Hydrographs 0.0 / 5 ? GeographyRivers and fluvial processesASAQA Created by: That50sTeen99Created on: 27-04-16 12:56 What do hydrographs do? They record how much water passes through a river at a particular point in its course (discharge). 1 of 10 What do storm hydrographs do? They show the change in discharge caused by a period of rainfall. 2 of 10 How is rainfall shown on a hydrograph? It is shown as a bar graph (in mm). 3 of 10 How is discharge shown on a hydrograph? It is shown as a line graph (in mm cubed per second). 4 of 10 What is the rising limb? The rising flood water in the river (on line graph). 5 of 10 What is the peak flow? The maximum discharge in the river (peak of the line graph). 6 of 10 What is the recession limb? The falling flood water in the river (on line graph). 7 of 10 What is the basin lag time? The time difference between the peak of the rain storm and the peak flow of the river (time between highest bar and peak flow). 8 of 10 What is base flow? The normal discharge of the river. 9 of 10 What do you get if you combine the overland flow and through flow? The storm flow. 10 of 10
Comments
No comments have yet been made