Acquisition of available flood hazard data should be undertaken for all sites and all hazard levels. WebCity and the whole Batangas province usually experience earthquakes due to the presence of numerous fault lines. Examples include flood defences, amenity open space, sports and recreational ground, docks and marinas. High-density developed areas are more prone to flooding from direct rainfall onto the land surface, since concrete surfaces force water to flow over the ground rather than infiltrate into it. Buildings and developments also have the potential to exacerbate downstream river flood risk by reducing floodplain storage capacity. o Be aware of the potential impacts of your development on local ecosystems. Examples include flood defenses, amenity open space, sports and recreational ground, docks and marinas. By setting negative elevation, Bathymetry study is also possible. It can also provide floodplain map and floodline map for streams and rivers. Please note that these recommendations are generic and not project-specific. Learn how to create your own. A color legend is provided below the map to help readers interpret the map. WebFlood Monitoring for Metro Manila; Risk Analysis Map; Flood Hazard Map; Regional Severe Wind Hazard Maps; High Frequency Doppler Radar; Vacancy ; GAD Corner ; Learnings . 3 shows the surrounding fault lines in the province of Batangas. Note that flood risk may not always originate from the closest point on the river; you may also be at risk from flood waters that overflow from the channel upstream before flowing downhill over the floodplain. Hazard areas on flood maps. Examples include water treatment works and essential transport infrastructure (including evacuation routes). Breakfast served 7am 11am. This can be used to refine the hazard levels provided by the ThinkHazard! o Consider how your development affects local drainage behavior and its implications for flood risk in downstream areas. Further clarification of the local flood hazard will be required. If any such streams or rivers are present, and your project is not obviously protected by its position in the landscape, assume that the hazard level for your location is higher than Very Low. Please contact for further information. Obstruction of water ways, for example by the development of a poorly located bridge, can also increase adjacent flood risk, as well us upstream. Storm Surge Hazard maps based on predicted storm surge height. The data set used to classify the hazard in this area is not publicly available to view or download due to licensing restrictions. For further information the following resources could be consulted: If you have any, please provide feedback. Storm Surge Advisory 1 Local flood zoning information, typically from government planning departments, can indicate the likely flood hazard for specific locations. The installation and maintenance of urban drainage systems (e.g., storm drains), can effectively remove water from the surface; however, by decreasing the time it takes for rain water to reach the river channel, such systems can lead to an increase in river flood risk downstream. Highly vulnerable - assets that would acutely exacerbate the impacts of a flood, should they become inundated. Organizations such as Reliefweb (reliefweb.int) and FloodList (floodlist.com) provide information about previous events and their impacts. Examples of Grey measures include: If your project is situated at the base of a hill or on flat terrain it is more likely to be at risk than if it is situated on the top or side of a hill. If a development removes space that previously stored excess water, the scale and/or speed of run-off will increase. Instead the WMO has outlined what it calls Integrated Flood Management (See WMO- Integrated Flood Management). WebAccording to the 2011 Philippine Disaster Report of the Citizens Disaster Response Center (CDRC), flood topped the list of the five (5) disasters in 2011 with 121 reported incidents or 28% of the total number of disaster events monitored in the same year. The local government may hold written records or observations into previous flood events. 
Surface runoff, flow diversion, land type etc. When building a new development, consider how it will impact local hydrology. This phenomenon is often prevalent in high-density developed areas, where impervious surfaces (e.g. Examples include residential buildings, educational and landfill facilities. In the area you have selected (Batangas) river flood hazard is classified as low based on modeled flood information currently available to this The position of your project in the landscapewill be key in defining whether there is a risk.Flooding is most likely to occur in relatively flat areas beside the identified waterways ('floodplains'). The implementation of flood defenses is sometimes referred to as Grey protective measures, as they involve the implementation of built structures to protect areas or transport water away as quickly as possible. Choose "Province", "Municipal". Flood management is likely more applicable to projects in low-density developed areas (e.g. Overwhelmed sewer and drainage systems can significantly contribute to the flood hazard in an area, so information regarding drainage issues should also be sought where available. More vulnerable - assets that would result in significant damage should they become inundated. If local data confirm the presence of a flood hazard, undertake a cost/benefit analysis to weigh up whether relocation is preferable to a flood-resilient design. o If your project provides a critical service, consider implementing basic measures to ensure the project can continue to function in the event of a flood, such as locating critical electronic equipment above ground level. o Global EWS may be applicable, check whether the hazardous river systems are included in GLOFAS (http://www.globalfloods.eu/). 
Lastly, it For both medium and low hazard levels, a cost benefit analysis would be a recommended course of action to take before a project is considered for relocation. Local EWS are likely to be run by government agencies, emergency responders or even local communities. Where possible, this integrated approach to flood management represents the most ideal approach to alleviate flood risk. It may be that building flood resilient structures or implementing flood defences is more cost effective than moving the project to a different location. Project planning decisions, project design, and construction methods should take into account the level of river flood hazard. Examples include residential buildings, educational and landfill facilities. Aside from its harbor, Batangas City also serves as an alternate o Flash-flooding may arise from proximity to small streams and/or from intense rainfall directly onto the land surface. Externally provided services may be based in a different physical location and therefore be subject to a different level of flood hazard. Management of upstream catchment areas is sometimes defined as being Green protective measures, as they often involve the restoration of natural wetlands or the removal of impermeable surfaces. Examples include emergency response units, hospitals, power stations, installations of hazardous materials. Extreme rainfall is, therefore, more likely to translate into surface water flooding than if the land surface was kept permeable. Bathymetric map, ocean depth. -Storage of runoff: wetlands and reservoirs can store excess water during extreme flows, reducing the magnitude of the flood event. 
10 Years Industry Leading in Manufacturing of below Products A Smart inventory & accounting software that helps you keep a control on your store with smart billing, reporting and inventory Floodplains are valuable ecological resources that will provide a habitat for a wide variety of plants and animals. WebHence, users are advised to view the hazard map overlain with the administrative boundary layer to visually verify how much of the area is within the scope of the hazard. This approach not only aims to alleviate flood risk in highly vulnerable areas but also aims to create opportunities from flooding by maximizing the net benefits from the use of floodplains. However, a location may have no events recorded in these archives; this does not mean there is no hazard it simply means that an event has not yet been recorded officially. Examples of Grey measures include: The flood management options available will depend upon the size of the development, the resources available and the willingness/ability of other land users in the catchment area to participate in a flood management scheme. Check to see if other planned projects in your area or upstream may affect your project, for example by moving water downstream to your site more quickly thereby increasing your sites flood hazard. The limitations of these data, particularly those produced over large scales, cannot be overstated. Since flooding is a very local phenomenon, the hazard information provided by this tool should be considered the preliminary action in defining river flood hazard level. This means that there is a 1% chance drought will occur in the coming 10 years. 
It may help flood risk assessment or flood management. Please note that these recommendations are generic and not project-specific. Philippine Atmospheric Geophysical and Astronomical Services Administration (PAGASA), Philippines National Disaster Risk Reduction & Management Council (NDRRMC), Turn Down the Heat : Climate Extremes, Regional Impacts, and the Case for Resilience, Building Urban Resilience - Principles, Tools, and Practice, FLOPROS: A global database of Flood Protection Standards, Shock Waves : Managing the Impacts of Climate Change on Poverty, Turn Down the Heat : Why a 4 Degree Centrigrade Warmer World Must be Avoided. To further define potential flood risk, a local assessment should be undertaken to identify whether any sources of flooding exist (rivers/streams). Documentation of previous events, through local news reports, can also provide a useful insight into previous events, and help to define flood risk at a more local scale. o Identify whether there are any additional sources of flood hazard present, such as ephemeral rivers and coastal flooding, which is reported as a separate hazard in this tool if the location of interest is close to sea level in a coastal zone then an investigation into coastal flood hazard is recommended. Flood maps are one tool that communities use to know which areas have the highest risk of flooding. This includes site drainage; increasing impervious paved areas (water does not pass through to the soil) through development can increase flood hazard by increasing the amount and speed at which water drains from your site. Likewise, residents near the project location may have a good understanding of the local flood behavior, particularly if they have resided there for a significant period. The map shows inundation or flooding of as high as 6 meters (almost 20 feet) reaching well into the towns poblacion. These sources of local knowledge should be used to further inform the likely flood hazard level at a given location. These classifications provide a useful blueprint to determine the vulnerability of a given project or asset. 
If they do, it would then be necessary to identify whether the location of interest is situated in an area that may become flooded, usually by identifying whether the area is located within a natural floodplain (see Guidelines for Environment Risk Assessment and Management). Where possible, this integrated approach to flood management represents the ideal approach to alleviate flood risk. Flood Monitoring for Metro Manila; Risk Analysis Map; Flood Hazard Map; Regional Severe Wind Hazard Maps; High Frequency Doppler Radar; Vacancy ; GAD Storage of runoff: wetlands and reservoirs can store excess water during extreme flows, reducing the magnitude of the flood event. This means that there is a chance of more than 20% that potentially damaging and life-threatening urban floods occur in the coming 10 years. - River flood defenses: levees can be built to separate the hazard source (river) from the receptor (e.g. The implementation of flood defences will, by its nature, remove some amount of floodplain storage and exacerbate flood risk elsewhere. If these indicate that the present area is at risk, it may be possible to relocate your project to a nearby site that is less susceptible to flooding. o Consider implementing an Integrated Flood Management approach where possible. For lower vulnerability assets, consider seeking informal guidance from professionals with expertise working in the area. The primary flood hazard classification is indicated in the Flood Hazard Zones layer. o Confirm hazard level using local data before considering relocation. Essential Infrastructure - all infrastructure that cannot be relocated, regardless of hazard level. 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