Why is the water in a "young" (oligotrophic) lake usually clear?These lakes have low levels of nutrients, which keep phytoplankton populations low, so the water is clear.Water flows into these lakes much more slowly than usual, so sediment is not stirred up.These lakes tend to be shallower, so photosynthesis is more rapid.Erosion is much lower in these areas, so less sediment washes into the lake.This is not correct—young lakes tend to be muddier than older, more established lakes.

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