On 05/08/2019 10:18, NY wrote:
"nightjar" wrote in message
...
On 04/08/2019 21:13, Brian Gaff wrote:
Yes but its really low pressure and if you want to move a lot at a time
there is no benefit to using a siphon. Incidentally, where ARE they
putting
all that water?
Â* Brian


You can see some of the outlet pipes emptying onto the concrete
spillway, on the opposite side from the failure. Other pictures seem
to show more outlets running straight into a waterway.

I may have missed something in the earlier new reports, but why are they
having to *pump* water out of the reservoir? Is there a problem with
taking water out in the normal way?

It can't take the water away fast enough. The rivers below the dam are
already near capacity.

I think it's a canal feeder
reservoir. Can the canals not cope with a greater flow of water into
them than was originally intended? Are the water courses that the pumps
drain into separate from the canal network - is the canal not also fed
from them and the spillway?

I don't understand about blocking the streams that feed into the
reservoir? Won't water just build up behind the temporary "dams" that
the Chinooks are making, causing them to burst catastrophically at some
stage in the future?

By building dams in the feeder steams, the water can be pumped away
before it reaches the reservoir.



--
Colin Bignell