1. Application of Models in Beles Sub Basin by Moges Berbero Nov 12,2012

2. Presentation outline Background of Beles Sub Basin
Functions of Beles Sub Basin Organization
Why models in the Beles basin
How to use models in the Basin
Application of SWAT model in the Basin
Challenges of modeling work in the Basin

3. Background of Beles Sub Basin
Location
North-west part of the country
East, North-East with Amhara Region
South, West and North-West with BGRS

4. Background of Beles Basin
It covers total catchment area of 14,209 Km2
The catchment area includes some parts of two regional states,
22% of Sub Basin lies in Amhara regional state
78% of Sub Basin lies in Benishangul Gumuz region

5. Background of Beles Basin
Average annual areal rainfall is 1476 mm
Its average annual run-off is around 4,900 million m3(SMEC,2008)
The population within the basin is 372,485

6. Functions of Beles Sub Basin Organization
Serving as an institutional focal point for water resources allocation and management in Beles Sub Basin
Be a repository of the official knowledge base for water resources management data and information in the sub-basins

7. Functions con….
Undertaking research and special studies as required for effective water resources planning and management.
Providing the analytical/modeling expertise and tools to effectively manage the water resources of the sub-basins
Monitoring water resources of Beles Sub-Basin

8. Why models in the Beles Basin?
Assessing both surface and groundwater availability within the sub basin (SWAT and MODFLOW models)
Water resources allocation and planning within the basin for different needs or demands( WEAP or MIKEBASIN models)
Main Beles at Bridge
G.Beles at Mandura

9. Water Resources allocation model(WEAP, Mike Basin)
How to use model out put
Tourism
Water Resources allocation model(WEAP, Mike Basin)
Irrigation
Beles Water Resources
Hydropower
Water Supply
Industrial
Domestic
Environmental

10. Application of SWAT model in the Basin
Input data used for SWAT model set up
Climate data ( )
Precipitation
Min and max temperature
Wind speed and relative humidity
Flow data, both daily and monthly data( )
Land cover and soil
DEM of Beles Basin

11. Hydrometric stations used for SWAT model Calibration
Main Beles at Bridge
Outlet of Beles to Abbay
G.Beles near Mandura

12. Metreological stations used for SWAT model application
Shahura station
Mankush station
Pawe station
Kunzela station
Dangila station
Chagni station
Bullen station

13. Soil classification of the Basin

14. Land cover of the Beles Sub Basin

15. Hydrologic response unit of the Basin(HRU)

16. Sample calibration results for Main Beles at the Bridge

17. calibration results for Gilgel Beles near to Mandura

18. Challenges of modeling work in the Basin
The existing metreological stations within the Basin are not uniformly distributed
The existing hydrometric flow measurements did not cover all the catchment area of Beles Basin
Main Beles at Bridge gauging station( Km2)
Gilgel Beles near to Mandura gauging station(736.6Km2)
There is no detail soil and land cover map of the Basin
Both flow and weather data are full of missing data

19. Thank you very much!!!