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Imperceptible as they may seem, definite currents are set up in every lake which has intakes, whether these be bottom-fed springs or incoming brooks, because of the differences in densities and temperatures and the flow of water from intake to outlet. Around these currents, fish set up their day-to-day cycles, which remain pretty constant within a seasonal cycle. About those willows we saw, they must be near an inlet of cold water. As for the outlet, you could bet on those sunken logs being there because the freshets and the lake's current would have carried them there where they eventually got waterlogged and sank. Remember that maidenhair fern on the cliff? That means there's water dripping and a cold spring underneath. Quite a bit of water, too, or we wouldn't have heard that ouzel's song. Expect a cool spring below, where fish will congregate hot afternoons, particularly in mid-July, because there is plenty of shade there too. The cliff is on the lake's south side, as though the maidenhair didn't tell us that already. Makes it a good place to fish in summer but usually a poor place in spring, when the bottom life is slow and retarded in this cooler area.
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