Li yangjun, Zhang cheng ,Zheng yanfen,Sun wenjuan
Hydrology and Water Resourse Bureau of Sanmenxia,YRCC
Sanmenxia Henan 472000

Abstract: These years, the silt deposition is very serious in sanmenxia reservoir area in Yellow river, the carrying capacity of flood channel is universally lower and the flood routing principle is changing. According to the channel characteristic and flood routing principle, flood forecasting methods for different reaches in Sanmenxia Reservoir area were reviewed and improved, later on,  the flood forecasting accuracy was greatly improved. The automatization of hydrological information collecting and transmitting will improve modernization of flood forecasting.

Key words: flood forecasting methods, development direction, Sanmenxia reservoir area