Probability of Extreme Precipitation by Months

by Nicholas J. Markevich, Pacific Gas & Electric Co, United States,
Catalino B. Cecilio, Pacific Gas & Electric Co, United States,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering


Daily rainfall records during the months of October through April at rainfall gaging stations near the Kings River drainage basin in the Sierra Nevada Mountains of central California were analyzed to determine average, peak, and 1000-year return period maximum 1-day and 3-day precipitation by month and to determine the relative probability of the monthly probable maximum precipitation (PMP) estimates derived from Hydrometeorological Report No. 36 (HMR 36). The differences between corresponding rainfall amounts and relative probabilities for the months of October, November, and December through February were tested at the 95% confidence level. The results indicate that the monthly adjustment factors in HMR 36 underestimate the differences between certain months.

Subject Headings: Probability | Precipitation | Rainfall | Drainage basins | Mountains | Hydrometeorology | Gaging stations | Rivers and streams | United States | Nevada | California

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