Nothing But Bows

[Mildog]

We gave Jordanelle a try yesterday, 7 hours without a bite.  Fished the main lake, west side all the way up to the level of the marina, up the Rock Creek arm, depths from 5' to 50'.  Per mildogs post I started at 10' for an hour.  The Rock Creek arm thermocline seemed about 5' higher.  Surface temps began about 60.5F, rising to about 64F by the time we left at 3:00.  In the main lake body the temps were as folows:
               

****Paddler, All, here is temp info from Jordanelle FYI caught 6 kokes 2 rainbows that morning at YES *10 feet or less Interesting how little change in first 25 feet of depth 
                       August 5 2020 ** next to your info

Surface- 61.9F.           71.5 **
5'-         61.5.             71.5
10'-        61.1.             71.2
15'-        60.9.             71.0
20-         60.8.             69.9
25'-        60.4.              69.9
30'-        58.3.              65.5
35'-        57.2.              62.3
40'-        56.1.               60.0
45'-        54.3.               58.3
50'-        52.5.                55.9
                          55’.      53.6
                          60’.       50.9
So it seems that about 47' would be prime, but it wasn't.  I marked a couple of fish I'm pretty sure were kokes at 28'.

The water was very stained, which would limit light penetration, which would logically cause plankton growth to be higher in the water column, which would mean to kokanee would need to come up to feed for short periods of time before returning deeper to their comfort zone, but who knows where the feeding zone was?  For those who poo-poo temperature sensitivity, we know that kokanee go down to 200' during the summer months in Lake Berryessa in California, guys over there often fish down at 70' or deeper. 

We came upon a kayak fisherman who was in the process of doubling by longlining his gear on the surface.  Rainbows, of course, he never touched a kokanee.  I have a buddy who was also up there fishing in his yak, he fished up and down also, with only a single 13' rainbow to show for it.  There were some guys in a Lund doing circles out in the main lake, I saw them later at the cleaning station with rainbows.  We stopped to talk to some folks in a pontoon who were netting something, they were gathering small chunks of driftwood.

Take aways-  There were no biting kokanee in Jordanelle despite the DWR planting about 130,000/year.  Maybe due to the runoff stained water, maybe because the place is pretty much full pool, or something else, like planting other predator species, or maybe it's too early, etc, etc.  But whatever the reason, I won't be returning soon.

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I do love your temp report. What type of device are you using. I need one

https://fishhawkelectronics.com/fish-haw...h-hawk-td/

Paddler posted some temp info above next to yours from 2020. I have a fish hawk also. Neat unit very accurate. Honestly I don’t use it much now. Just every once in a while for curiosity.
I don’t look for temps when fishing for kokes. I fish where I find them and catch them, irregardless of the water temp. I always try shallow until I find them elsewhere. Now I have livescope I can see kokes shallow that I wouldn’t on standard down looking sonar.
I can look back and see all 4 dodgers and squids and watch fish react or NOT very frustrating. Surprised how often they follow and don’t hit even with changing speeds, turning raising or lowering . Other times watch them coming and call the hit? Can drive you crazy !