The Culm Catchment Flashcards
(22 cards)
What is the largest tributary of the River Exe?
The largest tributary of the River Exe is the River Culm.
What percentage of the drainage basin is used for agriculture?
40% of the drainage basin is used for agriculture.
What is the primary impact of precipitation on drainage basin stores?
The impact of precipitation upon drainage basin stores includes changes in water levels and availability.
What is the height of the highest point in the drainage basin?
The highest point in the drainage basin is 300m high.
Fill in the blank: The drainage basin of the River Exe is located in _______.
South-East Devon
What is the main land use in the River Exe drainage basin?
55% is used for improved grassland (mainly for grazing animals).
During which months is the most frequent discharge observed?
June to September is when the most frequent discharge occurs.
What type of soil is found in the upper course of the River Exe?
The upper course has overland flow and impermeable soil.
What type of soil is found in the lower course of the River Exe?
The lower course has sandy, clay, and mudstone soils.
What geological feature is located to the east of the River Exe?
Limestone is located to the east.
What are the aims of tree planting schemes in the River Exe drainage basin?
The aims include improving water quality and increasing biodiversity.
True or False: The River Exe drainage basin has a significant amount of impermeable surfaces.
True
What organization is involved in the Connecting the Culm project?
The National Trust is involved in the Connecting the Culm project.
Fill in the blank: Tree planting schemes are intended to _______ water quality.
improve
What is a consequence of agricultural practices in the River Exe drainage basin?
Consequences include potential nutrient runoff and impacts on water quality.
What is the impact of climate change on precipitation?
Climate change leads to a 35% increase in precipitation.
What is the impact of climate change on summer?
Climate change results in a 35% increase in temp.
What human factors contribute to climate change?
Urbanization and agriculture create impermeable surfaces.
What is the effect of agriculture on soil?
Agriculture degrades soil quality.
What is the consequence of low tree cover?
Low tree cover leads to low infiltration rates.
What is the reason of quick surface run off?
Quick surface runoff due to
shallow soil.
What happens during short lag times in agriculture?
Short lag times can cause crop failure.
