✅C&W Case Study - River Tweed Flashcards

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1
Q

Where

A

Starts in Scotland, flows mostly in NE England. Flows East

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2
Q

River Tweed length

A

156km, 2nd largest Scottish river basin

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3
Q

Ecosystem

A

abundance of salmon, diverse array of other fish, so people often fish there

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4
Q

Catchment area

A

5000km^2

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5
Q

River basin shape and geology

A

The catchment of the river Tweed consists of a horse-shoe shaped rim (circular, flashier rising limb on hydrograph) of hills composed of older, harder rocks which surround a relatively flat basin of younger rocks covered with a thick layer of glacial boulder clay (impermeable, water can runoff).

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6
Q

Land use: fishing

A

Major fishing along the whole river sometimes causes dangerous decreases in fish, requiring fishing limits from Feb to June.

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6
Q

Land use: urbanisation

A

Various urban areas along the way, such as Berwick on Tweed, Peebles. Impermeable surface means more runoff, so more discharge

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7
Q

Impact of heavy rainfall

A

High level of precipitation 1 week in 1948, causing the most significant flood event. Disruption to transport services by collapsing a local railway bridge. About 180 people evacuated.

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