Wetspa模型是一个基于GIS技术的分布式物理水文模型。引进Wetspa模型，以广东省流溪河水库流域为例,利用流域的DEM、土地利用、土壤等数字化资料, 以ArcView3.2为操作平台，经过模型预处理, 建立了流溪河水库流域的Wetspa模型框架。从流域出口断面1980-2004年的流量资料中选取有代表性的大中小洪水20场，其中15场用来率定参数,另外5场用来验证模拟结果。研究结果表明，Wetspa模型适用于流溪河水库入库洪水的模拟。

A distributed model for water and energy transfer between soil, plants and atmosphere (Wetspa) is a distributed hydrological model based on GIS. This paper introduces Wetspa model for the flood simulation of Liuxihe River reservoir basin. In combination with DEM, land use and soil data, the framework of Wetspa model based on arcview3.2 for the Liuxihe River reservoir basin is established. The parameters of the model are calibrated with 15 times flood, and the model is further validated with the other 5 times flood. The results show that the model can be adaptable for flood simulation of Liuxihe River reservoir.