Preguntas.docx - Review Questions What problems might you...

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Review Questions: What problems might you encounter if you try to do a rainfall frequency analysis on more than 30 years of data? What might be wrong with less than 30 years of data? Why did Dr. Wilks in Cornell’s atmospheric sciences program suggest that 10-15 yrs is what he would recommend for hydrologic engineers? How is a curve number different than a rational method runoff coefficient? Why, if divided by 100, can’t the curve number be interchanged with the rational coefficient? Do you think the 25 year rain storm will cause the 25 yr runoff event? Why? Of what two quantities is the Froude number a ratio? Knowing this, how might one calculate the channel slope at which critical flow occurs? Velocity and depth but really is ratio of kinetic and potential energies V2/2g/d = v/ (gd)^1/2 Why should hourly precipitation data be adjusted if they are used in a frequency analysis for hourly precipitation? Which direction are they adjusted, up or down? In conceptual terms, what are the three types of culvert flow?
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  • Fall '08
  • WALTER,T

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