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Distributed and lumped models in Hydrological models
Hamid Reza Rezaei Javid
IWPCO(Iran Water Power Co.),
Iran
Email: h.javid@iwpco.com, hr9617@yahoo.com
In recent years, advances in Geographic Information Systems (GIS) have opened many opportunities for enhancing hydrologic modeling of watershed systems. With an openness to share spatial information via the Internet from government agencies, commercial vendors, and private companies, coupled with powerful spatial algorithms, the integration of GIS with hydrologic modeling holds the promise of a cost-effective alternative for studying watersheds. The ability to perform spatial analysis for the development of lumped and distributed hydrologic parameters not only saves time and effort, but also improves accuracy over traditional methods. In addition, hydrologic modeling has evolved to consider radar rainfall and advanced techniques for modeling the watershed on a grid level. Rainfall and infiltration can be computed cell by cell providing greater detail than traditional lumped methods. These advanced modeling techniques have become feasible because the consuming data manipulations can now be generated efficiently with GIS spatial operations.
In this paper lumped and distributed models be compared and from result was found that distributed model for hydrologic modeling had better and accurate results from lumped model.
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