The hydrological mapping and methods in Azerbaijan (original) (raw)

As Hidrology is science of learning natural water move and distribution laws, their relationships with surrounding environment, qualitative and quantitative changes. Comprehensive study of hidrology has great importance for a proper evaluation of water sources and resouces. Still 5-6 thousand years ago waterworks, irrigation canals, reservoirs, dams and so on. was built and studied in ancient Egypt, Mesopotamia, China, South and Central America, Nowadays, in many countries (Russia, USA, Germany, France, Spain, etc.) hydrological information is printing in annual bulletins and the observational data of the world's rivers is published by UNESCO in special books. These books obtain information about monthly and annual average water fl ow of the 250 rivers. Maps of various river fl ow have been drawn in many countries, including Russia, China, USA, Canada, Australia and others.It should be noted that these maps can be considered to be suffi ciently accurate and reliable because they are designed according to a large number of observation stations.