DDMSW 5.3.0 Tutorial Documents & Related Project Files

The eighteen (18) tutorials were developed to assist DDMSW users on the use of the software in the three core program modules that include hydrology, river mechanics, and storm drainage hydraulics. These materials have been updated to work with Version 5.3.0 of the software. 

The 18 tutorials and their respective supporting data files have been consolidated into one zip file (ZIP). Included in the zip file are the tutorial index file, and a table for reference.

These tutorials were released on July 6, 2016.

  1. New HEC-1 Model
  2. HEC-1 Model Using GIS Data
  3. Project Using Rational Method
  4. NSTPS for Channel Routing
  5. HEC-1 Stand-Alone Input File
  6. Customizing HEC-RAS Table
  7. Models With Custom Storm Event
  8. Using Routing Data From GIS
  9. Impact of Land Use Changes
  10. Total Scour for Bank Protection
  11. Total Scour for Bridge Piers
  12. Sediment Yield Analysis
  13. Riprap Sizing Analysis
  14. Lateral Erosion Analysis
  15. Launch-Able Riprap Design
  16. Evaluation of Storm Drainage
  17. Street Drainage System Analysis
  18. STORMPRO Backwater Modeling

Developing a New HEC-1 Model

About the Tutorial

This tutorial includes important guides in the use of Drainage Design Management System for Windows (DDMSW) software such as accessing helpful document from the Help menu, setting and updating project defaults, setting the paths where model input and output files are saved, and how model data are created and established.

Data Sets

Model development involves the establishment of the following data sets which are entered manually:

  • Diversions
  • Flow Data
  • Land Use
  • Rainfall
  • Routing Reaches
  • Soils
  • Storage Facilities
  • Sub-Basins


The procedure also includes the development of the model network that defines the relationship of the different hydrologic elements (including sub-basins, routing reaches, diversions, storage facilities, and direct flow data) in the model.

DDMSW builds the HEC-1 models for the six standard return periods hard-coded in the program (2-year, 5-year, 10-year, 25-year, 50-year, and 100-year) and generates the flow hydrographs and peak flows associated with those return periods.

Related Documents and Files