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Flood forecasting based on
geographical information system
Karim Solaimani
GIS and RS Centre, University of Agriculture and Natural
Resources, P. O. Box 737 Sari, Iran. E-mail:
solaimani2001@yahoo.co.uk.
Tel: (+98) 9111521858.
Accepted 7 September, 2009 |
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Floodplain
management is a recently new and applied method at the river
engineering and is essential for prediction of flood
hazards. On the other hand, for the purpose of managing and
performing all river training practices, it is necessary to
simulate complicated hydraulic behavior of the river in a
more simple way. In this research, steady flow was simulated
along ~4 km end of Zaremrood River (upstream of the Tajan
River) and flood hazard extends derived using HEC-RAS/HEC-geoRAS.
For simulating, first used HEC-geoRAS to define the river
channel and extract cross sections from the TIN, then the
results of pre-RAS within the steady flow data and the
other required data imported to the HEC-RAS for process and
ultimately provided 2-5-10-25-50-100-year inundation
extends. The results indicate that hydraulic simulation by
integrating HEC-RAS model GIS is effective for various kinds
of floodplain managements and different scenarios of river
training practices.
Key
words:
Hydraulic simulation, flood management, Zaremrood
River |
