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Section C — River LandscapesUK riverPaper 1

River Tees

85 miles from Pennines to North Sea · High Force waterfall · meanders at Darlington · estuary at Teesside.

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85 miles
Length
20m
High Force drop
1,500mm
Annual Pennine rainfall
Key facts — from Seaford 2025–27 case study notes

Upper course — High Force & the Pennines

  • Source at Cross Fell in the Pennines
  • Pennines act as a "giant sponge" absorbing over 1,500mm of rainfall per year
  • Steep-sided valleys, interlocking spurs, small waterfalls in upper course
  • High Force waterfall: One of the UK's most impressive waterfalls · 20m drop · located near Forest-in-Teesdale
  • Whin Sill (hard rock) overlies softer sandstone and shale — differential erosion creates the waterfall
  • Vertical erosion dominant — forms V-shaped valleys and gorge below High Force

Middle course — meanders at Darlington

  • Darlington is halfway along the River Tees
  • Low gradient → lateral erosion overtakes vertical erosion
  • Large meanders — winding bends formed by lateral erosion
  • Oxbow lakes formed in some areas where meanders are cut off
  • Evidence of past flooding in naturally formed levees
  • Floodplain develops — flat fertile land either side of river

Lower course — Teesside estuary

Exam questions — 2 questions · 10 marks
Geography exam tip: Always use named examples with specific data. "An earthquake in Nepal" scores fewer marks than "The 2015 Nepal earthquake (magnitude 7.9, 9,000 deaths)." Learn the statistics on this page.
1 markHigh Force formation

Why does High Force waterfall exist at this point on the River Tees?

A The river drops off the edge of a fault caused by tectonic activity
B Hard Whin Sill rock overlies softer sandstone and shale — differential erosion creates the step
C A dam was built here in the 19th century to create a reservoir
D The river is dammed by a natural barrier of deposited sediment
6 marksUpper to lower course changes

Describe how the River Tees changes from its upper course to its lower course. Refer to specific landforms at each stage. (6 marks)

Hint: Work through upper, middle and lower course in order. Name specific landforms (High Force, meanders, oxbow lakes, levees, estuary, mudflats) and explain the processes that formed them.
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