A eutrophic body of water, commonly a lake or pond has high primary productivity due to excessive nutrients and is subject to algal blooms resulting in poor water quality. The bottom waters of such bodies are commonly deficient in oxygen, ranging from hypoxic to anoxic. Eutrophic waters commonly lack fish species like trout which require cold, well-oxygenated waters. This oxygen deficiency is most apparent in shallow lakes, owing to the smaller hypolimnetic volume. The process of eutrophication… (More on Eutrophic)