5.3. Impact of Resuspension on Water Quality

Try these first

1. 1.

   Define resuspension.

   Hint

   Think about what happens to sediments when water flow increases.

2. 2.

   What does TSS stand for?

   Hint

   It's a measurement related to the particles in the water.

3. 3.

   What is resuspension?

   • A process of sediment settling
   • A process of sediment being stirred back into water
   • A type of water filtration

   Hint

   Consider what happens when water turbulence increases.

4. 4.

   True or False: Resuspended sediments can contain harmful contaminants.

   • True
   • False

   Hint

   Think about the contaminants that could be contained in sediments.

5. 5.

   Given a sediment concentration of 100 mg/g and a TSS of 2000 mg/L, calculate the potential contaminant concentration in the water assuming all suspended solids are evenly distributed.

   Hint

   Think about how the concentration of suspended solids relates to the mass of contaminants.

6. 6.

   Explain the potential ecological ramifications of increased sediment resuspension due to human activities like dredging.

   Hint

   Consider both chemical and biological impacts.