Controlled assessment



Rivers Controlled assessment - 2015
Your controlled assessment is worth 25% of your final grade. This year's topic is on: Investigate erosion and/or deposition in a river channel Content 2000 Words maximum Introduction and methods – 800 words – in CLASSROOM CONTROLLED CONDITIONS Data presentation (tables graphs etc) – in CLASSROOM CONTROLLED CONDITIONS Analysis, conclusions and evaluation – 1200 words – in EXAM STYLE CONTROLLED CONDITIONS QUICK LINKS ON THIS PAGE;
Research and theory	Useful documents	Methodology	Location	Presentation of results	Analysis
Research & Theory River channels effectively flow in drainage basins, and your task is to investigate the EROSION and DEPOSITION processes and evidence for these within those river channels. You could measure characteristics shown on the diagrams below. The Bradshaw model characteristics should be affected by erosion and deposition and erosion/deposition will be affected by some of those characteristics. Long and cross profiles will also indicate which erosion and deposition processes are opccurring along the River Breamish in Northumberland National Park
Click on the image for a larger clearer version of the Long Profile diagram above
I have tried to collate all of the relevant theory pages here. You can investigate more on Drainage Basins, Long and cross profiles here. For the erosion and deposition processes, you should explore the resources on this page. Useful documents The MARK SCHEME - How we will mark your work STUDENT version of mark scheme Evaluating the LOW CONTROL sections - self evaluation Location Get a map of the River Breamish from Ordnance Survey Links to a range of mapping resources A map of the River Breamish - add our data collection sites to it Watch a video - turn the sound right up OR use headphones Click on the map to get a larger version Method The data collection sheet Bedload shapes image - Power's scale used to show roundness of stones Wikipedia article on sampling

			Click on the image for a bigger clearer version
Resources for graphing Blank spreadsheet to add your results to in data collation in class - 2013 version, I'll add the 2014 version AFTER your June fieldtrip - Right click and SAVE AS Long Profile Excel file to use with Ordnance Survey map Analysis An example of analysis on another topic - SAND DUNES - Watch a video of this - USE HEADPHONES to listen to the commentary
2013 data collection sites View River Breamish study map in a larger map

Photographs from the area, click on the photo to get a bigger, more refined image.

Site 1 on Het Burn	V-shaped valley in the upper course of the Breamish	V-shaped valley in the upper course of the Breamish, on Linhope Burn	Typical bedload at site 1 on Het Burn
Bedload at site2 Near Linhope Spout	Bedload from site 1 - Het Burn	View towards site 2, below Linhope Spout waterfall	Site 1 on Het Burn
	Confluence of Het Burn and Linhope Burn - near site 1	Linhope Spout waterfall

Measuring stones with callipers	River Breamish close to site 4	Measuring Velocity	Site 4 near a meander
	Site 7 on the river Breamish	Collecting bed load
Depth	Width	Measuring stones	Velocity
The equipment used on the day	Oranges in full flow!	A site in the middle reaches
PHOTOGRAPHS FROM 2015
Bank erosion Downstream	Bank erosion next to car park	Bank sediment	Deposited bedlaod
Site in middle reaches	Outside of a meander bend	Rock armour against outer bend erosion	Tributary valley
View of U-shaped valley	View of V-shaped valley	Plan view of U-shaped valley

. How to use maps How to analyse graphs