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Mr. Jeffrey McClenathan, P.E., M.ASCE

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RE: Rainfall/Streamflow in Central Texas

Posted By Jeffrey McClenathan 09-14-2017 11:38 PM
Found In Egroup: Environment, Coasts, Oceans, & Infrastructure \ view thread

Just to try to clear up a few items mentioned in this thread. 1. The likelihood of seeing one or more floods over a period of time can be computed using the binomial distribution (see Bulletin 17B Page 10-1 for the equation and Page 10-3 for the computed values). For 1% annual chance exceedance event ...

RE: Oroville Dam - worst case scenarios

Posted By Jeffrey McClenathan 02-16-2017 07:48 PM
Found In Egroup: Environment, Coasts, Oceans, & Infrastructure \ view thread

There are a couple potential failure mode scenarios for a concrete spillway like Oroville. They are cavitation as you discussed and stagnation pressure (sometimes referred to as hydraulic jacking). Both require an offset to occur in the spillway with the offset being higher on the downstream side of ...