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PROJECT REVIEW
TOPIC: RAINFALL RUNOFF MODELLING
USING HEC-HMS SOFTWARE
Group members:
Sukrit Malhotra (11BCL1071)
Pushp Aggarwal (11BCL1053)
Project Coordinator:
Dr. Bindhu V.M
IntroductionHydrological Model is a simplified representation of natural system.
Model is necessary for efficient planning and management. It provides
information that can help us to
Be proactive and control a situation at the time of floods
Estimate the increase in the volume.
Regulate floodplain activities
Operate or evaluate existing hydraulic-structures
Studying and simulating rainfall runoff process.
Learning the basic concepts of modelling software
Preparation of draft model
Using different hydrologic elements available
Computing and modelling run off
Objective
Work Procedure
HEC-HMS Model
Cultivated land
CN-71
Residential area,
impervious 20
CN-68
Good condition
grass cover
CN - 61
Model Layout
Sub-basin
Junction
Metrological models
Precipitation data
Control Specification
Basin
Compute simulation run
Results
Method to Compute lossesTo compute the losses(i.e. infiltration, evaporation or other volume losses) we have used “The SCS curve number (CN) loss model”
CN=??
Effect of lag time in hydrographEffect of curve number and impervious percentage
THANK YOU
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