Developing a New HEC-1 Model Using GIS Shapefiles

About the Tutorial

This tutorial illustrates the development of a HEC-1 model using shapefile datasets from GIS. The datasets include rainfall, sub-basins, soils, land use, flow paths (L, Lca, or Tc), and routes. The procedure includes a guide in customizing the data fields for each dataset such as names, data types, and data lengths.  DDMSW evaluates and compiles the model parameters from these shapefile datasets and create a HEC-1 model based on the model network created by the user. DDMSW creates six (6) models for six standard return intervals hardcoded in the program, namely, 2-year, 5-year 10-year, 25-year, 50-year and 100-year storm events.

Data Sets

The data sets include:

  • Flow Paths (L, Lca, or Tc)
  • Land Use
  • Rainfall
  • Routes
  • Soils
  • Sub-Basins

Procedure

The procedure includes a guide in customizing the data fields for each data set such as names, data types, and data lengths. DDMSW evaluates and compiles the model parameters from these shapefile datasets and creates a HEC-1 model based on the model network created by the user. DDMSW creates six (6) models for six standard return intervals hard-coded in the program, namely the following storm events:

  • 2-Year
  • 5-Year
  • 10-Year
  • 25-Year
  • 50-Year
  • 100-Year

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