Surface water erosion

In order to stop surface water erosion it is necessary to reduce water speed. At this regard and in order to protect a riverbed, men build river bridles, i.e. a series of steps along the river flow. In order to prevent floods, instead, artificial banks are built. When building them, it is important to calculate the natural space the river needs in order to let floodwater drain off.  In order to reduce the quantity of water of a riverbed during a flood, water tanks (that can provisionally transmit a certain quantity of water) and drainage channels (that divert the river flow) are designed.

Special reports

  • 10 January 2007

    Man and the mountain

    The antique populations that used to live at the bottom of the mountains...

    7 January 2010

    Alps and Appennines

    The term orogeny was born from the Greek words...

    13 May 2013

    Small steps, great footprints

    Have you ever wondered how much space is taken up by an apple or a steak?...

  • 5 September 2007

    The Mediterranean sea

    The warm blue waters of the Mediterranean Sea...

    3 December 2006

    Sustainable agriculture

    Agriculture is man’s main activity, it enables the production of food...

    15 March 2008

    Biodiversity

    Defining biodiversity Much is said about biodiversity and of the need to protect it. But what is biodiversity? And why…

  • 10 November 2011

    Landslides

    When studying landslide phenomena, it is opportune to distinguish...

    2 October 2011

    The hydrogeological risk

    On the sides of watercourses are plains...

    5 January 2005

    Tsunami in the Maldives

    On the 26th December 2004, an earthquake that took place 300 km west of the Island of Sumatra...

  • 10 January 2007

    Man and the mountain

    The antique populations that used to live at the bottom of the mountains...

    7 January 2010

    Alps and Appennines

    The term orogeny was born from the Greek words...

  • 13 May 2013

    Small steps, great footprints

    Have you ever wondered how much space is taken up by an apple or a steak?...

    5 September 2007

    The Mediterranean sea

    The warm blue waters of the Mediterranean Sea...

  • 3 December 2006

    Sustainable agriculture

    Agriculture is man’s main activity, it enables the production of food...

    15 March 2008

    Biodiversity

    Defining biodiversity Much is said about biodiversity and of the need to protect it. But what is biodiversity? And why…

From the Multimedia section

Facts

  • Mountains on the Earth

    The different landscapes that we analysed in the previous section are distributed...

  • Different plains

    In South America plains are different from North to South...

  • 16 May 2011

    Rock glaciers

    In the mountains, also in our Alps, in detrital screes...