The River Tillingbourne

1st year fieldwork

Where?

We will visit Crossways Farm,

which is about11miles

west of Reigate

Dorking

Reigate

What are our aims?

• To investigate what a river’s channel looks like• To investigate how the channel and the velocity may

change between a straight section and a meander

We will then use our data to create cross sections of the River Tillingbourne…

…and ultimately you will establish how meanders form in a river!

Team X-Section!1) Start on the left hand bank (you will be looking upstream)2) Measure the width of the river with a tape measure3) Split the width into small, equal sections, and measure the depth using a ruler4) Record ALL your data and make any useful observations!

Example:

• Width – 2m• Record depth

every 25cm across

You will take 3 cross sections along a 5m

stretch

Team Velocity!

1) Measure 5m along the river (either in the stream, or along the bank (requires 2 people)

2) Person A drops a dog biscuit into the centre of the channel. Person B times how long it takes to travel 5m. Person C catches it!

• You need to repeat this 3 times so that you can work out an average velocity (m/s)

• If you started on a straight section, your teacher will send you over to a meander (and vice-versa)

• You will then swap teams and roles!

What personal equipment do I need on the day?

• Wellies or shoes you can get wet• Spare change of clothes (in case!)• Pens/clipboard/camera/brain• Some snacks• Water• Suncream• Hand Sanitizer

AM groups, report to teacher at 8:45, outside PMH:

SMH – go to Mr ClineLHS – go to Mrs DexterJMA – got to Mr Hadley

PM groups, report to teacher at 12:50, outside PMH:

CLN – go to Mr CollinsBHE – go to Mr KleinNJF – got to Miss Arthur/Ellen

REMEMBER – by FIRDAY….

No consent form = NO excuse = NO TRIP

What do we do in the following lessons?

• You will be making 2 cross sections – for a straight and meandering section of the river.– You will take the average of your data for the meander/straight

section

• You will plot the average velocity and discharge of the stream on your cross sections

• Also add in any good observations and photos to your graphs

We will then look for any differences between a meander and straight section, and your teacher will help YOU to uncover any

mysteries that crop up!