River Discharge, Storm Hydrograph
- Created by: Sharon
- Created on: 08-04-15 13:48
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- Factors affecting River Discharge: storm hydrograph
- Human
- LAND USE
- Impermeable services = less lag time, increased peak discharge
- URBANISATON - compaction of ground, building roads, drainage, river straightening.
- Reduce lag time, Increase peak discharge
- LAND USE
- Physical
- Vegetation
- Summer = more leaves = more interception = lower discharge
- Temperature
- Increased evaporation reduced discharge. Cold = frozen ground increasing discharge
- Slope Angle
- Bigger slope = less lag time and steeper rising limb.
- Shape of Basin
- Rainfall reaches river quicker in round rather than elongated.
- Size of Basin
- Small basin = shorter lag time.
- Impermeable Rock
- Increase in discharge
- Snow
- Once landed, heated and increases discharge.
- Intensity
- If high, high rising limb.
- Antecedent Rainfall
- Henry rainfall on saturated soil = steep rising limb
- Vegetation
- Human
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