Flow Rates

[jeremyr]

Below is a summary of the flow rate data at Goose Bay Canyon. Does anyone know if the flow rate increases would have been enough to flush the rock snot?

2008-10-20 09:48 0.743 41.217
2008-10-20 10:00 0.753 42.848
2008-10-20 10:12 0.759 43.846
2008-10-20 10:24 0.762 44.351
2008-10-20 10:35 0.762 44.351
2008-10-20 10:48 0.765 44.860
2008-10-20 11:00 0.768 45.372
2008-10-20 11:12 0.768 45.372
2008-10-20 11:24 0.768 45.372
2008-10-20 11:36 0.768 45.372
2008-10-20 11:48 0.768 45.372
2008-10-20 12:00 0.765 44.860
2008-10-20 12:12 0.768 45.372
2008-10-20 12:24 0.768 45.372
2008-10-20 12:36 0.768 45.372
2008-10-20 12:48 0.765 44.860
2008-10-20 13:00 0.768 45.372
2008-10-20 13:12 0.737 40.259
2008-10-20 13:24 0.710 36.127
2008-10-20 13:36 0.679 31.739
2008-10-20 13:48 0.658 28.975
2008-10-20 14:00 0.637 26.374
2008-10-20 14:12 0.618 24.158
2008-10-20 14:24 0.603 22.497
2008-10-20 14:36 0.591 21.224
2008-10-20 14:48 0.582 20.301
2008-10-20 15:00 0.572 19.307
2008-10-20 15:12 0.563 18.440
2008-10-20 15:24 0.557 17.877

[Scythe]

You would need to refer to data for the previous days.

40 cubes for a day is not enough to make a major difference in the amount of rock snot.

Ideally right now one would want 80 cubes or more for a couple of days.

[poppernel]

A good ''anema'' (flood) is the ask, from all the yellow fundi's.

[Herman Jooste]

A good ''anema'' (flood) is the ask, from all the yellow fundi's.

40 cubes is around normal for Jan. We need 80+ over 2 days ( happening 8/9 Nov with the Vaal Canoe Marathon ).
Us f/f need to get the contacts at the Barrage that the canoeists have
WE could then have washed the snot away a month ago.

[jock0]

Originally I hated the stuff but it really is a blessing in disguise - food, shelter, water clarity, oxygenation. Biggest pro is it discourages anglers from fishing the shallows at this stage of the year.

DWAF co-operates with the canoeist's by letting out water due to the high profile of their event. Some fly fishing events get better treatment from DWAF with far fewer participants and a far smaller marketing footprint, so I hardly think we can complain. Take the Bells Christiana event for example where DWAF really came to the party.

[redhumpy]

Here is a quick rocksnot tip for all. When you find a likely spot at the bottom or top of a rapid etc. where you will normally fish but can't because of rocksnot, do the following. Just pull the bloody stuff of the rocks in the water and clear an area big enough to fish in. The rocksnot will wash away down the river. You will find that rocksnot doesn't realy travel through water but stay stationary on a rock. So clear a nice area of rocksnot - go have a beer and a cigarette and come back to the spot after an hour or so. Be carefull however in that sometimes the yellows would use the channels between rocksnot to spawn in. When you clear an area make absolutely sure that it is not a likely spawning area as the rocksnot and spawning fish occur at about the same time during the year.

[redhumpy]

Sorry, just to add to that. I have seen guys fishing a small area and get stuck on exactly the same piece of rocksnot over and over - just remove it!

[Stephan]

Good day all.
Where would one find these flow rates and what will be an appropriate station to use if one will be fishing a venue like ben joh?

[redhumpy]

Go to:
http://www.dwaf.gov.za/
click on Dams, Flows and Floods in the left hand side navigation bar.
Click on Real time
Click on Vaal at Goose Bay Canyon
Click on data

That should be OK for Ben Joh

[Yellowfever]

Hi
Just make this your favourite:
http://www.dwaf.gov.za/Hydrology/rtmain.aspx
Works well to cross reference between Vaaldam outflow, Goose Bay & Schoemans. Then just to make sure go to http://www.reservoir.co.za/flow.htm and check the Barrage data for that week.