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The aim of this investigation is to explore the channel characteristics of the River Chess.

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Introduction

The aim of this investigation is to explore the channel characteristics of the River Chess. My main interest involve in understanding Hydrology, and how the river changes as it goes downstream. To obtain my results I visited a field centre in Amersham, were we were put into groups and were guided by a member of the FSC centre. We started of at Chesham Moore which is the source of the River Chess; its confluence is the River Colne at Rickmansworth which feeds into the River Thames which then follows into the sea. * Gradient- will decrease downstream, starting at a high point. * Width- will get wider due to more water feeding in from the ground, therefore it will increase downstream. * Depth- will get deeper downstream. * Velocity- will become slower, as will the gradient, river will become deeper and wider therefore the velocity will decrease. * Cross-sectional area- will increase as there will be more water. * Discharge- is the amount of water you have, and how much of it will pass through a certain point. ...read more.

Middle

Discharge The Wetted Perimeter-using a tape measure The Hydraulic Radius The Manning's The Averages Whilst I am at each site I will take brief notes as well as detailed diagrams of each river and it's habitat to illustrate a more vivid investigation. I will also read into different sources to help me with my investigation such as the journal the Geographical Review. In addition to this I will be relying on computing resources to help me analyse data. Before we set out on our investigation we had several aims to consider. Does the river discharge increase the further from the source? Is there a relationship between river width and stream velocity? As the wetted perimeter increases, river velocity decreases. In my analysis of the River Chess I selected three areas within the river study. They were the Upper, Middle and lower part of the river. I accomplished this by stratified sampling. The readings I received from theseareas The highest means have been highlighted in the table above, there are a few anomalies in the table above, for example the mean water depth at site three is extremely high to the rest this could be due to the other groups getting their measurements wrong, or it could be due to the water levels rising. ...read more.

Conclusion

This river was situated by a field. There was also a farm near by which would explain the few animals there The third site we visited was Scots bridge Mill, which again was close by to a large field, though there was a fence, along side the river acting as a precaution. I will compare my hypothesis with my actual results to see if there are any anomalies. The gradient prediction did not match my actual results though this may have been due to the weather changes, as we were taking our measurements the wind was increasing it was only inevitable that there would be a few anomalies. I predicted that the gradient would increase though my result show it stating off fairly high then decrease but then only to increase again. Although my predictions about the width and the depth were correct as they increased downstream. My predictions about the velocity of the river also were correct as I presumed that the velocity would decrease which it did because the river became deeper and wider. I was also correct about the cross-sectional area as it increase due to the increase in water. The discharge increases downstream as the availability of water increases. ...read more.

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