Im planning a new development and need to build a retention pond that will hold the 50-year rainfall runoff. How much rain would that be?
Check CLIMOCS for the nearest station to find the maximum daily rainfall to provide a benchmark. Then, interpolate values from the Rainfall-Runoff Maps publication for Oklahoma (USGS 1998 – large set of maps in the OCS Front Office) for the location. Provide rainfall values for all time periods published. Also, the ESE Precipitation Databook publication (thick white & blue book in the OCS library) has peak rainfall intensity tables for some locations in Oklahoma. See “Climate Data Sources” for assistance on pulling CLIMOCS.
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