The streams will be imported from Streams.shp. Some of their properties will be edited after the streams are imported. All the streams are on the top layer. You can use the OBJECTNAME attribute to assign the names of the imported objects.
Screen capture of the Import Shapefile dialog box showing the OBJECTNAME attribute being used to specify the names of the imported objects.
When assigning the stream attributes, the status should be set to Active, and the INFLOW attribute can be used to specify the flow rate of water into the stream segments. The roughness should be set to 0.03, and the Upstream fraction should be set to 1. The default formula for the reach length can be used. The attributes WIDTH, THICK, and K can ge used to specify the reach width, streambed thickness, and hydraulic conductivity respectively.
Screen capture of the Import Shapefile dialog box being used to import stream segments.
Gradient
After importing the four stream segments, open each of them in the Object Properties dialog box. Set the gradients for the segments as follows.
Object Name |
Gradient |
Seg1 |
0.0018 |
Seg2 |
0.0022 |
Seg3 |
0.0017 |
Swg4 |
0.0024 |
Downstream Segment
Set the downstream segments of both Seg2 and Seg3 to Seg4.
Streambed Top Elevations
We will use the function InterpolatedVertexValue to specify the elevations of the streambed top. Add vertex values to the upstream and downstream ends of each segment. See the Vertex Values Dialog Box for instructions on how to add vertex values. Use "Elevation" as the key for both the upstream and downstream elevations. Then edit each object in the Object Properties dialog box and set the formula for the stream top to InterpolatedVertexValue("Elevation").
Object Name |
Upstream Elevation |
Downstream Elevation |
Seg1 |
49 |
45 |
Seg2 |
44.5 |
34 |
Seg3 |
41.5 |
34 |
Swg4 |
34 |
27.2 |
