Dystrophic Lakes:A dystrophic lake is a water body that has been significantly impacted by human activity. The most common cause of dystrophy is eutrophication, which occurs when a water body becomes overloaded with nutrients. This can lead to the growth of excessive amounts of algae and aquatic plants, which can then die and decompose, leading to the depletion of oxygen in the water. This can create a serious problem for the fish and other aquatic creatures that live in the lake, as they may suffocate and die.