![]() ![]() Next click the button to open the User Defined Channel screen. To use this channel feature, select User-defined as the Section Type from the drop-down list. You can enter up to 250 unique Station, Elevation points to describe a channel section. The program will automatically import the X, Y coordinates for this section for further modification and will convert it to a User-Defined shape. Once you have defined a Trapezoidal section, you can later select “User-Defined” as the section type. This item will be automatically computed when using User-defined sections. Enter zero for rectangular shapes.Įnter the total depth to be analyzed for this section.Įnter the invert elevation of this section. For a triangular section, enter zero.Įnter the left and right side slopes, z horizontal to 1 vertical, for the channel. Using the Trapezoidal type you can quickly add triangular, rectangular or trapezoidal shapes with varying side slopes.Įnter the bottom width of the channel. Automatically generate geometric data from a TIN SurfaceĬhoose your section type, Trapezoidal or User-Defined, from the drop-down list box.Graphically set the Overbank Stationing.Add elevation adjustments (up or down) to a cross-section.Horizontally flip cross-section data to convert sections looking downstream to looking upstream.Generate section data by interpolating between any two sections.Copy the section data from the previous section.Copy geometric data from one section and paste into another.Up to 250 points can be entered for each section.Ĭhannel Studio allows you to quickly input predefined sections, i.e., Trapezoidal, Triangular or Rectangular as well as User-Defined sections. Cross-Section Geometric DataĬhannel sections are described by specifying X, Y or Station, Elevation points from left to right looking upstream. Reach lengths are not required for Section 1 and the category will be collapsed. Note that if you return to the Model tab and edit the locations of the sections, the program will again enter default reach lengths and you’ll need to make any necessary adjustments.įor most uniformly-shaped cross-sections, the defaults will suffice. ![]() Initially, the program automatically enters equal reach lengths based on the Station difference between sections when you add sections to the model. In some cases, the Channel portion may meander, causing the Channel Reach to be the greatest. The Channel Reach length is longer than the Right Overbank reach length. The Left Overbank distance is longer than the Channel. While these distances are the same between Sections 1 & 2, they vary between Sections 2 & 3 because the channel is curved. These paths are indicated by your stationing inputs for the Left and Right Overbank Stations described later.įor example, the image below shows a channel with Left Overbank, Channel and Right Overbank. These reach lengths are separate from the River Station and should refer to the actual distance the water travels along their respective paths. One for the Left and Right Overbanks and one for the Channel portion of each section. There are three unique reach lengths you can enter. However, you can directly edit this on the input grid for better specificity if needed. The initial River Station is always set from the Model view when you first add your sections. While entering data for the first time, the canvas will automatically display help diagrams to assist in your data entry. Use the buttons to navigate downstream to upstream.īelow shows an example of cross-section data. To enter data, type in the value or select from a drop-down input box, and press or the key. Once selected, the data grid on the right side of your screen will populate with the current data. Sections can be selected by clicking on the Section List to the left. To add section data, first click the X-Sections tab as shown below. This data will be referred to as “Geometric Data” in the remainder of this text. Channel sections are described by specifying X, Y or Station, Elevation points from left to right looking upstream. Once your river model layout is complete, you are ready to add data for each of the cross-sections. ![]()
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