Network Analysis- Prepare and Analysis (GIS4930)

For our first assignment, we are hired by the City of Tampa to make preparations for a hurricane soon to make landfall. We began by preparing all the necessary data. Starting with our study area, which was clipped and re-projected to fit the confines of Tampa, FL. A DEM was given to us which was reclassified, converted to a polygon, and then used to determine the flood zone. The Streets feature was modified to be prepared in use for a road network.

Upon beginning the analysis portion, a Network Dataset was created using the Streets feature. When setting up the Network Dataset, attributes could be set and three were added:
1. Seconds, used as the impedance attribute in order to determine the fastest and simplest routes.
2. FloodPublic, which marked the flooded streets.
3. FloodEmer, routes for emergency vehicles that might have to utilize flooded streets.

From here, four scenarios were considered. Beginning with the first, patients from the Tampa General Hospital had to be evacuated to neighboring hospitals of Memorial Hospital and St. Joseph's Hospital. Seconds were used as the impedance and the restriction was placed at oneway streets. Next, supplies that are planned to arrive at the U.S. National Guard armory are to be redistributed to three nearby shelters. In this case, FloodEmer was used as a restriction. Thirdly, residents of the downtown area needed to be evacuated to Middleton High School with seconds placed as the impedance and oneway streets as a restriction. Lastly, the nearest shelter depending on location was determined. As seen in the map provided, the areas are denoted by different colors. This was done by creating a New Service Area and setting the shelters as facilities.