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Water Levels of the two
CCW transects
There
are two Transects. Transect 1 is in the north starting close to
Airman's carpark and extends out into the Warren, Transect 2 is nearer
the beach and started some where near the carpark, but 2a has never
been located in part because CCW didnt record the locations of the
dipwells accurately with GPS.
There have been changes in the area which could have affected the water
levels near to the forest.
- General sea level rise and the erosion of the coast line
- Contractors enlarging and deepening the slack closest to
the sea and the forest in 2014 which also resulted in well
2D being crushed.
- The Clearfell experiment which removed 2 ha of mature
forest along the forest bounday in 2019.
The water level records show that there has been an increase in
waterlevels since the initial 1989-1996 monitoring periods. Waterlevels
in Transect 1 are more likely to be close to ground level, but water
levels in Transect 2 cause ponding to a greater depth.
CCW Transect 1
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CCW Transect 2
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Looking at the waterlevels in the Forest and the Warren seperately
water
levels in the warren are generally higher and it is water tables in the
forest which have recovered most since 1996. Wells 2D although in
the
warren has a profile more similar to the forest wells.
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Forest Transects
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Warren Transects
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When the forest and warren wells are seperated for the two transects it
is easy to see that
- The dune water levels in the wells in transect 1 are
similar to each other as are the waterleveles in transect 2, but that
water levels for the dunes in transect 2 are lower than for the dunes
in transect 1.
- Water levels in the forest in both transects follow a
similar pattern
- Water levels in the forest and the dunes in transect
2 follow a similar pattern
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In the Graphs below it can be seen that :
- Water Levels in wells 1A,1B, 2B 2C and 2D are similar
- Water levels in wells 1C,1D, and 2B are similar
especially from 2012
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Previously in the graphs above it was shown that waterlevels in the
dune wells 2E, 2F and 2G were similar.
- In the graph on the left below waterlevels for 1C, 1D
and 2B are plotted with 2G and show that all those wells follow a
similar pattern since 2012.
- In the graph on the right waterlevels for 1D, 2B, 2E,
2F, and 2G are plotted and show that all those wells follow a similar
pattern since 2006.
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Below
is a map
where the CCW wells are colour coded to denote the similarities (for
the best view click this link).
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Copyright
©
Martin Hollingham
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