Contents
Approval sheet………………………………………………………………………………………………………………………………………..i
Declaration……………………………………………………………………………………………………………………………………………ii
Abstract………………………………………………………………………………………………………………………………………………..iii
Acknowledgment………………………………………………………………………………………………………………………………..iv
List of figures……………………………………………………………………………………………………………………………………..vii
list of tables……………………………………………………………………………………………………………………………………….vii
List Acronyms……………………………………………………………………………………………………………………………………viii
List of symbols………………………………………………………………………………………………………………………………….viii
1. Introduction ............................................................................................................................................. 1
1.1 Statement of problem ....................................................................................................................... 3
1.2 Objective of the Research ................................................................................................................. 4
1.2.1 General Objective ...................................................................................................................... 4
1.2.2 Specific Objectives ..................................................................................................................... 4
1.2.3 Research question ...................................................................................................................... 4
1.3 Significance of the study .................................................................................................................. 5
1.4 Scope of the study............................................................................................................................. 5
1.5 Description of Study area ................................................................................................................ 6
1.5.1 Land form of study area ............................................................................................................ 6
1.5.2 Climate of study area ................................................................................................................. 7
1.5.3 Soil type of study area................................................................................................................ 7
2. Literature View ....................................................................................................................................... 8
2.1 Run Off Modeling ............................................................................................................................. 8
2.2 General Overview of Hydrological Models..................................................................................... 8
2.2.1 Types of Hydrological Models ................................................................................................ 10
2.3 Description of Soil and Water Assessment tool (SWAT Model)................................................ 10
2.3.1 SWAT model application ....................................................................................................... 11
2.3.2 Benefits of SWAT model approach ........................................................................................ 13
2.3.3. Hydrology simulation process of watershed ......................................................................... 14
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2.4 SWAT CUP..................................................................................................................................... 19
3. methodology.......................................................................................................................................... 20
3.1 Introduction ..................................................................................................................................... 20
3.2 materials and methodology ............................................................................................................ 20
3.2.1 data collection ........................................................................................................................... 20
3.2.2 Input data preparation, processing and analysis .................................................................. 21
3.2.3.Model Setup .............................................................................................................................. 22
3.2.4 Model Calibration and Validation......................................................................................... 22
3.2.5 Model performance evaluation criteria ................................................................................. 23
3.2.6 sensitivity analysis .................................................................................................................... 25
3.3 expected out put .............................................................................................................................. 25
3.4 Activity schedule ............................................................................................................................. 26
3.5 Financial Breakdown ...................................................................................................................... 26
4.Conclusions And Recommendation...................................................................................................... 27
References .................................................................................................................................................. 28
vi
List of figures
Figure 1: location of study area ................................................................................................................ 6
Figure 2:SWAT model set up flow diagram ............................................................................................... 22
List of tables
Table 1:major land use type of Nashe watershed ........................................................................... 7
Table 2 Activity schedule of study ............................................................................................... 26
Table 3:Financial breakdown of study.......................................................................................... 26
vii
List of Acronyms
ARS
Agricultural research service
DEM
Digital Elevation Model
FAO
Food Agriculture Organization
GIS
Geographic information system
HRU
Hydrologic Response Unit
Km²
Square Kilometer
LULC
Land use land cover
LULCC
Land use land covers change
OADB
PET
Oromia Agriculture and Development Bureau
Potential evapotranspiration
SCS
Soil conservation services
SWAT
Soil Water Assessment Tool
SWAT CUP
Soil and water assessment tool calibration uncertainty program
List Of Symbols
E
East direction
Km²
Square Kilometer
mm
Millimeter
M
Meter
N
North direction
r²
regression coefficient
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