| dc.creator |
Mulungu, Deogratias M. M. |
|
| dc.creator |
Mtalo, Felix W. |
|
| dc.creator |
Bauwens, Willy |
|
| dc.date |
2016-03-22T11:01:41Z |
|
| dc.date |
2016-03-22T11:01:41Z |
|
| dc.date |
2005-11-14 |
|
| dc.date.accessioned |
2018-03-27T08:40:26Z |
|
| dc.date.available |
2018-03-27T08:40:26Z |
|
| dc.identifier |
Mulungu D. Mtalo F. Bauwens W. Applications of the Soil Water Assessment Tool (SWAT) in Simiyu River Catchment International FRIEND-NILE conference Sharm el Sheikh 12-14 November 2005 www.WRRI\asst\8.htm |
|
| dc.identifier |
http://hdl.handle.net/123456789/1203 |
|
| dc.identifier.uri |
http://hdl.handle.net/123456789/3029 |
|
| dc.description |
The physically based Soil Water Assessment Tool (SWAT) model is applied on the Simiyu
river catchment at Ndagalu outfall, Tanzania. Input data are spatially distributed data set such
as topographical, land cover and soil data, climatic and river flow time series data. The model
was calibrated for the period 1970-1974 based on the availability of coinciding climatic data
and validated in the period 1976-1983. The calibration involved fine-tuning the land coversoil
parameters to match the observed discharge at Ndagalu flow gauging station. The
weather generator tool of the SWAT was used to fill in the missing climatic data and enabled
flow simulation in the periods with missing data. Several model fit techniques and water
balance matching techniques were used to assess model performance. Results and analysis
was presented to show model performances in calibration and validation periods. During
model set-up it was found that the land use (especially vegetation types) classification was a
sensitive issue for the river flow estimation. The study identified optimum parameters for
better discharge simulations. However, since some model parameters were obtained manually
by fine-tuning, in future study the more physical basis of the parameters need to be
considered. Also, the analysis of observed and estimated hydrographs showed that the rainfall
data used is not representative and more rainfall data is required especially in the headwaters
of the catchment so as to have better rainfall representation, which may produce better model
fits. Considering the good results of SWAT in this study and comprehensiveness of the model
in land surface processes representation, the model is very promising for land and water
management studies and expected to give valuable information to land and water resources
managers. |
|
| dc.language |
en |
|
| dc.subject |
Soil Water |
|
| dc.subject |
Assessment Tool (SWAT) |
|
| dc.subject |
Simiyu River catchment |
|
| dc.title |
Applications of the Soil Water Assessment Tool (SWAT) in Simiyu River Catchment |
|
| dc.type |
Conference Paper |
|