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U.S. River Conditions From October to December 2019

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Detailed Description

This is an animation showing the changing conditions of USGS streamgages from October 1, 2019 to December 31, 2019. The conditions shown range from the driest condition seen at a gage (red open circles) to the wettest (blue closed circles). There is also a purple ring added to indicate gages that are flooding. During the animation, most of the East Coast was experiencing dry conditions in October until frontal systems in early November improved conditions, the Upper Midwest was experiencing high flows and flooding for much of October into November, storms in early December caused high flows and flooding in the Ohio and Tennessee Valleys, New England rivers experienced high flows in mid-December, the Southeast experienced wet conditions and flooding in late December after multiple fronts passed through the region, and lastly, a low-pressure storm system swept through the Midwest at the end of December causing high flows and floods. Note that both USGS gage height and National Weather Service flood stage levels are necessary to determine flooding conditions and were available for 38% of streamgages at the time this graphic was produced. Only publicly available data from the National Water Information System Website was used and some gages are missing gage height even when they have flow.
 

Sources/Usage

Public Domain.

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