New models predict peak floods accurately in ungauged watersheds.
The article estimates annual runoff and peak flow at Nazanin catchment in Erbil, Kurdistan Region using different methods. They used SCS method, basin relation, HEC-HMS, and HEC-1 models to estimate runoff. The results show that HEC-HMS and HEC-1 models can be used for generating flood hydrographs in ungauged watersheds.