Determining A Flood IntensltyModel in Sllghez.Chay Basin Using Environmental Resource Variables

This research deals with a new method of harmonic application of environmental data from research area as well as input functions, (i.e. rainfall and floods as operating agents in basin system), to obtain . a model for estimation of flooding potential in basins Serious consideration was paid to understand relations between environmental factors and effect of input resources such as rainfall . In this relation, applied model made it possible to determine area with iso flooding potential in the region under consideration; Although using mathematical and statistical .methods 'can answer many questions in this field; but what makes it different is that, environmental factors, their complicated relations along with their contribution to flood initiation in path with storms are treated from different points of view.
Analysis of multiple environmental data led to moving from pure statistical definition of flood
phenomenon to quantitative-and qualitative description of flood process to obtain special indexes
according to available standards. Obtained model could be used to predict response of iso potential sites to different storms.
l -Results and achievements of model can be further described as follows:
-Precise understanding of operation system's response to different systems in micro conditions (Iso potential units) as well as macro conditions (hydrologic units) as a new method in understanding of flood initiation process .
-Determination of CN could be possible with introducing of mathematical equations without referring to related tables and graphs.
-Introducing four equations in relation to vegetation cover and land use as a direct parameter in
estimation of CN in different hydrologic soil conditions in research area.
- Introducing of four equations in relation to slope as an independent variable as related to vegetation cover on four different hydrologic conditions in research area.
-Analysis of soils curve numbers in four different conditions on 855 Iso flood potential units.
-Flood hydrograph simulation on hydrologic units and Saghez Chay basin.
2-Applied results of model:
-Development and generalization of SCS method for its improvement as well as speed up of CN
formulation in four different soil conditions.
-Strategic results of this research could be applied to improve sustainable management of water
resources for evaluation of environmental resource as well as determination of flood potential at
different times and conditions.