SIMILAR RAINFALL RUNOFF PROCESS SEARCHING METHOD BASED ON RAINFALL TIME DISTRIBUTION HISTOGRAM

A similar rainfall runoff process searching method based on a rainfall time distribution histogram. The method comprises the steps of: S1, collecting event rainfall runoff data of a known drainage basin; S2, unifying time scale and making an original rainfall time distribution histogram set; S3, cropping the original rainfall time distribution histogram set; S4, dividing the rainfall time distribution histogram set in S3 into a search set and a test set; S5, specifying an object in the test set that intends to search for a similar event, and using a difference hash algorithm and a mean hash algorithm to calculate a similarity between the object and each object in the search set; and S6, using rainfall similarities as runoff similarities to obtain the first several similar rainfall runoff processes. In a similar rainfall runoff searching method of the present invention, by means of rainfall information, similar historical runoff processes are searched for, and the found similar runoff processes can be used for