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

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.

Name thesis:degree_name

M.S.

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Civil Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2016

Author dc:creator

• Takahashi, Roberto Hiroshi

Contributors dc:contributor

• Garcia, Marcelo H.

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

Statement dc:rights

• Copyright 2016 Roberto Hiroshi Takahashi

Language dc:language

en

Handle dc:identifier

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

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/92981