Gce Model Questions Vol1 2017 Geography Question 8

Practice essay / theory question 8 from the 2017 Gce Model Questions Vol1 Geography examination. This question covers Drainage .

Gce Model Questions Vol1 2017 Geography Essay / Theory

Topic: Drainage

Question 8 GCE_MODEL_QUESTIONS_VOL1 • 2017 • GEOGRAPHY • essay

River Y drains a mixed‑lithology catchment of 12 000 km². The river is 180 km long, has a mean annual discharge of 45 m³ s⁻¹ and a gradient that changes from 0.02 in the upper course (60 km) to 0.001 in the lower course (120 km). The catchment consists of 60 % resistant igneous rocks and 40 % easily erodible sedimentary rocks.

Question Parts

( a )

Calculate the average gradient of the river over its entire length and discuss how the variation in gradient influences the river’s energy and sediment‑transport capacity.

( b )

Using the concept of river regime, classify the likely regime of River Y and justify your classification with reference to the data provided.

( c )

The region is considering constructing a dam in the middle course. Evaluate three potential positive and three potential negative impacts of the dam on the river’s hydrology, sediment load and downstream ecosystems.

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About This Question

This is Gce Model Questions Vol1 2017 Geography Question 8. It is one of the essay questions from the 2017 Gce Model Questions Vol1 Geography examination.

The question covers Drainage .

View More Gce Model Questions Vol1 2017 Geography Questions More Gce Model Questions Vol1 Practice Questions Back to Questions

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