Development of flood regional models in Gorganrood basin

Irregular distribution of precipitation in time and space in north part of Iran results in frequent flooding. Two extreme floods have occurred in north eastern part of Iran in year 2001 and 2002 (August) which had not been reported till that time. These catastrophes resulted in loss of human and properties. In spite of research and executive works on floods, still flooding occurs in northern part of Iran. Therefore flood disaster management and flood prevention must be revised in this region. Due to insufficient gauging stations in this region, regional flood frequency analysis was applied. For each homogenous region flood model for different return period was developed. Percent areas of NDVI classes besides other parameters were used in developing models as independent variables. The result showed influence of this parameter in some return period on flood