Planet WGSW-24010 User Manual page 72

Fill in required details on standard sketch-map record sheet (Appendix 5), eg river name, site
name, date etc.
Draw a sketch of the survey length, showing only in the broadest terms the general physical
character of the site. This should include important vegetation stands and permanent reference
features (such as a distance from a bridge or footpath sign) which would enable anyone else to
find the survey length with great precision in the future. In addition, mark on any unusual
features such as 'islands' of substrate supporting vegetation. In deep water, depth can be easily
measured using a grapnel.
The distance markings on the standard sketch sheet do not indicate which direction the
macrophyte survey should be undertaken. If starting at the upstream end of the survey length and
moving in a downstream direction, the left side of the paper will correspond to the left bank and
the direction of flow will be from the bottom to the top of the paper. If starting from the
downstream end and moving in a upstream direction (this may be preferable for safety reasons
- follow health and safety guidance), then turn the map upside down. It may be helpful to draw
in 'landmark' features before starting the sketch map, or to mark on the bank the mid-point of the
survey length, for reference.
Main features to mark on sketch map:
Location of river and its pathway
NGR for the start and end of the survey length
Width of channel - the width included in the survey
Relocation features - for both ends of the survey length if possible
Shading position and type - broken or dense
Grid north (found from OS map)
Dominant macrophyte stands
Extent of riverbanks -
Adjacent land use -
Depth of water -
Broken shade should be indicated by:
Dense shade should be indicated by:
Macrophyte stands should be indicated by:
Label clearly.
Appendix 6 gives examples of sketch maps which are more than adequate.
R&D Technical Report E38
riverbank (for the sketch map) is defined as the area before an
adjacent land use starts
for example arable, pasture, factory, waste, set aside,
houses/gardens
in m across the channel width
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