I may have mentioned to some of you my dad lives in Wimberley. Fortunately his property is well north of town and on a hilltop, so he was not affected by the disaster along the Blanco River. But our family has visited Wimberley for years and are very familiar with the affected areas. So we are interested in information about what happened.

 

http://waterdata.usgs.gov/tx/nwis/uv?site_no=08171000

 

This is not a Tableau presentation, but nevertheless a good (albeit tragic) example of data telling a story. Readings on the line graphs went vertical suddenly, indicating the wall of water people talked about. It knocked out the flood gauge and they started taking measured rates at some point by the asterisk.

 

To put things in perspective, the discharge volume chart goes off the scale at 70,000 cubic feet per second. Niagara Falls has a flow rate of about 100,000 cubic feet per second.