Here is the link to my original interactive visualization that is updated daily

After making my California Reservoirs dashboard marimekko graph, I decided to make a similar Colorado river reservoir page. The Lower Colorado water is used in Southern California and Arizona.

The area of each rectangle shows the total volume of the reservoir in thousands of acre feet (kaf). The blue section shows how much of the capacity is full. You can see the two main reservoirs, Lake Mead and Lake Powell are not in good shape relative to their normal historical levels.

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Data Sources and ToolsThe data on water storage comes from the US Bureau of Reclamation's Lower Colorado River Water Operations website. Historical reservoir levels comes from the water-data.com website. Python is used to extract the data and wrangle the data in to a clean format, using the Pandas data analysis library. Visualization was done in javascript and specifically the D3.js visualization library.