DP Geography Questionbank
Hydrographs
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Description
Describe the characteristics of a hydrograph. Examine the reasons for spatial and temporal (short-term and long-term) variations in hydrographs. Examine the role of hydrographs in forecasting the magnitude, spatial extent and timing of floods.Directly related questions
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17M.2.bp.2b:
Explain three factors that may produce a short time lag on a storm hydrograph.
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17N.2.bp.02a.iii:
Outline why the rising limb on this hydrograph is steeper than the falling limb.
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17N.2.bp.02a.i:
State the lag time for the storm event shown on the hydrograph.
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17N.2.bp.02a.ii:
State how many hours the discharge was over 40 cumecs.
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18N.2.bp.1a.ii:
Suggest why a logarithmic graph was used to show these data.
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18N.2.bp.1a.iii:
Estimate the flood recurrence interval for a discharge of 10 000 cumecs.
