Graph Descriptions 1

Graph Descriptions From source to mouth and from site to site the width of the river increased, ‘site 1’ being the smallest and ‘site 2’ being the biggest,. ‘site 4’ is 14.8 times wider than ‘site 1’ the depth of the river starts quite deep at 21.12cms and then the next site is more shallow at 8cms however form there on the next sites get gradually deeper. ‘site 3’ being 13cms and ‘site 4’ being 19.12cms this making ‘site 1’ deepest and 2.64 times deeper than ‘site 2’. The CSA of the river increases downstream. At each of the sites the CSA increases and ‘site 4’ being 22.4 times larger then ‘site 1’ With the velocity (cork) test the velocity increased form ‘site 1’ to ‘site 2’ largely as ‘site 1’ is 5.2 times higher than ‘site 1’ however from then on the waters velocity only decreases and from ‘site 2’ to ‘site 3’ to ‘site 4’ it decreases quite rapidly. However in the other velocity test with the flowmeter, the results came back differently. The velocity increases from ‘site 1’ to ‘site 3’ but then it drops down again at ‘site 4’. The velocity was lowest at ‘site 1’ and highest at ‘site 3’ and ‘site 3’ was 4.5 times higher than ‘site 1’, this meaning the velocity was higher under the surface of the river but lower on the surface.