A map of natural hazards in Arizona. Built by the AZGS and ADEM with funding from FEMA. The initial scope is to show information about earth fissures, geologically "active" faults, earthquakes, flood risks, and wildfire risk.
The map itself can be viewed here: http://data.azgs.az.gov/hazard-viewer/
Prerequisites: Nodejs
The following steps run an install script which compiles the javascript from coffeescript, the html from jade and the css from less. It was created for a Linux/Mac enviroment but see steps below to get the application running in Windows, or you can create your own watchers in your IDE. In the future an equivalent install.sh needs to be created for Windows or a cross-platform install script should to be written (using shelljs?).
In a Linux/Mac environment:
$ npm install
$ node server.js
In a Windows environment:
- Modify
package.jsonby removing./beforeinstall.sh:
"install": "install.sh"
- In a Windows terminal:
> npm install
- In the new
scriptsdirectory move everything fromscripts/srctoscripts - Move
scripts/server.jsto the hazards viewer root,hazards-viewer
> node server.js
Page is served out at http://localhost:3001/
In Cloud9 Linux environment:
After above steps make sure to change the port to 8080 in server.js. That is app.listen(3001); should be changed to app.listen(8080);Page is accessed at your Cloud9 web server page though make sure to use 'http' instead of 'https'.
Earth fissures are open surface fractures that may be as much as a mile in length, up to 15 ft wide, and 10s of feet deep.
Update Frequency: These data are updated infrequently. Updates require changes to the AZGS Hazards database, and should be accompanied by changes in the AZGS document repository and the primary Earth Fissure site.
Faults that are known to have been active within the last 2.5 million years (Quaternary period), and thus have some chance that they could generate a large earthquake.
Update Frequency: This dataset is updated infrequently. Updates require changes to the AZGS Hazards database, and should be accompanied by changes to Arizona's NGDS Active Faults data service
The earthquakes displayed are from the AZGS Earthquake Catalog, and are the minimum number of earthquakes that have occurred in the historical period dating to about 1850.
Update Frequency: This dataset is regularly updated, and new/changed data are automatically displayed on the map.
Areas with High and Medium flooding potential as represented by the 100- and 500- flood zones determined by the Federal Emergency Management Agency (FEMA) digital flood insurance rate maps (DFIRM) database, dated May 2010.
Update Frequency: This dataset was created in 2010 and will be updated infrequently. Any updates will require changes to the AZGS Hazards database.
Relative risks of wildfire based on values at risk (i.e. development, infrastructure, etc.), the likelihood of an acre to burn, the expected final fire size based on fuels conditions and potential fire behavior and the difficulty or expense of suppression.
Update Frequency: This dataset is not maintained by the AZGS and will be updated infrequently. Updates may involve:
- Reclassifying a raster for simple categorization of fire risk
- Updating the backend for the WCS service
- Rebuilding .png tiles and replacing the existing set (http://{s}.tiles.usgin.org/fire-risk-index/{z}/{x}/{y}.png)
The term landslides here encompasses many types of mass movement features including rock falls, slides, topples, debris flows, and earth slides. Landslide features range in size from small localized slides a few tens of feet across to complexes of many large slide blocks miles wide.
Update Frequency: The building of a statewide landslide database for AZ is an ongoing project and new mapping and landslide data will be added as it becomes available. AZGS hopes to partner with other state, county, and tribal agencies to make the database as complete as possible.