Hydrograph keywords 5.0 / 5 based on 2 ratings ? GeographyHydrographsA2/A-levelAQA Created by: Leah HolmesCreated on: 14-11-18 09:54 Hydrograph A hydrograph is a graph showing the rate of flow versus time past a specific point in a river, channel, or conduit carrying flow. 1 of 9 Discharge Rate of flow 2 of 9 Peak Discharge Time where a river reaches its highest flow 3 of 9 Peak Rainfall The time where rainfall is at its highest. 4 of 9 Lag time The difference in the time between the peak rainfall and peak discharge. 5 of 9 Rising Limb Represents the increase in rainfall and peak discharge 6 of 9 Falling Limb When the amount og discahrge decreases and therefore the river levels fall. 7 of 9 Flashy Hydrograph A 'flashy' hydrograph has a short lag time, high peak discharge and steep rising and falling limbs. 8 of 9 Subdued Hydrograph A 'subdued' hydrograph has a long lag time, low peak discharge and low rising and falling limbs 9 of 9
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