Examine how human processes can have an impact on the operation of one of the following natural processes: - Mass movement processes - River processes - Leaving Cert Geography - Question Question 1 - 2006

1. Dam Construction: Dams alter the natural flow of rivers. This can lead to sediment trapping, preventing the natural replenishment of downstream ecosystems. Additionally, this can affect fish migration patterns and aquatic biodiversity.

2. Urban Development: Increased urbanization near riverbanks often leads to increased runoff. Impermeable surfaces like roads and buildings prevent water absorption into the soil, resulting in higher flood risks and altered river flow patterns.

3. Pollution: Human activity introduces pollutants into rivers, deteriorating water quality. This can harm aquatic life and disrupt the food chain.

4. Riverbank Modification: Structures such as levees and retaining walls can stabilize banks but may also lead to increased erosion elsewhere, changing natural river dynamics.

5. Resource Extraction: Activities like mining near rivers can lead to increased sedimentation and habitat destruction, negatively impacting river ecosystems.

6. Agricultural Practices: The use of fertilizers and pesticides in agriculture can run off into rivers, leading to nutrient pollution and algal blooms that disrupt aquatic ecosystems.

7. Water Diversion: Diverting water for irrigation or drinking can reduce river flow, affecting habitats and species dependent on consistent water levels.

These examples illustrate the many ways human processes disrupt the natural operation of river systems.

In conclusion, human activities overwhelmingly alter river processes, leading to ecological imbalance and increasing the vulnerability of the environment. Mitigating these impacts through sustainable practices is essential to preserve the integrity of river systems.