This anomaly is due to the abstraction of water from the Calder Intake to the Barnacre and Grizedale Lea reservoirs, grid-reference A reduce in water will make the channel width narrower. This is because less lateral erosion will occur, in-order to deepen the channel.
Which hypothesis will it be used to prove or disprove? Strengths of the data and method of collection Weaknesses of the data and method of collection Water Width The width of the river increases with distance downstream.
One person stood on one side of the river, the second on the other side and the last person was be recording the results while the measurement was being carried out. Firstly we got one person to stand one side of the river and hold the end of the tape measure where the surface of the water touches the shore then the other person layed the tape measure over the surface Debden brook coursework the water to the other side and took the measurement.
Finally, the last person Debden brook coursework would record the results as soon as possible to prevent writing down wrong data. Although we were told that it was measured exact and should not make a difference, however, there still is a chance that human error might have occurred when measuring the rope, and therefore is not very accurate.
This could mean that the river was now wider than it usually would have been, because of the extra intake of water it would have had. Depth The depth of the river increases with distance downstream.
The first step in collecting the measurement for the depth was to decide where the depth was to be measured. For this it was decided that at each site we would measure the depth in 3 separate parts of the portion of the river we were measuring on. So, for every individual site we would measure the depth on the right hand side of the river, the left hand side of the river, and lastly the middle of the river.
This was done so that we could work out an accurate average depth by adding these three measurements together and dividing this by three. The second step in finding depth was by putting the meter stick vertically on the river bed. To have an accurate measurement it was vital that the meter stick was facing the river bank because otherwise the flow of water would push up against the front of the meter stick making the measurement look bigger than it really is.
The depth was then measured by looking at where the water level was against the meter stick. For the best results, we had one person holding the meter stick, and the other person reading off and recording the measurements. This meant that I could get the most accurate result possible — The technique, although it was time consuming, was very easy to learn and to carry out.
This could mean that the river was now deeper than it usually would have been, because of the extra intake of water it would have had.
Velocity The velocity of the river increases with distance downstream. These being a cork, a meter stick and a stop watch. For this measurement we used 4 people. One to record the data, one to put the cork in the water and two to mark the distance 1m at each end.
To start we held the meter stick out horizontally in the water facing downstream. We then put the cork in the water slightly further upstream in order for it to build up momentum and reach maximum speed so we got more reliable results.
As soon as the cork passed the 0 point on the meter stick the person holding that end of the stick shouted go and the person holding the stop watch started the timer. Then as soon the cork got to the end of the meter stick the person holding that end shouted stop and the person holding the stop watch stopped the timer to give the reading.
We tried to start and stop the stop watch on the exact split second to get accurate results.The wetted perimeter of the river increased from 1m at site 1 (Debden Brook) to 2m at site 2 (Debden Brook) and m at site 3 (The River Roding).4/5.
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ESSAY SAMPLE ON Debden Brook Rivers Coursework Data Collection TOPICS SPECIFICALLY FOR YOU. Order now. How was the data collected? Strengths of the data and method of collection.
Weaknesses of the data and method of collection. Water Width. The width of the river increases with distance downstream. Start studying geography field work DEBDEN BROOK. Learn vocabulary, terms, and more with flashcards, games, and other study tools.
plot course of Debden brook and see where they lie in terms of flood risk.
shows us where highest risk are along course of debden rook - lower course. how to use flow lines. plot the sites we used of debden brook and show velocity increasing downstream.
shows us how velocity changes downstream a river - increases.