API - Graphing Water Information System (GWIS)

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Using GWIS, one or more interactive plots of any current or historical data available from the USGS Instantaneous (Real-Time) Service or Daily Value Service can easily be inserted into a web page. Plot appearance is customizable, and the plots feature interactive zooming, an interactive legend, and optional user controls such as full screen and y-axis log scaling. Multiple plot series, double y-axes and pop-up plots are also supported.