Factors Affecting the River Regime and Hydrographs

the amount + intensity of rain

too much rain will become overland flow and will reach the river at a fast pace

temperature

   temperature affects the form of precipitation e.g snow, takes longer to reach the river as it has to melt first

land use

 trees and plants will delay the rain reaching the ground soil. Rock, tarmac and concrete will speed up run off.

  steep and flat surfaces

             flat surfaces may cause water to sink in the soil

rock type

              impermeable rocks will speed up run off

              permeable rocks will allow the water to sink into the bedrock

dams and reservoirs

they regulate and even out discharges, so reduces the risk of downstream flooding