NB: The 1km square is again divided by a grid into 100m squares. This gives the six figure grid reference usually used as a standard in biological recording.
When you locate the correct four figure grid reference for your 1km square on a 1:25000 scale map, you can clearly see the features of the square such as rivers, roads, field boundaries etc. The map will look something like the example shown.
It helps to check the square first for suitability. Because the sites are generated randomly, a square may sometimes include unsuitable areas such as unstable land or unsafe parts of town that are unmapped.
Your local knowledge will help you to rule these squares out. If you are unsure please ask, and if in any doubt about the safety of a square you can request another.
Select the square that you prefer from the list given to you, and write the grid reference you have chosen clearly on your survey form.
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