Geographical Association

Join the GA

The leading subject association for all teachers of geography

Uckfield Case Study: Catchment Overview

The catchment area is approximately 605 km2 of which 7% is urban and the remainder either farmed or open countryside.

The catchment is dominated by the South Downs chalk block to the south which forms distinctive chalk cliffs at the sea. The scarp face of the South Downs overlooks the Low Weald, a broad, low-lying vale. The upper catchment is characterised by the sandstone ridges and valleys of the High Weald.

The River Ouse rises in the High Weald where river channels are steep and incised. The middle reaches flow through the gently undulating countryside of the Low Weald. The River Uck has a steeper channel slope than the River Ouse at its headwaters. At Lewes the River Ouse flows through a narrow gap in the Chalk and flows down the flat river valley to the sea at Newhaven.

The watercourses in the catchment have been heavily modified by human influence over time. The River Uck and its tributaries upstream of Uckfield have suffered severe bed erosion in the past 50 years. This is likely to have resulted from historic straightening and dredging practices.

As the geology changes in the lower catchment to more permeable Greensands and highly permeable Chalk, the river flow is not so reliant on rainfall as baseflows are increased by water from the chalk aquifer.


Catchment Geology (613k)

note: this file requires Microsoft Word.

Catchment Map (170k)

(image file)

Ouse Hydrographs (99k)

note: this file requires Microsoft Word.

Catchment Topography (101k)

note: this file requires Microsoft Word.

Climate Change (37k)

note: this file requires Microsoft Word.

Comment on this page

Comments made by GA members appear instantly and don't require security words to be entered - make sure you're logged in!   Guest comments will be sent to a moderator for approval.

GA members can add a profile picture and their comments appear instantly

Join the GA

Please complete all fields

Journals - Free Access for GA Members

The Autumn 2014 issue of Primary Geography focuses on geography out of the classroom.

The Autumn 2014 Teaching Geography focuses on teaching about places.

The Autumn 2014 issue of Geography

Online Shop - Up to 30% Discount for all GA Members

KS3 Geography Teachers’ Toolkit. The Role of Stones: How do ..

£18.99 / £13.99 *

Add to basket

Global Energy Security (DVD)

£61.99 / £50.99 *

Add to basket

Debating Energy Futures: Coal, Gas and Nuclear (DVD)

£61.99 / £50.99 *

Add to basket

Collins Junior World Atlas (Third edition)

£9.99 / £8.99 *

Add to basket

KS3 Geography Teachers’ Toolkit. Introducing India: What ar..

£18.99 / £13.99 *

Add to basket
<-- -->

Your shopping basket is empty.

Items in basket 0

Basket Total £0.00

View/Edit Basket

* Applies to Full Personal, Group and
Concessionary members only

Resource Finder

Enter a keyword below or click 'advanced search' for more options

Advanced Search

Resources section
  • Advertisement:
  • Visit the Discover the World website for geography resources
  • Visit the Fourth Global Conference on Economic Geography 2015 homepage
  • Find out more

© Copyright The Geographical Association 2013

Charity No: 1135148 Company No: 07139068

Website design and development by Ledgard Jepson