This map displays the created hazard index for the 2010 census tracts of South Carolina. The hazards taken into account are: earthquakes, liquefaction, landslides, hurricanes, floods, droughts, social vulnerability, and vulnerability to groundwater contamination. Each individual tract for each hazard had a index risk rating from 1 - 5, then the ratings from all hazards were assigned different weights based on economic loss. The social vulnerability was given the largest weight to take into account effect on human populations, and the rest of the hazards were weighted in the following order (decreasing weight): hurricanes, droughts, floods, earthquakes, liquefaction, groundwater contamination, and landslides.
The Landslide Susceptibility Index was developed by Response Directorate FEMA Mitigation Division and the Department of Homeland Security Emergency reparedness in order to determine levels of landslide risks according to a eographical region. Parameters analyzed in this index include geologic group types and their compositions' level of rigidity, groundwater levels, and topography (slope).These indices were calculated and then separated into three geologic groups ( Strong, Weak, Agrillaceous) and compared to groundwater levels to determine which areas were either dry or wet. Finally, this data was evaluated alongside slope degrees, determining the final hazard index.
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This map displays the created hazard index for the 2010 census tracts of South Carolina. The hazards taken into account are: earthquakes, liquefaction, landslides, hurricanes, floods, droughts, social vulnerability, and vulnerability to groundwater contamination. Each individual tract for each hazard had a index risk rating from 1 - 5, then the ratings from all hazards were assigned different weights based on economic loss. The social vulnerability was given the largest weight to take into account effect on human populations, and the rest of the hazards were weighted in the following order (decreasing weight): hurricanes, droughts, floods, earthquakes, liquefaction, groundwater contamination, and landslides.