Report Cover Vol I - Clare County Library

The County Clare Wetlands Survey Patrick Crushell & Peter Foss 2008
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4.2.4 Clare Rivers
Due to the complexity of mapping rivers accurately these are presented within a separate (linear)
shapefile. The river dataset originates from the EPA and has the following attributes associated with it:
SEG_CD
NAME
SOURCE
LEN
ORDER
Unique segment code which identifies the segment of river.
Name of river segment.
The source of the habitat shape is given in this field, this relates to the dataset
from which the habitat information originates.
Refers to the length of river segment.
Refers to a classification system known as the ‘Strahler’ stream order. It ranges
from 1 upwards. 1 refers to first order streams, 2 refers to second-order stream
which form when two first-order streams come together. When two second-order
streams come together, they form a third-order stream etc. While the rivers have
not been classified to level three in Fossitt, it generally follows that lower order
streams fit into the upland eroding streams category (FW1) while higher order
rivers fit into the lowland depositing streams (FW2).
4.2.5 CWS Spring Sites
Springs are mapped separately as points in an individual file. These sites are mainly extracted from the
Geological Survey of Ireland Karst Features dataset. The following attributes are associated with this file:
NAME
Name of spring site.
TOWNLAND
Townland name.
FOSSITT
Fossitt habitat code.
FOS_CODE_1 Alphanumeric code according to Fossitt (2000) to level 1.
FOS_CODE_2 Alphanumeric code according to Fossitt (2000) to level 2.
FOS_CODE_3 Alphanumeric code according to Fossitt (2000) to level 3.
SOURCE
Dataset from which site originated.
X_COORD
Automatically generated field giving the (X) coordinate of the shape.
Y_COORD
Automatically generated field giving the (Y) coordinate of the shape.
4.2.6 Drainage Ditches
Drainage ditches are presented within a separate (linear) shapefile. Such a ubiquitous habitat type is
often not mapped during habitat mapping exercises due to scale. There are occasional records of
drainage ditches mapped in County Clare and these are contained within this file. The following attribute
fields are attached to the file:
LENGTH
Calculation field which calculates the length of the feature.
SOURCE
Dataset from which site originated.
FOSSITT
Fossitt habitat code.
FOS_CODE_1 Alphanumeric code according to Fossitt (2000) to level 1.
FOS_CODE_2 Alphanumeric code according to Fossitt (2000) to level 2.
FOS_CODE_3 Alphanumeric code according to Fossitt (2000) to level 3.
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