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Modern Geomatics Technologies and Applications

1. Introduction
Iran has situated in the west of Asia and is known as a dry and dehydrated

country. Thus, the issue of water is of particular importance. With the increase
in world population and upsurge in standard of living and Environmental

degradation, the requirement for water is also increased. On the other hand,

the missions of water structures are saving water for drinking, agricultural
irrigation, flood control, and power generation; in this content, dams are the

main structures which can be constructed for these purposes.
Masjed-Soleyman dam is just a large rockfill dam with a central clay core

that's been constructed in 2000. This dam is located about 160 km north-east
of Ahvaz, and 25 km north-east of Masjed-Soleyman, in Khouzestan state,

south-west of Iran. It was built on Karoun River at the geographical

coordinates of 32°1'42" N and 49°23'53" E, 26 km downstream of Karoun 1
(Shahid Abbaspour) dam (Figure 1). This dam is rock-filled with vertical clay

core, its height is 177 m above the foundation, the crest length is 497 m, its
width from toe to toe is 780 m, and width of crest is 15 m. The slope of

upstream is 1 to 2 and for downstream is 1 to 1.75. Dam was constructed

between 1995 and 2000 and first filling of the reservoir was on 19 December
2000 (one month after the completion of construction). The embankment

component aggregates, which vary in dimensions from sand particles to
gravels, consist mainly of sedimentary (limestone, sandstone and shale) rocks

(Lahmeyer, 1976). The power station of dam has a maximum potency of 2000

M Watts. Also, the largest spillway in Iran belongs to this dam with the
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capacity of 21700 m /sec.