Last week Missouri got a lot of rain, which caused flooding in the Meramec river valley near St. Louis. I received a link to an ArcGIS Image Service that Surdex had created and provided that showed the flooding as of Tuesday 5/2. They flew this imagery as a service to the government and first responders, hoping to help those affected quicker and more efficiently. Here’s a sample:
I was really interested in this imagery, but it lacked some context – I couldn’t tell how the flooding depicted in the imagery compared to normal conditions. I knew ArcGIS Web AppBuilder had a swipe widget though, so I quickly:
- Added the Image Service (provided by Surdex) to a web map, and chose the ArcGIS Imagery basemap and an initial extent
- Created a Web App from that web map using Web AppBuilder.
- In Web AppBuilder, enabled the swipe tool to be enabled by default.
- Shared the web map and app publicly.
This app provided a really compelling, interesting view of the data:
The app web viral on Twitter and Facebook – gaining 20,000 views over a three-day period, and even got published on the St. Louis Post Dispatch.
So I’m now an official, published map author now, right? 🙂
A few links: