bodies can be achieved through river basin as a planning unit. The stakeholders and institution play major role in achieving effective water quality management using basin approach. 13 2011/9/21 Integration of water quality strategies and action plans at the river basin level integrated framework/master plan Establishment and operationali zation ation of River Basin Integrated Information Management System (RBIIMS) incorporating water quality parameters Intensify law enforcement to apprehend violators of Clean Water Act Strengthen participation and partnership in water quality and river basin management Creation and mobilization of River Basin Organization (RBO) in all river basin 14.