Rainfall information is important because of Hong Kong's vulnerability to floods and susceptibility to landslips during heavy rain. 在豪雨发生时，本港很容易受水浸和山泥倾泻威胁，降雨资料故此甚为重要。
Critical precipitation inducing freshet was analyzed and confirmed in this article through the relevant data of mountain torrent disaster and precipitation. 通过分析境内发生的山洪灾害及相应降雨资料，计算出不同区域诱发山洪灾害的临界雨量。
