Long Term Hydrologic Modeling for Simiyu Watershed, Tanzania Using Hydrologic Simulation Program-Fortran (HSPF)
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Date
2005-11-14
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Abstract
Simiyu watershed is one of the relatively mid-size river basins draining into Lake Victoria.
The objective of this paper is to investigate the hydrologic response and to build a hydrologic
model for the watershed. Hydrologic Simulation Program-Fortran (HSPF) and Watershed
Modeling System (WMS) are used to build a long term model for the basin. WMS is used to
analyze digital elevation and land use data as a pre-processor whereas HSPF is used to
simulate daily stream flows. The initial model run indicated a need for calibration. Some
model parameters are, thus manipulated to obtain a better fitting model. The calibrated model
is, then, validated on a different data set. Statistical comparisons for calibrated and validated
model showed no evidence of a great difference between the simulated and observed data.
Hence, the model can be used for future runoff predictions in the basin. On the other hand,
continuous enhancement efforts are required to improve the model predictive power.
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Keywords
Hydrologic modeling, Hydrologic Simulation Program-Fortran (HSPF), Simiyu Watershed, Tanzania
Citation
Ahmad M. Salah., Deogratias M. M. Mulungu., & Felix W. Mtalo,. (2005). Long Term Hydrologic Modeling for Simiyu Watershed, Tanzania Using Hydrologic Simulation Program-Fortran (HSPF) International FRIEND-NILE conference Sharm el Sheikh 12-14 November 2005, www.WRRI\asset\36.htm