Hydro-Climate Symposium

Oral

393576 - Stationarity of the Temporal Distribution of Rainfall

Wednesday, June 6
10:30 AM - 12:00 PM
Location: Lake Superior B

The time distribution of rainfall is a critical element of hydrologic analysis. The location and magnitude of the period of maximum rainfall intensity greatly impacts the resulting runoff computations. More intense rainfall has been predicted as a result of climate change. Fifty National Weather Service rainfall gauging stations in southern Missouri and select stations throughout the United States were analyzed for changes in the distribution of rainfall with respect to time. Each gauge has a period of record of 60 years or greater. The non-dimensionalized, annual exceedance series, of 24-hour duration rainfall events were analyzed for stationarity of both the location and the magnitude for the period of the maximum fraction of rainfall. The analysis will show how these changes, if any, impact the temporal distribution of design rainfall used in hydrologic analysis.

Joseph P. Wilson, PE, PH, DFE

Owner
Wilson Hydro, LLC

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393576 - Stationarity of the Temporal Distribution of Rainfall



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