Causes of River Floods

Descripción

Rivers, Floods and Management- Causes of River Floods
littlestephie
Mapa Mental por littlestephie, actualizado hace más de 1 año
littlestephie
Creado por littlestephie hace alrededor de 9 años
95
0

Resumen del Recurso

Causes of River Floods
  1. Physical Factors
    1. Rock Type
      1. Impermeable rock encourages rapid overland flow
      2. Steep Slopes
        1. Mountain Environments encourage rapid transfer of water
        2. Long Profile
          1. Steep upper course and flat lower course means a build up of water in lowland areas
          2. Drainage Density
            1. High drainage density means water reaches the river quickly
            2. Snowmelt
              1. When snow/ice melts it means lots of water running over ice
              2. Intense and Prolonged Rainfall
                1. Summer/tropical storms and monsoons means flooding
              3. Human Factors
                1. Building Construction
                  1. Building on floodplains creates impermeable surfaces and drains filling river channel rapidly
                  2. Deforestation
                    1. Little evapotranspiration happening
                    2. Agriculture
                      1. Arable farming means soil is left bare to the weather, so ploughing creates grooves meaning flooding
                      2. Ineffective Flood Management and Warning Systems
                        1. Lack of flood defence/badly maintained culverts/bridges means flooding
                      Mostrar resumen completo Ocultar resumen completo

                      Similar

                      River Processes and Landforms
                      1jdjdjd1
                      GCSE Geography - Causes of Climate Change
                      Beth Coiley
                      Geography Quiz
                      PatrickNoonan
                      Geography Coastal Zones Flashcards
                      Zakiya Tabassum
                      Using GoConqr to study geography
                      Sarah Egan
                      All the Countries of the World and their Capital Cities
                      PatrickNoonan
                      Tectonic Hazards flashcards
                      katiehumphrey
                      Volcanoes
                      1jdjdjd1
                      The Rock Cycle
                      eimearkelly3
                      Plate Tectonics
                      eimearkelly3
                      Characteristics and Climate of a hot desert
                      Adam Collinge