Comparison of Statistical Methods of Runoff Volume Control Indexes at Home and Abroad
Volume capture ratio of annual rainfall and annual rainfall event capture ratio are typical indexes of runoff volume control. Guide Statistical Method, Pondrisk Statistical Method and Percentile Function Statistical Method are usually used to determine their value at home and abroad. The paper summarized the basic principle and statistical process of the three statistical methods. With a view to provide reference for determining the size of rainwater source control facilities reasonably, examples are given to analyze the advantages, disadvantages and applicable conditions of them.
volume capture ratio of annual rainfallannual rainfall event capture ratiourban rainwaterrunoff coefficientstatistical method