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16-12-2019, 04:52 PM
Quite interesting article @ Diario de Fuerteventura:
The study prepared by the Insular Council of Waters indicates that there are 28 kilometres of the majorera coast at risk, in areas such as El Cotillo, Corralejo, Puerto del Rosario or Morro Jable
Risk map of the El Cotillo area.
The island of Fuerteventura has 34 areas with potential flood risk. Of these, 27 are coastal areas, flooded by the sea, and another seven are river areas, six of them inland. Of the coastlines, five are on the west coast and the other 22 on the east coast, scattered throughout the geography, from north to south.
The Insular Council of Aguas de Fuerteventura has begun the period of public consultation, for a period of three months, of the review and update of the hazard and flood risk maps of the Fuerteventura Hydrographic Demarcation, in the procedure corresponding to the second Planning cycle of Flood Risk Management, which runs between 2021 and 2027.
The assessment and management of flood risks is a requirement of the European Union. Flood areas are those in which there is a potential risk of significant flooding "or in which the materialization of that risk may be considered probable."
Therefore, hazard and flood risk maps are developed, and flood risk management plans, which must be reviewed periodically. All the information can be found on the website Aguasfuerteventura.com.
The document includes flooding areas of coastal and river origin but not floods derived from the incapacity of urban sanitation and drainage networks, those caused by the breakage or malfunction of dams or those derived from possible tsunamis and tsunamis.
The areas chosen respond to those that, due to their specific characteristics, exceed the thresholds of significance of the methodology. Sections that suffer potential impacts or negative consequences of flooding.
In the municipality of La Oliva there are six of these coastal areas, including the two largest, Corralejo with more than seven kilometres and the Los Lagos urbanization in El Cotillo with almost four kilometres. In the northern municipality there are 13.5 kilometres of coastline affected.
In Puerto del Rosario, there are six zones that total 3.5 kilometres; while in Antigua there are three kilometres in three zones; in Tuineje, there are 4.2 kilometres, divided into four zones; and, in Pájara, eight flood zones are counted, totalling almost four kilometres.
In total, on the coast there is just over 28 kilometres at risk of flooding, which must be added to the seven areas of possible river flooding that add another 17 kilometres.
Corralejo risk map.
The coastal areas identified in the risk map are: Corralejo, Oliva Beach, El Cotillo and Los Lagos urbanization, Majanicho, El Jablito, Puerto Lajas, Puerto del Rosario lighthouse and thermal power plant, El Charco-Puerto del Rosario, Los Pozos- Puerto del Rosario, Parador de Fuerteventura, Puertito de los Molinos, Caleta de Fuste-Marina, Fuerteventura Golf Club, Casas de Pozo Negro, Las Playitas-Playa del Pajarito, Gran Tarajal, Giniginámar, Tarajalejo, La Lajita and Barranco del Tarajal de Sancho, Calma Bay, Los Albertos, Los Verodes, Las Gaviotas, Morro Jable, Puertito de la Cruz and Ajuy-Puerto de la Peña.
Among the conclusions of the document for the planned period is the fact that it cannot be concluded that climate change will be decisive until at least 2027. Some of the statistical and probability scenarios foresee a decrease in rainfall and surface run-off. and others indicate that precipitation variations are not expected for that time frame.
The main conclusion drawn from this analysis is that "estimates of the effects of climate change on flooding present high uncertainty, especially in regard to rainfall, both in average and extreme values." With regard to variations in sea level, according to the information contained in the document Strategy for Adaptation to Climate Change of the Spanish Coast , an upward trend is expected at the medium level.
Studies suggest that it is "likely" that the sea level will increase in a range of five to 10 centimetres in the next decade, while the progressive rise, over the next century, can approach the meter. The increase in emissions accelerates the thaw at the ends of the planet, raises the sea level and, in turn, the water temperature.
Caleta de Fuste risk map.
To incorporate new flood areas, several levels of risk are established. Level one would be for urban centres, concentrated population centres, social facilities, such as large hospitals, strategic industrial facilities, commercial ports, first-order roads or highways, campsites, etc.
Level two is the dispersed population centres, non-strategic infrastructures, such as marinas or local roads, small industries, sewage and desalination stations, and the third is in isolated houses and facilities.
To this new evaluation only one area has been added with respect to the previous one. On the other hand, no Events derived from coastal episodes have been recorded in the past.
Regarding the river areas, although only seven zones have been marked, the study indicates that “in the rest of the territorial area it has been found that the damages generated by the avenues are not restricted to certain areas and easily identifiable a priori, but that they extend to almost the entire territory ”.
“Nor are these damages due only to the overflow of the channels, but other origins are frequent, such as run-off from the slope, the absence of passage works or the manifest insufficiency of the sanitation networks or the drainage works of the infrastructure of transport, ”he adds.
He points out, however, that in some of these areas and thanks to the execution of certain structural measures (mainly channelling works), "the danger and, therefore, the associated risk have been minimized."
Although the danger has diminished, these areas have been maintained as flood. These are five ravines, those of Gran Tarajal, Tetir, Las Playitas, Casillas del Ángel and Los Varichuelos (El Matorral), and two endophoric basins, those of Lajares and La Oliva. Six of these river areas are in the interior and are divided into three municipalities: Puerto del Rosario, La Oliva and Tuineje.
During the period between 2011 and 2017, a total of 52 Events occurred in these areas. The amount of damage caused by floods amounts to more than 187,000 euros. A third of these Events occurred on October 28, 2012. Other significant days were January 24 and 25, 2011. In those three days “there were numerous Events associated with rockfalls on the communication and flooding roads of garages and premises "
Regarding the possible future estimate of the damages that river floods can cause on the Island, for a period of one hundred years, the calculation is about sixty million euros. The ravine of Gran Tarajal is the area where the greatest effect on economic activity would be, followed by the Lajares basin, each with a proposal of more than twenty million euros. In addition, the floods would be susceptible to damage to two goods of cultural interest, such as the Casa del Inglés and the hermitage of Santa Ana.
Fuerteventura has 27 areas at risk of flooding due to rising sea levels
The study prepared by the Insular Council of Waters indicates that there are 28 kilometres of the majorera coast at risk, in areas such as El Cotillo, Corralejo, Puerto del Rosario or Morro Jable
Risk map of the El Cotillo area.
The island of Fuerteventura has 34 areas with potential flood risk. Of these, 27 are coastal areas, flooded by the sea, and another seven are river areas, six of them inland. Of the coastlines, five are on the west coast and the other 22 on the east coast, scattered throughout the geography, from north to south.
The Insular Council of Aguas de Fuerteventura has begun the period of public consultation, for a period of three months, of the review and update of the hazard and flood risk maps of the Fuerteventura Hydrographic Demarcation, in the procedure corresponding to the second Planning cycle of Flood Risk Management, which runs between 2021 and 2027.
The assessment and management of flood risks is a requirement of the European Union. Flood areas are those in which there is a potential risk of significant flooding "or in which the materialization of that risk may be considered probable."
Therefore, hazard and flood risk maps are developed, and flood risk management plans, which must be reviewed periodically. All the information can be found on the website Aguasfuerteventura.com.
The document includes flooding areas of coastal and river origin but not floods derived from the incapacity of urban sanitation and drainage networks, those caused by the breakage or malfunction of dams or those derived from possible tsunamis and tsunamis.
The areas chosen respond to those that, due to their specific characteristics, exceed the thresholds of significance of the methodology. Sections that suffer potential impacts or negative consequences of flooding.
La Oliva, municipality at risk
In the municipality of La Oliva there are six of these coastal areas, including the two largest, Corralejo with more than seven kilometres and the Los Lagos urbanization in El Cotillo with almost four kilometres. In the northern municipality there are 13.5 kilometres of coastline affected.
In Puerto del Rosario, there are six zones that total 3.5 kilometres; while in Antigua there are three kilometres in three zones; in Tuineje, there are 4.2 kilometres, divided into four zones; and, in Pájara, eight flood zones are counted, totalling almost four kilometres.
In total, on the coast there is just over 28 kilometres at risk of flooding, which must be added to the seven areas of possible river flooding that add another 17 kilometres.
Corralejo risk map.
The coastal areas identified in the risk map are: Corralejo, Oliva Beach, El Cotillo and Los Lagos urbanization, Majanicho, El Jablito, Puerto Lajas, Puerto del Rosario lighthouse and thermal power plant, El Charco-Puerto del Rosario, Los Pozos- Puerto del Rosario, Parador de Fuerteventura, Puertito de los Molinos, Caleta de Fuste-Marina, Fuerteventura Golf Club, Casas de Pozo Negro, Las Playitas-Playa del Pajarito, Gran Tarajal, Giniginámar, Tarajalejo, La Lajita and Barranco del Tarajal de Sancho, Calma Bay, Los Albertos, Los Verodes, Las Gaviotas, Morro Jable, Puertito de la Cruz and Ajuy-Puerto de la Peña.
Among the conclusions of the document for the planned period is the fact that it cannot be concluded that climate change will be decisive until at least 2027. Some of the statistical and probability scenarios foresee a decrease in rainfall and surface run-off. and others indicate that precipitation variations are not expected for that time frame.
The main conclusion drawn from this analysis is that "estimates of the effects of climate change on flooding present high uncertainty, especially in regard to rainfall, both in average and extreme values." With regard to variations in sea level, according to the information contained in the document Strategy for Adaptation to Climate Change of the Spanish Coast , an upward trend is expected at the medium level.
Studies suggest that it is "likely" that the sea level will increase in a range of five to 10 centimetres in the next decade, while the progressive rise, over the next century, can approach the meter. The increase in emissions accelerates the thaw at the ends of the planet, raises the sea level and, in turn, the water temperature.
Caleta de Fuste risk map.
To incorporate new flood areas, several levels of risk are established. Level one would be for urban centres, concentrated population centres, social facilities, such as large hospitals, strategic industrial facilities, commercial ports, first-order roads or highways, campsites, etc.
Level two is the dispersed population centres, non-strategic infrastructures, such as marinas or local roads, small industries, sewage and desalination stations, and the third is in isolated houses and facilities.
To this new evaluation only one area has been added with respect to the previous one. On the other hand, no Events derived from coastal episodes have been recorded in the past.
52 Events in river areas in the last six years
Regarding the river areas, although only seven zones have been marked, the study indicates that “in the rest of the territorial area it has been found that the damages generated by the avenues are not restricted to certain areas and easily identifiable a priori, but that they extend to almost the entire territory ”.
“Nor are these damages due only to the overflow of the channels, but other origins are frequent, such as run-off from the slope, the absence of passage works or the manifest insufficiency of the sanitation networks or the drainage works of the infrastructure of transport, ”he adds.
He points out, however, that in some of these areas and thanks to the execution of certain structural measures (mainly channelling works), "the danger and, therefore, the associated risk have been minimized."
Although the danger has diminished, these areas have been maintained as flood. These are five ravines, those of Gran Tarajal, Tetir, Las Playitas, Casillas del Ángel and Los Varichuelos (El Matorral), and two endophoric basins, those of Lajares and La Oliva. Six of these river areas are in the interior and are divided into three municipalities: Puerto del Rosario, La Oliva and Tuineje.
During the period between 2011 and 2017, a total of 52 Events occurred in these areas. The amount of damage caused by floods amounts to more than 187,000 euros. A third of these Events occurred on October 28, 2012. Other significant days were January 24 and 25, 2011. In those three days “there were numerous Events associated with rockfalls on the communication and flooding roads of garages and premises "
Regarding the possible future estimate of the damages that river floods can cause on the Island, for a period of one hundred years, the calculation is about sixty million euros. The ravine of Gran Tarajal is the area where the greatest effect on economic activity would be, followed by the Lajares basin, each with a proposal of more than twenty million euros. In addition, the floods would be susceptible to damage to two goods of cultural interest, such as the Casa del Inglés and the hermitage of Santa Ana.
I 
Fuerteventura
Fuerteventura
