Data | gis-370-project

The collected data came from four different public sources:

UCLA GIS Mapshare: http://gis.ats.ucla.edu//Mapshare/Default.cfm
Used for collection of land use, study area boundary, tributary location, highways
Los Angeles County GIS Data Portal: http://egis3.lacounty.gov/dataportal/category/theme/environmental
Rainfall intensity, Land Use,
Brenor Brophy Private Aviation: http://www.brenorbrophy.com/California-DEM.htm
Used for collecting the DEM of Southern California
National Renewable Energy Laboratories: http://www.nrel.gov/gis/data_wind.html

Used for wind data

Projection

The data sets that were downloaded all came in various projections, therefore making it imparitive to reproject all layers and pieces of data into one uniform projection. The selected projection was: Transverse_mercator_NAD_1983_2011_UTM_Zone_11N. Through a few individual reprojections and a large batch reprojection, all pieces of data were converted to the same projection.

Preparation

In order to isolate Los Angeles County from the rest of the map,, a mosaic dataset was made by meshing the four DEMs (Digital Elevation Models) that were downloaded from the Brenor Brophy website. Then, to give the study area its shape, the LA County border extracted when paired with the mosaic data set. After that was completed, the four variables to find the areas of concern were mapped: rainfall, fire hazard zones, relative wind speeds, and slope.

Note: Due to limited time and accessability to data, I decided that these four variables would have to suffice in creating final maps.