Comparing Hereford and Boscastle flood hydrographVersión en línea

A quiz to help you work out what mark you would get for your description of the Boscastle flood hydrograph

por Raphael Heath
1

Did you include data on the rainfall amounts in mm e.g. total of about 70mm or max of 15mm in half an hour?

2

Did you include data on the river flow in cumecs, incluidng the peak flow of 100 cumecs?

3

Did you refer to timings / periods of time about the data? (e.g. rainfall lasted 4.hours, storm flow for around 7.5 hours)

4

Did you refer to the lag time and comment on how long it was (about 3 hours)?

5

Did you refer to the baseflow and stormflow or similar concepts

6

Did you refer to when bankfull discharge was reached/ length of flood flow being 4.5 hours?

7

Did you compare the rising and falling limb of the hydrograph (similar but rising took a bit longer)?

8

Did you compare the peak flow, lag time and flood time with Hereford 2007?

Explanation

Remember with a describe question you dont want to stray into trying to explain the data!