Abstract:Huairou reservoir adjacent to huairou city, flood control function is significant. In recent years, there have been many extreme weather events, and the possibility of exceeding the standard floods is large. In order to timely and scientifically manage the flood, minimize the disaster caused by the over-standard flood and ensure the efficient and orderly flood fighting work, this paper discusses the countermeasures against the over-standard flood in Huairou Reservoir.