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ENCIV7090 & ENCIV4090 – Surface Water Hydrology Assignment

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Added on: 2023-01-21 09:21:28
Order Code: TV396
Question Task Id: 0

Problem 1 (8 marks)
A hypothetical map for a rural catchment near Ballarat, Victoria is shown in Figure 1. Your task is to estimate the runoff hydrograph at the outlet of the catchment for a 10 year ARI using the software RORB. Refer to https://www.monash.edu/engineering/departments/civil/research/themes/water/rorb
to obtain your free copy of this software.

Note:

  •  Make appropriate assumptions (and list these) regarding the impervious fraction of each sub-catchment area along with the initial losses and continuing losses;
  • Use approximate reach lengths between nodes (and list these) noting that sub-catchment nodes are at the centroid;
  • Use Ballarat IFD data (to be obtained from www.bom.gov.au) to estimate the runoff ;
  •  Obtain the runoff hydrograph from the entire catchment;
  •  Check for time of concentration, tc, value and if it is unrealistic, adjust the K value in the model noting that the K value can be as high as 50 or 60.

 Provide a graph of the hydrograph you obtain along with a tabular summary of your outputs.Refer to the RORB user’s manual for additional information.

Problem 2 (8 marks)

Download a copy of HEC-RAS software (available at http://www.hec.usace.army.mil/software/hec-ras/) and its user manual (version 5.0). Complete the example application described in Chapter 4 of the HEC RAS User’s Manual Version 5.0 (February 2016).Submit all of the appropriate project files and results of your work for assessment.

Problem 3 (4 marks)
Summarise your work for questions 1 and 2 in a brief report. This report should include an introduction, documentation of any assumptions made, and neatly present the important results. You must also provide a brief conclusions to your work. The report should be about 5 pages including examples of your results, all discussion, a conclusion and any references you may have made.

  • Uploaded By : Katthy Wills
  • Posted on : January 21st, 2023
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