2.3 An Automatic Dam Design 
Process 
User-friendly, flexibility, and 
accuracy are the major concerns that 
have been taken into account to design 
an automatic dam design process. The 
whole process consists of five steps as 
followings: 
1) A contour map automatic 
extraction. 
2) Parameters selection for a 
given standard dam cross section. 
3) Drawing a longitudinal 
axis for a dam on a contour map. 
4) Automatic calculation and 
drawing to provide all kinds of 
information. 
5) Review and saving files. 
Steps 1 to 4 only require that an 
engineer moves a computer mouse. 
Step 5 requires that an engineer inputs 
a file name to save all output. 
2.4 A Reservoir Height-Area- 
Volume Calculation module 
A reservoir capacity has 
highly correlation with its height and 
where it 1s located. To put a reservoir 
at a certain place is very simple. To 
calculate area of every single contour 
line and total water capacity are quite 
time consuming and labor intensive. A 
reservoir height-area-volume 
calculation module was developed last 
year. This module requires that an 
engineer draws a line to indicate 
where a reservoir will be and inputs 
56 
a proposed water height. Then, the 
module calculates area, volumes 
automatically and provides statistics 
and charts for further review. 
2.5 A Geographic Information 
System for Dam Site Selection 
A self-developed geographic 
information system was developed last 
year for another dam site selection. 
Some modifications have been made 
to the GIS. Inquiry, overlay analysis, 
and statistics manipulation are basic 
functions provide by the GIS. 
3. RESULTS AND 
DISCUSSIONS 
3.1 Cross Sections 
Cross sections were 
automatically generated at certain 
intervals and as many as 30 cross 
sections can be drawn. Every cross 
section has to adjust itself in order to 
fit on its base ground. Usually they fit 
quite well. An engineer has to examine 
every cross section carefully. 
3.2 Cutting and Filling Calculation 
Cutting and filling for every 
single cross section were calculated by 
its material types. Tables of cutting 
and filling were provided 
automatically. 
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