River tees - rivers

• Upper course

  Waterfall is high force

  Hard rock = whinestone

  Soft rock = sandstone

  Height = 20m
• Middle course

  Meanders and oxbow lakes

  Barnyard and yarm
• Lower course

  Levees and estuary

  North sea
• Reasons:

  High run off at the upper course due to V shaped valley

  23,500 people at risk of flooding around the Tees area

  Lower course at risk from tidal flooding
• Management:

  Flood warning - early flood warnings are given to residents using the net office, police and other emergency services

  Flood gates - if there's a flood warning, the gates will be lowered to create a barrier

  Tees barrage - kept at a high level to reduce risk of flooding at high tide

  Cow green reservoir - holds 40 000 million litres of rainfall so in times of heavy rainfall, it can store it
• Issues:

  Flood warning -

  (Social) residents have the opportunity to evacuate and move valuables

  (Economic) Cheap

  (Environmental) Flooding still occurs

  Flood gates-

  (Social) Can be used as fishing platforms for locals

  (Economic) Costed £2.1 million

  (Environmental) Visual pollution

  Tees barrage -

  (Social) Recreation e.g white water rafting/ canoeing

  (Economic) Costed £54 million

  (Environmental) Visual pollution

  Cow green reservoir -

  (Social) Walks around it

  (Economic) Provides water for the local industry

  (Environmental) 30 hectare of natural habitat flooded