Determination of Hydrologic Frequency Factor

by Ven Te Chow, (M.ASCE), Prof. of Hydr. Eng.; Univ. of Illinois, Urbana, Ill.,

Serial Information: Journal of the Hydraulics Division, 1959, Vol. 85, Issue 7, Pg. 93-98

Document Type: Journal Paper


Graphical method for determination of frequency factor in log-normal distribution of hydrologic data is described; graphical procedure is simpler and it produces results with less effort than analytical method; method described is illustrated with numerical example.

Subject Headings: Numerical methods | Hydrology | Graphic methods | Hydrologic data | Frequency distribution | Probability distribution | Numerical analysis

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