Water Management and Environmental Impact

These flashcards cover key concepts related to water management, river flow patterns, and environmental projects as noted during the lecture.

What is the impact of evapotranspiration during summer months on river flow?

In summer, higher evapotranspiration and increased water uptake by vegetation reduce river flow.

How does impermeable sandstone affect the water budget?

Impermeable sandstone reduces filtration and increases surface runoff, accounting for a high proportion of the water budget.

What role does the Wimbleball Reservoir play in water supply management?

It provides a regulated water supply by storing water during wet periods and releasing it during dry times, balancing supply and demand.

What is one benefit of the Exmoor Mires Project?

It helps restore peatland areas, improving water retention, water quality, and reducing runoff.

How do drainage ditches affect soil water storage?

Drainage ditches reduce soil water storage and increase runoff.

What changes occur in river flow during the winter months according to the hydrograph?

The hydrograph indicates higher river flow during winter months (October to March) compared to summer months (April to September).

What is the effect of blocking drainage ditches in peatlands?

Blocking drainage ditches slows water movement, enhances baseflow during dry periods, and supports biodiversity.

What are the two main components of the Earth's water budget mentioned?

Runoff and filtration contribute significantly to the Earth's water budget.