Hey Boi

Reflection (the last of the 6Rs)

Rivers, floods and management

1. The drainage basin hydrological cycle: the water

balance.

A) Partial

B) Cycle in which the water travel in and out of the open drainage basin.

2. Factors affecting river discharge: the storm

hydrograph.

A) Full

B) Snow melting, Intensity of the storm over the duration of the storm.

3. The long profile – changing processes: types of

erosion, transportation and deposition, types of load;

the Hjulstrom curve.

A) Partial

B) Four types of erosion are Attrition,abrasion,traction,soloution, the curve shows how quickly the water has to move to deposit different size particles.

4. Valley profiles – long profile and changing cross profile

downstream, graded profile, potential and kinetic

energy.

A) Partial

B) Hydraulic radius = cross sectional area divided by the wetted perimeter

5. Changing channel characteristics – cross profile,

wetted perimeter, hydraulic radius, roughness,

efficiency, and links to velocity and discharge.

A) None

B)

6. Landforms of fluvial erosion and deposition –

potholes, rapids, waterfalls, gorges, meanders,

braiding, levees, flood plains and deltas.

Process and impact of rejuvenation – knick points,

waterfalls, river terraces and incised meanders.

A) Partial

B)

7. Magnitude-frequency analysis of flood risk.

A) Partial

B)

8. Physical and human causes of flooding – two

case studies of recent flooding events should be

undertaken from contrasting areas of the world.

A) Full

B)

9. Impact of flooding – two case studies of recent

flooding events should be undertaken from

contrasting areas of the world.

A) Full

B) Bangladesh and boscastle.

10. Flood management strategies – to include hard

engineering – dams, straightening, building up of

levees, diversion spillways, and soft engineering –

forecasts and warnings, land use management on

floodplain, wetland and river bank...