300983: Surface Water Hydrology

 

 

Order Number			45471455714
Type of Paper			Essay
Writer Classification Level			Undergraduate
Style of Writing			MLA/APA/CHICAGO/
Sources and References			5
Number of Pages			4
Paper Instructions 300983: Surface Water Hydrology Project Brief (Session 2, 2020) Due Date: 4:00pm, Monday 28 September 2020 Online submission using Turnitin Weight: 30% Please note that group submission is changed to individual submission to address the impact of COVID-19 which has been conveyed through announcements during lecture sessions and vUWS postings. Project background In this project, you are required to prepare hydrologic analysis of block of land planned for development (see attached map – based on your student number as explained above). The purpose is to satisfy regulatory requirements and get necessary approvals (from hydraulic and hydrologic perspectives) for development. You will need to collect necessary data (as formulated below) using ARR Vol 2 to construct rainfall patterns and the Bureau of Meteorology site (http://www.bom.gov.au/water/designRainfalls/ifd/index.shtml). Perform detailed hydrologic and hydraulic analyses of the basin before and after the proposed development. Discuss, in detail, the actions you propose so that the regulatory agencies’ requirements are met. You will need to perform analyses by using the basic principles you’ve learnt in Surface Water Hydrology (300983), Hydraulics (300765) and Fluid Mechanics (300762). You will also need to confirm reliability of your results by using the software packages HEC-HMS. The submission must be in the form of a technical report following the formulated steps given below with a brief introduction to the problem, methodology used, your findings, recommendations, and references + all maps/drawings. It is to be typed using Times New Roman size 12 font and double spaced. You will need to submit your report, all associated (Microsoft Excel) spreadsheets and all HECHMS files. Submissions is via Turnitin in vUWS. Please refer the learning guide for marking criteria. Make justifiable and meaningful engineering assumptions, where necessary. Please use the basins provided according to followings: Basin 1 if 0 ≤ X ≤ 3; Use AEP 5% 3-hr storm duration Basin 2 if 3 ˂ X ≤ 7; Use AEP 1% 3-hr storm duration Basin 3 if X > 7; Use AEP 10% 3-hr storm duration For example, use Basin 2, AEP 1% 3-hr storm duration for X = 7 if your student ID is 12345678. 2 | P a g e Basin 1 (3 sub-basins) Centroid of Basin 1 is as follows: Lattitude = 31.073⁰ South Longitude = 151.275⁰ East Note: 1 and outlet are outlets of three Sub-basins Use the scale shown in the figure to estimate the areas Basin 2 (3 Sub-basins) Centroid of Basin 1 is as follows: Lattitude = 31.075⁰ South Longitude = 150.810⁰ East Note: 1 and outlet are outlets of three Sub-basins Use the scale shown in the figure to estimate the areas 3 | P a g e Basin 3 (3 Sub-basins) Centroid of Basin 1 is as follows: Lattitude = 33.063⁰ South Longitude = 150.606⁰ East Note: 1, 2 and outlet are outlets of three Sub-basins Use the scale shown in the figure to estimate the areas Step 1: Physical parameters estimation Using the scale provided in basin delineation, estimate (an approximate estimation will be enough) the area of each sub-basin, compute the total area of the basin and estimate the channel length. Step 2: Rainfall hyetograph construction Use the Bureau of Meteorology web site (http://www.bom.gov.au) to generate the IFD curves for your catchment. Use the 2016 IFD and the latitude and longitude stated in the figures (for your basin) to generate IFD information for your site. Use % AEP as allocated above and 3-hr storm for further analysis. Include both IFD table and IFD curves in your report. Generate total rainfall hyetograph for the storm generated in above step (you need to use ARR Data Hub web site, https://data.arr-software.org/). Include total rainfall hyetograph, both table and histogram in your report. Step 3: Rainfall Excess hyetograph construction Now use initial and continuing loss model to construct rainfall excess hyetograph. You need to extract the initial and constant loss values from the ARR Data Hub web site. Make necessary 4 | P a g e adjustments, if required. You will need to explain how you achieved your result and include this in your report. Graphical representation suffices here. For post-development condition, assume that both the initial loss and continuing loss will be reduced by 50% for the sub-basin you’re proposing to develop. Remember you’re developing only one of the three sub-basins; therefore, loss values and rainfall excess will change only for one subbasin. Step 4: Desired duration unit hydrograph construction You will be generating a desired unit hydrographs for your sub-catchments using the 5-minute unit hydrograph for a basin given in the table below and making reasonable assumptions as follows: Use of spreadsheet is required to save time, as the process involves repetitive computations. You will need to include your spreadsheet. A 5-minute unit hydrograph for a basin of 750 hectares is given in the table below. Time (min) 0 5 10 15 20 25 Discharge(m3 /s) 0 0.85 1.95 3.55 4.31 3.65 Time (min) 30 35 40 45 50 55 Discharge(m3 /s) 2.95 2.15 1.59 1.15 0.85 0.65 Time (min) 60 65 70 75 80 85 Discharge(m3 /s) 0.45 0.35 0.25 0.2 0.1 0 Compute ordinates of desired unit hydrographs for your sub-basins using above 5-minute unit hydrograph. Consider using the basin area as a scaling factor. For example, if your sub-basin area is 350 hectares then consider multiplying those ordinates from above table by 0.5. Note: You will need to construct up to three unit hydrographs depending upon the size of subbasins. You will need to explain the process you followed in your report. Make sure to verify your results by checking volumes after each computation. 5 | P a g e Step 5: Storm hydrograph computation Construct storm hydrograph for each sub-basin using rainfall excess (step 3) and respective Δt-hr unit hydrographs generated above in step 4. The constructed hydrographs are the responses at the outlet of each sub-basins under the existing conditions. Step 6: Network diagram construction, routing through channel(s) and computation of hydrograph at the outlet of the whole basin. Construct the hydrologic network to show connectivity of sub-basins, channels and reservoirs (if any). You will require to extract channel properties for routing the hydrographs through channels using Muskingum routing method. For this, assume the following. Use weighting factor, x = 0.3 Use average channel velocity 1.1 m/s to estimate average flow velocity in the channel. Use this average flow velocity to estimate travel time constant, K. Use these values of x & K to route relevant hydrographs through respective channel(s) and compute the hydrograph at the outlet of the basin. This completes generation of pre-development hydrograph at the basin outlet. Step 7: Construction of Post-development hydrographs Consider developing one of the sub-basins by proposing the following: Both initial loss and continuing loss will be reduced by 50%. 5-minute unit-hydrograph will have the following characteristics. ➢ Peak discharge will increase by 30% ➢ Time to peak will decrease by 15% ➢ Time base will decrease by 25% Use the above adjustments to scale and generate meaningful post-development 5-min unit hydrograph. You will have to ensure that the volume balance works out. This may require a few iterations. You will then need to construct Δt -hr unit hydrograph (post-development) for the sub-basin being developed and use this to generate post-development response from the basin. Step 8: Comparison of Pre- and Post-development hydrographs Now compare the pre-development and post-development hydrographs. Present your results in graphical form and present salient values in a tabular form. Analyse and discuss your results. Next, propose a solution that will ensure that the peak of the post-development hydrograph at the outlet does not exceed the peak of the pre-development hydrograph at the outlet. You may 6 | P a g e have to design a reservoir incorporating outlet structures to achieve this. If you’re to use this approach, you will need to route the post-development hydrograph through the reservoir. You will need to discuss your strategy, provide the size of the reservoir and the details of outlet structures in your report. Step 9: Use of HEC-HMS to verify your results This is the last step. You will use HEC-HMS (ver. 4.3) to verify your results. You will need to include all HEC-HMS files in your submission. Best Wishes!
	Distinguished (100%)	Proficient (85%)		Basic (70%)	Below Expectations (50%)	Non-Performance (0%)
Thesis Statement	Raises the strongest   objection to the thesis presented in the assignment. The objection is strongly grounded in research and logical reasoning.	Raises a plausible objection to the thesis presented in the assignment. The objection is mostly grounded in research and logical reasoning.		Raises an objection to the thesis presented in the assignment. The objection is somewhat grounded in research and logical reasoning.	Attempts to raise an objection to the thesis presented in the assignment. The objection is minimally grounded in research and logical reasoning.	The objection to the thesis is either nonexistent or lacks the components described in the assignment instructions.
Counter Argument	Provides a strong, thorough rebuttal to the objection. The rebuttal effectively demonstrates that the thesis can withstand the objection and applies the principles of charity and accuracy.	Provides a rebuttal to the objection. The rebuttal mostly demonstrates that the thesis can withstand the objection and mostly applies the principles of charity and accuracy.		Provides a limited rebuttal to the objection. The rebuttal somewhat demonstrates that the thesis can withstand the objection and somewhat applies the principles of charity and accuracy.	Attempts to provide a rebuttal to the objection; however, the rebuttal minimally demonstrates that the thesis can withstand the objection and does not apply the principles of charity and accuracy.	The rebuttal is either nonexistent or lacks the components described in the assignment instructions.
Conclusion	Provides clear and concise closing remarks that comprehensively summarize the essay. The remarks consider the broader controversy and/or further research that could offer additional insight into the moral solution of the business problem.	Provides closing remarks that summarize the essay. The remarks mostly consider the broader controversy and/or further research that could offer additional insight into the moral solution of the business problem. The closing remarks are somewhat unclear.		Provides closing remarks that minimally summarizes the essay. The remarks minimally consider the broader controversy and/or further research that could offer additional insight into the moral solution of the business problems. The closing remarks are unclear and/or vague.	Attempts to provide closing remarks that summarize the essay; however, the remarks do not consider the broader controversy and/or further research that could offer additional insight into the moral solution of the business problem. The closing remarks are unclear and vague.	The closing remarks are either nonexistent or lack the components described in the assignment instructions.
Written Communication: Context of and Purpose for Writing	Demonstrates methodical application of organization and presentation of content. The purpose of the writing is evident and easy to understand. Summaries, quotes, and/or paraphrases fit naturally into the sentences and paragraphs. Paper flows smoothly.	Demonstrates sufficient application of organization and presentation of content. The purpose of the writing is, for the most part, clear and easy to understand. There are some problems with the blending of summaries, paraphrases, and quotes. Paper flows somewhat smoothly.		Demonstrates a limited understanding of organization and presentation of content in written work. The purpose of the writing is somewhat evident but may not be integrated throughout the assignment. There are many problems with the blending of summaries, paraphrases, and quotes. Paper does not flow smoothly in all sections.	Organization and presentation of content are extremely limited. The purpose of the writing is unclear. There is little or no blending of summaries, paraphrases, and quotes. Paper does not flow smoothly when read.	The assignment is either nonexistent or lacks the components described in the instructions.
Written Communication: Control of Syntax and Mechanics	– Displays meticulous comprehension and organization of syntax and mechanics, such as spelling and grammar. Written work contains no errors and is very easy to understand.	Displays comprehension and organization of syntax and mechanics, such as spelling and grammar. Written work contains only a few minor errors and is mostly easy to understand		Displays basic comprehension of syntax and mechanics, such as spelling and grammar. Written work contains a few errors which may slightly distract the reader.	Fails to display basic comprehension of syntax or mechanics, such as spelling and grammar. Written work contains major errors which distract the reader.	The assignment is either nonexistent or lacks the components described in the instructions.
Written Communication: Required Formatting	Accurately uses required formatting consistently throughout the paper, title page, and reference page.	Exhibits required formatting throughout the paper. However, layout contains a few minor errors.		Exhibits limited knowledge of required formatting throughout the paper. However, layout does not meet all requirements.	Fails to exhibit basic knowledge of required formatting. There are frequent errors, making the layout difficult to distinguish as required style.	The assignment is either nonexistent or lacks the components described in the instructions.
Written Communication: Word Requirement	The length of the paper is equivalent to the required number of words.	The length of the paper is nearly equivalent to the required number of words.		The length of the paper is equivalent to at least three quarters of the required number of words.	The length of the paper is equivalent to at least one half of the required number of words.	The assignment is either nonexistent or lacks the components described in the instructions.
Written Communication: Resource Requirement	Uses more than the required number of scholarly sources, providing compelling evidence to support ideas. All sources on the reference page are used and cited correctly within the body of the assignment.	Uses the required number of scholarly sources to support ideas. All sources on the reference page are used and cited correctly within the body of the assignment.		Uses less than the required number of sources to support ideas. Some sources may not be scholarly. Most sources on the reference page are used within the body of the assignment. Citations may not be formatted correctly.	Uses an inadequate number of sources that provide little or no support for ideas. Sources used may not be scholarly. Most sources on the reference page are not used within the body of the assignment. Citations are not formatted correctly.	The assignment is either nonexistent or lacks the components described in the instructions.