Demand-Based Site Selection for Fire Stations Using a Network Allocation Model
Author: Nicolas R. Malloy
In this lab, you will explore modeling network paths using a network allocation model. You will create a network dataset, which will allow you to allocate resources based on demand weight and create least-cost paths along a network.
To review concepts related to a network allocation model you can watch Modeling Network Paths Part 4, Part 5 and Part 6 on the Geospatial Institute YouTube channel.
- Review how to acquire data from a public source
- Geocode an address
- Review adding XY data
- Review Data Management Tools: project, define projection
- Create a network dataset
- Model network allocation based on the least-cost paths
- Adjust model parameters to allocation resources based on demand weight
- Evaluate results of network analysis based on demand
In this scenario, the Arcata Fire Protection District has decided to explore the possibility of updating their facilities and relocating the three existing fire departments serving the cities of Arcata and McKinleyville. A number of potential sites have been identified, but it is not certain which location will optimize services within the district. You will attempt to answer this question using a location-allocation solver available through the ArcGIS Network Analyst extension.
You will use the following criteria in your analysis:
- A history of incident responses
- A two minute response time window which captures the greatest demand based on incident history
- A five minute response time window which captures the greatest demand based on incident history
- A comparison of several proposed sites within the Arcata Fire Protection District and related areas
- A comparison between proposed sites and existing fire stations
Conduct this analysis using the Universal Transverse Mercator (UTM) system along with the North American Datum of 1983 (NAD83). Humboldt County lies in Zone 10 of the UTM system. All of your data must be in this spatial reference system at the start of your analysis. Create working copies of your data in this spatial reference system using the Project tool in ArcMap as needed.