mode means the order management.This term is used to denote the order in many spheres of human activity, as well as in the surrounding nature.One example of this is the regime of the river.But if a person sticks to a certain way of life routines, the regime of the river, he often takes a supervisory position - says fluctuations that occur in the life of the river, and only in some cases, may interfere with the regime of the watercourse in order to change.
Any object can be described by the outside world, giving him characteristic.Including describes the objects and surface water - oceans, seas, lakes, rivers, swamps.It called such a characteristic hydrological.It necessarily includes the hydrological regime of the river - a set of unique features that change the status of the river in time.
hydrological regime is manifested in daily, seasonal and long-term fluctuations in water level and water content (together, this makes water regime), ice phenomena, water temperature, amount of sediment in the stream hydrochemistry of water, changes in river channel, flow velocities, riots and otherphenomena and processes taking place continuously in the life of the river.All of these and other elements of the hydrological regime in aggregate affect the river.
Depending on whether or not there on the river hydraulic structure that can affect the hydrological regime of the river has over-regulated mode or natural (home).Of all the elements of the regime of the river of great practical importance given to runoff.Its value determines the water cut territory, territorial hydropower reserves, the size of waterways in the area.
River regime depends on many factors: climate, terrestrial relief, water supply and others.The main factor - water supply.The river is obtained by precipitation in the water cycle in nature.Water supplying power rivers divide on ice, snow, rain and groundwater.These terms also resorted to identify the types of food rivers.In some cases, it is difficult enough to clearly identify the supremacy of a single power source of the river (the type of food the river) and then apply the term "mixed type of food."
Phase (periods) of the water regime on the characteristic features are divided into high water, low water and floods.A flood occurs annually at a certain season of the year, there is a long level rise with high marks and the largest water content compared to the other phases.Low water is seasonal in nature and is characterized by a low level and the lowest water content;at this time the river is fed primarily by groundwater.Floods are characteristic rapid and transient high levels with large amounts of water;They occur as a result of rain, snowmelt.
features of the Nile: the length of the river with his image, the rivers in the river system Rukakara-Kager Nile is 6852 km - is the second longest river of the Earth.Nile flows from south to north to the Mediterranean Sea.The rapid flow of the river in the upper and middle part of the bottom of the slow-motion;to the mouth of the Nile is divided into numerous branches and near the Mediterranean Sea forms the greatest delta.Neil - the source of life in the Sahara desert.Almost the entire population of Egypt (97%) settled along its coast.Permanent watercourse Nile provide year-round equatorial rains (catchment area of the Blue Nile) and rain in the southern regions (catchment area of the White Nile), and rains on the Abyssinian highlands, wash loose soil.River flow carries the slurry, postponing nutritious silt in the delta, in the fields where the Egyptians harvest remove up to 3 times a year.For flood control, in which the level of the river water near Cairo rose by 8 meters, which threatened disaster to the population, built by the famous Aswan Dam.And now the regime of the Nile River in the lower reaches of the regulated.But while Neil longer Volga 3 times, in line with its volume of water it carries a 2 times smaller.
