Zusammenfassung der Ressource
The nature of the
2008 flood
- Intense frontal rainfall
- Frontal rain occur when: 2 air
masses reach. lighter, less dense,
warm air forced to rise over denser,
cold air. causes the warm air to cool
and condenses. As the warm air is
forced to rise further condensation
occurs and rain is formed.
- Stationary front
over
Northumberland
- 80mm of rain fell
in 24
hours
- Nature of surface
water & lateral flooding
- Mitford Road
- Inadequate draining
- Road
surface
floods
- Houses
flooded from
water from
street
- Houses away
from river -
deeper flood
- water
blocked by
houses -
Backing up
- Central Morpeth
- Oldgate bridge - Telford bridge
- Flooding on
south side
confined to river
- steep ground
- Streets flooded from
surface water -
blocked drains
- Defensive walls
overtopped
- High Stanners
- Upper part of town
- Abbey terrace flooded
- Due to low level of road
& inadequate drainage
- Reported flooding
from below floor
boards
- Wansbeck and
Font showed that
56% of rain fall is
converted into
surface runoff
- Hydrograph
- Very intense
rainfall
- Short period of time
- decreased infiltration -
increased lag time -
increased peak
discharge
- Inadequate drainage
- Saturated soil
- urbanisation
- Clay soil
- Flashy response
from river
- Several peaks