31 May 2010
The discharge across the spillway at Attabad is still increasing. Whilst some reports suggest that it is higher, the Pamir Timeshttp://pamirtimes.net/ suggests that the flow at 2 pm local time was 250 cubic feet per second (7.08 cubic metres per second). If this is correct, the discharge time graph looks like this:
However, the situation is now somewhat confused as the NDMA report from 6 pm on 30th May (i.e. yesterday) was that total outflow was 900 cusecs (25 cubic metres per second). Assuming that 250 cusecs is seepage, this would give a spillway flow of 650 cusecs (18.4 cubic metres per second). This seems to be surprisingly high. Maybe the NDMA information has the wrong time stamp?
Therefore, at the moment I am a little confused as to what is happening. I will try to clarify this in the next few hours.