WaterWatch, Advanced Hydrologic Prediction Service – US flood and rain maps and predictions


WaterWatch for 12 June 2008

WaterWatch is a US Geological Survey online product that gives consolidated river level and flood stage information across the US. The graphic is from 12 June 2008 showing the floods across the midwestern US.


National Weather Service River Observations

A similar set of data (not precisely the same, but overlapping) is kept by the National Weather Service, as part of their Advanced Hydrologic Prediction Service. This has a whole set of comprehensive rainfall measures, which are as useful in drought condition monitoring as they are in flood monitoring.


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This precipitation map image, for instance, shows the last 2 weeks of rain as a percentage of normal – with the extreme rains in Iowa, Wisconsin, and southwestern Michigan sharply contrasted with the dry western Upper Peninsula.

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