823700
Beschreibung
Mindmap von strangelyblue, aktualisiert more than 1 year ago
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Erstellt von strangelyblue
vor mehr als 10 Jahre
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Factors affecting the drainage basin and storm hydrographs
- Deforestion
- Less trees means less of the water is intercepted or absorbed by trees for evapotranspiration
- Deforestation can also lead to less rainfall
- Less trees means less of the water is intercepted or absorbed by trees for evapotranspiration
- Agricultural Practises
- Poor practises such as compacted soil from livestock can lead to more/quicker runoff
- Poor practises such as compacted soil from livestock can lead to more/quicker runoff
- Soil depth, type and condition
- Thin impermeable soil means less infiltration. If the soil is already damp from antecedent rainfall there will be even less infiltration
- Thin impermeable soil means less infiltration. If the soil is already damp from antecedent rainfall there will be even less infiltration
- Urbanisation
- More urbanisation means more impermeable surfaces in towns and possibly drains that will move water faster into the river
- More urbanisation means more impermeable surfaces in towns and possibly drains that will move water faster into the river
- Lithology
- Impermeable rocks means there is less percolation
- Impermeable rocks means there is less percolation
- Vegetation type
- Deciduous woodland will suffer more moisture loss than moorland vegetation
- Deciduous woodland will suffer more moisture loss than moorland vegetation
- Season
- In the summer months there is more evapotranspiration, meaning more water will be absorbed by plant life
- In the summer months there is more evapotranspiration, meaning more water will be absorbed by plant life
- Amount/intensity of rainfall
- More rainfall means more water in the drainage basin
- More rainfall means more water in the drainage basin
- Presence of stores (Lakes, swamps)
- Climate
- A damper climate means more rain, it can also allow more evapotranspiration
- A damper climate means more rain, it can also allow more evapotranspiration
- Drainage Basin Density
- The more streams in the drainage basin, the more water that reaches the river
- The more streams in the drainage basin, the more water that reaches the river
- Snow Melt
- Fast snow melt can increase the amount of water reaching the river
- Fast snow melt can increase the amount of water reaching the river
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