Influence Of Hydrologic & Sediment Parameters In Modeling Stream Flow Of Osun River, Osun State Nigeria

Project and Seminar Materials for Civil Engineering CE

Influence Of Hydrologic & Sediment Parameters In Modeling Stream Flow Of Osun River, Osun State Nigeria


Chapter One


Introduction

1.1 Background to the study

The water is the most important natural resource especially in the arid or semi-arid zones that face high population growth, scarcity of freshwater, irregularity of rain- fall, excessive land use change and increasing vulnerability to risks such of drought, desertification and pollution. Thus, the availability and the sustainable use of this resource become the core of the local and national strategies and politics in these regions.

Hydrology is the main governing backbone of all kinds of water movement and hence of water-related pollutants. Understanding the hydrology of a watershed and modeling different hydrological processes within a watershed are therefore very important for assessing the environmental and economical well-being of the watershed. These models can offer a sound scientific framework for watershed analyses of water movement and provide reliable information on the behavior of the system.

The degradation of hydrological resources has made it essential to encourage management practices based on knowledge of spatial and temporal changes in the quantity and quality of water, in order to ensure the suitability of water supplied for different uses. This can be assisted by using hydrological and water quality models to simulate a wide range of processes in hydrographic basins, such as the production of water and sediments and the dynamics of point and nonpoint sources of pollution.

Hydrological models are powerful tools to represent water-resource availability and behavior in drainage basins under many applications, such as climate change, flood, drought, runoff and nutrient movement (Abbaspour et al., 2015). They can assist in the planning and decision-making processes for environment protection and the guarantee of water availability for future uses (Da Silva et al., 2015; Fatichi et al., 2016).

The ability of hydrological model to produce satisfactory predictions is necessarily correlated to adequate sensitivity analysis and model calibration (Song et al., 2015). Hydrological models, such as SWAT, incorporate several parameters (climatic, hydrological and others) obtained theoretically and through field data collection. Some of these contribute greatly to model outputs (sensitive parameters), while others have minor relevance (non-sensitive parameters) (Van Griensven et al., 2006).

Osun is a river that flow southward through southern Nigeria into Lagos lagoon and Atlantic Gulf of Guinea. It is one of the several rivers ascribed in local mythology to have been women who turned into flowing waters after some traumatic event frightened or angered them. Osogbo GPS coordinates are 7˚46’15.74’’N and 4˚33’25.13’’E. Due to the potential of Osun river basin as a major source of water supply, this study will develop a plan that will allow for the sustainable management and treatment of the water in the catchment area.


1.2 Problem Statement

Osun River Catchment main source is one of the major sources of water supply, drinking and commercial purposes. It therefore important to know sensitive hydrologic parameters that contribute and hinder the stream flow out and sediment concentration in the catchment area.


1.3 Aims and Objectives

The main aim of this project is to investigate the use of modeling tool for sensitivity analysis of stream flow hydrologic and sediment parameters.

Specific objectives achieved are:

  1. Simulation of the hydrological process of the watershed using temporal and spatial data.
  2. Prediction of the stream flow and sediments yield of the watershed.
  3. Determine the influence of the hydrologic and sediment parameters on stream flow and sediment yield prediction.

1.4 Justification

Most rivers are ungauged especially in developing countries and therefore prediction of stream flow for sustainable water management is regarded as an alternative. Prediction of stream flow and sediment yield requires many hydrologic and sediment parameters. Also, calibrating and validating such models are quite cumbersome due to many parameters to deal with.

Therefore, it is very important to carry out sensitivity analysis of the modeling parameters to assist modelers in concentrating effort on most sensitive parameters that affect prediction of stream flow and sediment yield.


1.5 Scope of the Study

This research work is to carry out the sensitivity analysis of hydrologic parameters in modelling stream flow of osun river catchment. The analysis will be based on preliminary modelling results obtained from the modelling of the watershed. Parameters of interest are stream flow out and sediments yield with 31years meteorological data for the modeling exercises.

Model calibration and validation were not part of the scope covered in this research work.


1.6 Description of the Study Area

Osun is a river that flow southward through central Yoruba land in southern Nigeria into Lagos lagoon and Atlantic Gulf of Guinea. The Osun River is located within Osogbo Local Government Area of Osun State, Nigeria. It falls within Longitude 7˚46’15.74’’N and latitude 4˚33’25.13’’E. It is one of the several rivers ascribed in local mythology to have been women who turned into flowing waters after some traumatic event frightened or angered them. The map of the study area is as shown in Figure 1.1


Chapter Five


Conclusion and Recommendation

5.1 Conclusion

In this research, SWAT model was successfully applied to simulate stream flow and sediment yield at Osun River, preliminary model showed that the Maximum value of average stream flow was 2,709.81 m3/s in the year 1998 and Minimum average stream flow was 297.17 m3/s in the year 2003. While maximum sediment yield was 80,584.06 mg/l in the year 2007 and minimum sediment yield was 14,045.04 mg/l in the year 1997.

Also, revealed the paramount parameters influencing stream flow and sediment concentrated in the watershed, preliminary result show that curve number (Cn2) has the highest sensitivity with a ranking value of 38.9% for stream flow while linear parameter for calculating sediment routing (Spcon) has the highest sensitivity with a ranking value of 19.16% for sediment concentration in the watershed.


5.2 Recommendation

  1. Further research to be carried out on the validation and calibration of the model to improve the model performance
  2. The result of this research work can be adopted by local authentication of the area for sustainable management of the watershed.

Influence Of Hydrologic & Sediment Parameters In Modeling Stream Flow Of Osun River, Osun State Nigeria


Project Material Download

3,000 Naira


The complete material will be sent to you in just 2 steps.

Quick & Simple…


Step One Purchase

Make payment of ₦3,000: through USSD Transfer, Bank Mobile App, ATM Transfer, or POS Transfer to:

Access Bank PlcAccount No.: 0811003731
Name: Samphina Academy
Account Type: Current

Or Click Here to pay with Debit Card

FOR CLIENTS OUTSIDE NIGERIA:
Click Here to pay with Debit Card ($15)
GHANA – Make Payment of 60 GHS to MTN MoMo, 0553978005, Douglas Osabutey 

  PAY WITH CRYPTOCURRENCY


Step Two Purchase

Send the following details through Text Message or WhatsApp Messenger | +234-8143831497

  • Payment Details 
  • Email Address 
  • Influence Of Hydrologic & Sediment Parameters In Modeling Stream Flow Of Osun River, Osun State Nigeria

The complete material will be sent to your email address after receiving your payment information | T & C Apply


  Contact Our Help Desk


You may also like:

⚠️ Need a different topic? Perform a quick search



Get A Complete Business Plan For Any Business In Nigeria

Business Plan for Businesses in Nigeria

  Business Plans in Nigeria


Influence Of Hydrologic & Sediment Parameters In Modeling Stream Flow Of Osun River, Osun State Nigeria


Disclaimer

This research material “Influence Of Hydrologic & Sediment Parameters In Modeling Stream Flow Of Osun River, Osun State Nigeria” is for research purposes and should be used as a guide in developing your research project / seminar work. For no reason should you copy word for word (verbatim) as samphina.com.ng will not be liable for any who copied the material.

The aim of providing this material is to reduce the stress of moving from one school library to another all in the name of searching for research materials. This service is legal because, all institutions permit their students to read previous projects, books, articles or papers while developing their own works. According to Austin Kleon “All creative work builds on what came before”.

samphina.com.ng is only providing this material “Influence Of Hydrologic & Sediment Parameters In Modeling Stream Flow Of Osun River, Osun State Nigeria” as a reference for your research. The paper should be used as a guide or framework for your own paper. The contents of this paper should be able to help you in generating new ideas and thoughts for your own research. Use it as a guidance purpose only.


How to defend your research work


This is a general guide on how to defend your research work:

1. Prepare For Questions:

If you are preparing for questions that may be asked during your defense, then your answers will flow smoothly and effectively. This will prove your knowledge on the subject e.g “Influence Of Hydrologic & Sediment Parameters In Modeling Stream Flow Of Osun River, Osun State Nigeria“, and strengthening your argument. Ask friends and family, read your work for them to listen to your presentation, and write down questions. You may be lucky the panel will ask you those you have already prepared on.

2. Strong Summary:

Summarizing your chapters will help keep your audience focused because it is easy for a mind to drift, so providing summaries will ensure your panel will follow along, even if they lose focus for a brief moment. Visual aides, such as graphs and power-point presentations can be very helpful. If you are going to use these, make sure you will practice your presentation with them.

3. Be Confident in Your Research Work:

Not knowing your topic “Influence Of Hydrologic & Sediment Parameters In Modeling Stream Flow Of Osun River, Osun State Nigeria” inside out will cause you to struggle and ultimately fail with your defense. You need to know the subject from every angle to ensure you are fully prepared for any question that may come your way.

4. Conclusion:

Reinforce your findings to conclude your defense. The finale of your presentation should focus on proving the work that has been done. You may need to recap on what has changed and remained unchanged, if is necessary.

5 . Listen:

Before you get defensive or recite a particular answer, make sure you truly understand the question being asked. Being a good listener is an important quality, because providing an inaccurate or off-topic answer will also weaken the validity of your paper.

Samphina Academy

Samphina Academy is an Online Educational Resource Center that is aimed at providing students with quality information and materials to aid them in succeeding in their academic pursuit.