With reference to an example you have studied, describe and account for one way in which humans attempt to influence or control natural processes - Leaving Cert Geography - Question 1 - 2008

An example of this is the Hoover Dam on the Colorado River in the United States.

The construction of the Hoover Dam significantly alters the fluvial processes by regulating the flow of the Colorado River, affecting sediment transport and ecosystem dynamics downstream.

The construction of dams has several positive impacts, such as providing water for irrigation and creating reservoirs for recreational activities. However, it also has negative effects, including the disruption of fish migration patterns and changes in sediment deposition, which can lead to habitat loss.

Additionally, the alteration of natural water flow can lead to downstream erosion and affect water quality. The presence of the dam can also lead to the creation of a stagnant water body, resulting in changes to the aquatic ecosystem, including the growth of invasive species.

In conclusion, while the construction of dams represents a significant human effort to control and influence natural fluvial processes, it is essential to weigh these benefits against the environmental consequences.