But this transportation depends upon the how much area is available to the river for carrying the water downstream. The High Atlas is the biggest mountain range in North Africa. This area covers some of the most beautiful regions of Morocco, Algeria and Tunisia. There are a number of streams flowing with volumes of water downstream. Cross section of the channel of stream can be depicted as in fig-1 below;
As the stream approaches leaves the hill areas and reaches the plain areas its width tend to increase owing to spread of the river. But at the same the depth also varies. The depth may become more or slightly less, but generally there is no drastic reduction in depth. In addition the average speed of the river also slows down in plain areas.
Efficiency of a water channel is determined by the amount of water it carries along. The channel works as a conduit for water. Cross Sectional Shape of the channel keeps varying with position in the stream, and discharge. The channel becomes deep at places where the velocity of river is high and results in deeper penetration. In general both width and depth increase downstream with increase in discharge downstream. The channel will be termed as most efficient at places where it can carry the maximum amount of water.
Tourism plays an important role in understanding the region, the country, its people and the region. Tourism is also an integral part of the economy of Morocco. After the terrorist attacks against Casablanca Moroccan economy was badly hit as the inflow of tourists decreased. The country is now gradually recouping the lost opportunities with gains in this major industry. i.e. The first direct economic consequences of the terrorist attacks against Casablanca are already visible in Morocco's major industry; the tourism trade. The High Atlas Mountains in Morocco are a major attraction for tourism and trekking events. The Atlas Mountains and Morocco's imperial cities are the main centres of attractions for Morocco. Besides the continuing efforts of the local government, in 2003, a USAID contractor (Chemonics International), selected southern High Atlas Mounta