Abstract：There are significant differences in various versions publications on characteristic parameters of flood diversion/detention areas around Wuhan,such as the surface area and storage capacity.In this paper, calculation precision of several methods is compared for surface area and storage capacity,and characteristic parameters of flood diversion/detention areas around Wuhan are verified using high-precision DEM.The results show significant differences between review values and planning values,and there are some unreasonable characteristic parameters of bottom water level in flood diversion/detention areas,especially obvious differences in the storage area of Zhangduhu flood diversion.Therefore,it is necessary for further review on the calculation and analysis for characteristic parameters of flood diversion areas around Wuhan.It's also revealed that flood diversion/detention areas around Wuhan may have larger flood storage capacities.This study provides reliable basic information for the relevant planning revision.
2018, Vol. 28 
