Pakistan Floods
IB Freshwater Tasks - Hydrographs
http://daveslandslideblog.blogspot.com/2010/08/pakistanfloods-progression-of-flood.html
http://daveslandslideblog.blogspot.com/2010/08/updatesfor-pakistan-china-and-india.html
Copy the Google earth topographic map into a word
document or cut and paste onto a piece of A4 paper.
Place each of the recorded hydrographs into order along
the River Indus.
When you have all the graphs visible, write an account of
the waters progress down the river including details of
peak discharge rates, the length of the peaks and work out
the total lag time between the peak discharge at the first
location with that of the last location.
Make sure you use dates and height of the flood water in
your description. What could have caused the spatial (long
term) and temporal (long term) variations in the
hydrographs? Think back to the key controls. Page 62-63
of Integrated Approach could help. Don’t forget to apply
the factors to Pakistan.
Examine the role of hydrographs in forecasting the
magnitude (define), spatial extent and timing of floods.
Homework – GATW sheet.