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GIS Based Reservoir Planning for the Souss Basin, MoroccoBy Kwabena Asante and David R. Maidment ABSTRACT This research was undertaken to develop a map-based surface water simulation
model of a river basin, incorporating the operation of reservoirs. The
Souss River in Morocco and the three major reservoirs located within
the basin were used as the study case in the research which focused
on simulating the effects of reservoirs on flow in the basin. A surface
water simulation program developed at the University of Texas at Austin
was customized to enable it to simulate the operation of reservoirs
with variable monthly demands. The program was developed in the object-oriented
programming language, Avenue, of the GIS software ArcView. Rainfall
data from 48 rain gages stations spanning a 60 year period from 1935
to 1995 were processed into daily and monthly time series. Flow time
series were also generated from runoff data collected at 6 gauging stations
in the basin. Historical operation data from each of the three Souss
reservoirs were also processed into time series and incorporated into
the simulation to enable basin response to be predicted accurately.
The effects of temporal scale on modeling effort and results were also
explored by performing daily and monthly simulations. An ArcView extension
called DAMS was constructed to enable the user to insert and remove
dams as required. The extension includes preprocessing programs for
creating reservoir operation and regulation tables, varying monthly
water allocations and setting initial reservoir storage. It also contains
a postprocessor for generating a summary of performance of the reservoirs
during the simulation period. The reservoir simulation was successfully
completed and recorded storage levels were successfully reproduced using
inflow data recorded in the reservoir operation tables. However, reservoir
inflows generated by the surface water simulation model did not closely
resemble those recorded in the operation tables, particularly during
periods of highly variable flow. The highlighted links that follow are connected to Adobe pdf files of the corresponding material. To view them you must have the Adobe Acrobat Reader 3.0. View the Report...(1.0MB)
These materials may be used for study, research, and education, but please credit the authors and the Center for Research in Water Resources, The University of Texas at Austin. All commercial rights reserved. Copyright 1997 Center for Research in Water Resources. |
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