Conclusions
Having an overall look at Gorganroud watershed, one
can mention the necessity for the protection of forests,
conducting watershed projects and reviving the vegetation
with respect to the density of vegetation and animals, preventing changes to land usage and sloppy lands from forest to the agricultural lands, preventing erection of roads
and highways, strategic environmental assessments, and
environmental impact assessment. The purpose of this study is to determine the subwatersheds of Gorganroud
watershed exposed to high flood risk using the ArcGIS
software. As far as the literature search reveals, most of
the flood risk studies are based on flood plain, flood
prone hazard, and the probability of flood occurrence.
In this research, however, six sub-watersheds of
Gorganroud were more completely investigated by taking into account the overuse layer and flood hazard intensity as important factors in the flood risk of the region,
which in turn can be an effective step toward determining
the risk factors of the watershed as well as ascertaining
the high risk subwatersheds to help prevent and harness
their destructive flooding and impede the annual problems of similar watersheds. In future studies, it would be better to take other flood related factors (such as environmental ones) into account in order achieve a more
comprehensive risk system. Furthermore, various organizations involved in flooding issues can be identified, and
their roles in preventing flooding in the region can be
determined.