1. PROJECT REVIEW
TOPIC: RAINFALLRUNOFFMODELLING
USING HEC-HMS SOFTWARE
Group members:
Sukrit Malhotra (11BCL1071)
Pushp Aggarwal (11BCL1053)
Project Coordinator:
Dr. Bindhu V.M
2.
3. Introduction
Hydrological 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
Objective
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
5. HEC-HMS Model
Cultivated land
CN-71
Residential area,
impervious 20
CN-68
Good condition
grass cover
CN - 61
6. Model Layout
Basin
Sub-basin
Junction
Precipitation data
Metrological models
Control Specification
Compute simulation run
Results
7. Method to Compute losses
To compute the losses(i.e. infiltration, evaporation or other volume
losses) we have used “The SCS curve number (CN) loss model”
CN=??