The first step in creating this model was collecting the data. I used the California Department of Forestry and Fire Prevention website to get the land cover data. I got a dem from the USGS seamless site but it for some reason didn’t work. Thankfully I had remembered that I already had one for LA County on my USB drive. Lastly I found a perimeter of the station fire from an old project. Once I had compiled my data I started working on it. I made a hillshade map from the dem would layer under the semi-transparent thematic layers and the fire perimeter.
In order to make the final fire model I used two layers which are contributing factors to fire spread. The first layer is a map of the land cover type reclassified to show the potential fire hazard of the area based on vegetation. This reclassification is into points that are called NFPA Hazard Points. These points would later be added to those from the respected areas of the second map which was a slope map. In this map I used the spatial analysis tools to get a map which showed the slope in a percentile ranking in for everywhere in LA. I then reclassified these into a point system consistent with the NFPA Hazard Points. Once I had these two maps created I used the raster calculator to combine the maps into one fire model that showed the potential hazard based on both slope and fuel. I think it’s interesting to see how closely the fire follows the areas of hazard as predicted by the model.
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