ARCSWAT TUTORIAL PDF

ArcSWAT extension of ArcGIS creates an ArcMap project file that contains .. In this tutorial we will concentrate on preparing the rest of the input data for. I wish to apply the SWAT tool in modeling the streamflow of a particular river basin, . watch the tutorial series of ArcSWAT here we made step by step setup of. Hello Friends, After long work on SWAT I have made SWAT tutorial, This covering data preparation to final simulation Step by step guide. This is covering how to.

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A prompt box will be displayed asking for verification of the reservoir removal. Open the Reach or Watershed attribute tables to view the calculated characteristics.

In this section, the method based threshold area will be introduced. The Watershed Delineation tool will appear. Double click the mouse left button to complete the polygon. This function plays an important role in determining the detail of the stream network and srcswat size and number of subbasins created. How to Create a Project. To add a reservoir, click on the ADD button and with the cross appearing as mouse pointer, click on the subbasin where the reservoir will be added.

At least one outlet must be selected for delineation. The user can add or remove reservoirs to refine the delineation process. Figure 15 shows the delineated watershed with subbasins.

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ArcSWAT (Texas A&M University)

In order to use the threshold method to delineate the watershed and stream network, the Flow Direction and Accumulation needs to be calculated by clicking the button. The delineated watershed with subbasins will be added to the View. A prompt box will appear to announce completion of the watershed and subbasin delineation.

Stream definition defines both the stream tutoriak and subbasin outlets. However the general procedure is given below for reference.

If the delineation is not satisfactory or if the user wants to select a different outlet for the watershed, click on the Cancel Selection button and repeat. The DEM properties should correctly define the grid size and units.

Choose Load from disk and select the DEM grid located in your disk and click add. After loading DEMthe button will be activated.

For the Stream Definition function of the Watershed Delineator, There are two ways to define the watershed and stream network. The suggested area given in this window is the average are that could be used.

If the wrong subbasin is listed, click No and repeat step 7 1. Inlets represent any point source loading into the study area or the inlets of drainage into the watershed from an upstream area.

If the correct subbasin is listed, click Yes.

The user can change the Z unit to reflect the real situation. This function calculates basic watershed characteristics from the DEM and sub-watershed themes. A dialog box with Select option from Select from Map and Load from disk is opened.

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The reservoir will be placed at the outlet of the subbasin. When completed, you will see the following message: Draw a square around the reservoir to be removed by holding the left mouse button and moving the mouse.

The minimum threshold area is for the entire watershed, not for each sub watersheds that are going to be delineated. Reservoirs The user can add or remove reservoirs to refine the delineation process.

ArcSWAT (Texas A&M University) | UN-SPIDER Knowledge Portal

It also assigns the necessary subbasin identification. The detailed procedures on how to use the Watershed Delineation tool are introduced in the following sections: Do not select an outlet at the upstream of another outlet. Turn on these two extensions. Next step is Outlet and Inlet Definition.

Before proceeding, you have a number of options: If you have selected the Manually Delineate option, then a toolset will appear and allow you draw polygon mask. The threshold area defines the drainage area required to form the beginning of a stream. Draw a box covering the desired outlet locations will set the main Watershed Outlets.

The directory of this Geodatabase is provided by the interface, users should tutoriak change this value.