File Details
- Depositor
- Karen Dykes
- Date Uploaded
- 2021-12-08
- Date Modified
- 2021-12-08
- Fixity Check
- passed on August 08, 2024 at 14:06
- Characterization
-
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File Format: tiff (Tagged Image File Format)
File Size: 1165474
Filename: pp_024.tiff
Last Modified: 2024-08-09T03:58:25.887Z
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| Transcript |
- The 2nd [second] year students spend about 10 days of
work here.
May 8, 1953. Left Edinburgh at 9:10 + drove to Pitlochry
via Queensferry. Then met a warm welcome from
George Blackwood. Had an excellent lunch with him
in the very modern Fischer Hotel then went over
the Pitlochry Dam. A very pleasing structure. Fish
ways look good, rise about 70' I would say.
About 6000 fish a year come up. About 10% kelts
return. Later JA Stuart of the Brown trout research lab
told me this was an exaggeration. Returning kelts in
their second run number 2-5% in the catch.
This is the first cycle year so it will be
watched carefully for indications of the influence
of the dam.
Big problem is getting the smolts down.
Apparently about 25% are lost in passage. Kelts
tend to hang up in the reservoirs + begin feeding
while slowly starving to death. No big freshets
any more to wash the kelts out to sea, 2nd [second] run
fish about 1/2 formerly.
Stuart showed me his experimental tanks for
studying spawning beds of trout + showed excellent
diagrams of the perpendicular flow of current into the
egg beds + through them thus keeping them silt-clean.
His papers on egg beds + siltation should be good.
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