Question

write how different flood lines are drawn​

Answer 1

Explanation:

To read a flowchart, you follow the arrows from shape to shape. To draw a line in RFFlow, click on the line in the stencil at the left and then drag the mouse to draw the line in your chart. It is

Answer 2

Answer:

The flood lines indicate the area that will be inundated during a 100-year flood event at the study area. Initially we model a series of “Design Storms” with durations ranging from 1 up to 100 hours (or more, depending on the size and location of the catchment).

Explanation:

• Floodlines was an eight-part podcast miniseries about Hurricane Katrina that was hosted by Vann R. Newkirk II and produced by The Atlantic .
• A floodline is an imaginary line on the ground that denotes the edge of the water during a flood. A floodline delineation includes the analysis of the rainfall, the soils, the vegetation, the river conditions and the river flows.  Hydraulic and hydrological modelling is then used to determine that line.
• In some countries, the word floodplain is used, which is related to floodline but not the same. The floodplain is the area that will flood. The boundary of this area coincides with the floodline.
• The determination of flood lines is done in two steps, 1) modelling a succession of “ design storms ”, each of them with a specific duration (1 hour, 2 hours, 24-hours, etc.) and producing a particular discharge in m³/s and, 2) routing the highest discharge produced in Step 1 through cross sections across representative reaches of the river/streams at the study area, which then assigns an elevation on each side of the centerline of the stream to which the floodwaters would rise

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