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Why Are These Pollutants a Problem? <br /> TSS - Carries other pollutants with it. <br /> Blankets channel bottoms hence reducing fish <br /> habitat and channel capacities. <br /> Can cause increases in water temperatures. <br /> Nutrients- Excess nutrients may cause nuisance algal blooms <br /> which depletes oxygen levels. <br /> Nutrients from decaying vegetation also deplete <br /> oxygen levels. <br /> When oxygen levels are low, more metals are <br /> released from sediments. <br /> Metals- Toxic to aquatic life. <br /> Bacteria- Indicates possible presences of human pathogens. <br /> Organics- Toxic and sometimes carcinogenic to aquatic life. <br /> Temperature- High water temperatures reduce oxygen levels by <br /> accelerating biodegradation levels. <br /> High water temperatures also reduce fish habitat <br /> for certain species. <br />