Using Sensors with ArcGIS for Flood Monitoring
Flooding can have an enormous impact on public infrastructure, critical facilities, and vulnerable citizens. Most water districts now spend time on flood planning; analyzing the impact of seasonal flooding scenarios and developing flood response plans. Sensors have proven important for ongoing monitoring of water resources, and a key part of many flood plans. Placed in streams, rivers and reservoirs, sensors provide real time data on water levels, flow and volume to provide a solution. Central Utah Water Conservancy District approached WebMapSolutions to help map and share their sensor data.
Move from a chart/graph based sensor data output to map based.
Create an externally facing web application which provided users the ability to view sensor locations on a map. Both query and chart the data at each individual sensor location.
Central Utah Water Conservancy District had developed a very sophisticated backed system for dynamically collecting sensor. They had an API in place which provided access to the data. The data was point based (x,y) with attributes reflecting current sensor readings.
An ArcGIS Web application was built which took the sensor data and mapped the sensor locations, and provided access to the raw sensor data. The images below are taken from the application, and show the workflow:
1. Sensors are overlaid on the map as red points. Click on a point and a pop up shows content and release data with time stamp.
2. Select the ‘More info’ link in the pop up and more detailed data from the sensor is provided in a separate pop up.
3. Select the ‘Site details’ link in the pop up and a new page opens which provides time based data. Users can select the time period to view. Both tabular data can be displayed, as shown below:
4. Graphing this data over the selected time period is another option. Users can view data based on contents and, as is shown below, release to river/stream.