Implementation of a one-dimensional hydrodynamic model for the Middle Paraguay River Basin

Takahashi, Roberto Hiroshi

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https://hdl.handle.net/2142/92981 Copy

Description

Title

Implementation of a one-dimensional hydrodynamic model for the Middle Paraguay River Basin

Author(s)

Takahashi, Roberto Hiroshi

Issue Date

2016-07-22

Director of Research (if dissertation) or Advisor (if thesis)

Garcia, Marcelo H.

Department of Study

Civil & Environmental Eng

Discipline

Civil Engineering

Degree Granting Institution

University of Illinois at Urbana-Champaign

Degree Name

M.S.

Degree Level

Thesis

Keyword(s)

• HEC-RAS
• Hydraulic model, Hydrodynamic model, Hydrologic frequency analysis
• one-dimensional
• Paraguay River
• topo-bathymetry
• waterway

Abstract

A steady 1D hydraulic model (HEC-RAS) was implemented for the Middle Paraguay River Basin (MPRB), which comprises a reach between Porto Murtinho, Brazil, and Asunción, Paraguay. In order to prepare the model, first the topo-bathymetry was prepared by digitizing more than 10,000 depth points from available nautical charts and scaling them to a consistent geographic reference system. The main features such as the cross sections, river reach length, flow path and ineffective flow areas were created with the aid of HEC-GeoRAS and imported to HEC-RAS to create the geometry file. A hydrological statistical analysis was conducted to prepare the input design flows from data that corresponds to Porto Murtinho and Asunción fluvial stations. Finally, the finished model comprises a river reach of approximately 635 kilometers, more than 200 cross sections with 3,100 meters of spacing, and calibrated Manning's n value of 0.0245 for the main channel and a value of 0.04 for the floodplain. The simulation results, such as the water surface profiles, were processed by HEC-GeoRAS in ArcGIS to prepare floodplain maps for the entire reach.

Graduation Semester

2016-08

Type of Resource

text

Permalink

http://hdl.handle.net/2142/92981

Copyright and License Information

Copyright 2016 Roberto Hiroshi Takahashi

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