QGIS SWAT水文模型教程

1

QGIS Interface for

Prepared by: Yihun Dile, R. Srinivasan and Chris George

This version describes QSWAT version 1.2, which needs SWAT Editor version 2012.10.18.

2

Step by Step Setup for the Robit Watershed, Lake Tana basin

Ethiopia

Contents

1. Environment and Tools Required ........................................................................................... 4

2. Installation............................................................................................................................... 4

3. Structure and Location of Source Data ................................................................................... 6

4. Structure and Location of Output Data ................................................................................... 6

5. Setup for Robit Watershed, Lake Tana Basin ......................................................................... 7

5.1. Watershed Delineation ..................................................................................................... 9

5.4.4. Static visualisation ...................................................................................................... 33

5.4.5. Animation .................................................................................................................... 37

5.4.6. Plotting ........................................................................................................................ 39

5.5. SWAT Output Visualization with SWAT Error Checker ................................................ 44

6 Appendix I ............................................................................................................................ 49

6.1 Adding tables into SWAT and Project databases............................................................ 49

6.2 Preparing daily climatic data for QSWAT ...................................................................... 53

6.3 Preparing landuse and soil look-up tables ...................................................................... 55

7 Appendix II – preparing global DEM data for QSWAT ....................................................... 56

7.1 Introduction ................................................................................................................... 56

3

7.6. Masking a DEM ............................................................................................................. 63

7.7. Large DEMs ................................................................................................................... 66

8 Appendix III: Using a Predefined Watershed and Stream Network ..................................... 69

9 Appendix IV: Installing and Using MPI .............................................................................. 72

9.1 Installing MS-MPI.......................................................................................................... 72

9.2 Configuring QSWAT to use MPI ................................................................................... 73

9.3 Blocking network access ................................................................................................ 73

4

 Text editor (e.g. WordPad, NotePad, NotePad++) that enables you to read and edit ASCII

text files.

 A tool like WinZip that can uncompress.zip files (not needed with recent versions of

Windows)

System requirements for SWAT Editor Version 2012.10.18

 Microsoft Windows XP to 8.1

 Microsoft .Net Framework 3.5

 Adobe Acrobat Reader Version 7 or higher. Acrobat Reader may be downloaded for free

from: http://www.adobe.com/products/acrobat/readstep2.html

on 64-bit machines. It is also currently necessary to use version 2.6 rather than 2.8. From

now on we will use Program Files as a folder name, even though it will be Program Files

(x86) on a 64-bit machine.

 Install SWATEditor 2012 version in its standard place C:\SWAT\SWATEditor. For the

SWAT 2012 version, unzip the installation archive swateditor_install_201210_218.zip (or

a later version if available from http://swat.tamu.edu/software/arcswat/swateditor/) and

double-click on the "setup.exe" program to install the SWAT Editor. This will launch the

SWAT Editor install program. Use the default folder C:\SWAT\SWATEditor as the

installation folder.

The SWATEditor folder will consist of Databases folder, SwatCheck folder,

5

Make sure you have the system requirements listed above for the SWAT Editor to work

properly. Failure to have the above system configuration may result in failure to install the

SWAT Editor or errors in the SWAT Editor interface.

Figure: SWATEditor installation folder (after installing QSWAT)

 Install QSWAT by running QSWATinstall1.2.exe or a later version. This adds some files

to the SWATEditor: a project database and a reference database in Databases,

SWATGraph in the SWATGraph folder, and also stores the TauDEM executables in a new

directory C:\SWAT\SWATEditor\TauDEM5Bin. The QGIS plugin QSWAT is put into the

user's home directory in .qgis2\python\plugins\QSwat, which we will refer to as the

QSWAT directory. The latest version of QSWAT can be downloaded from the SWAT