There are various tools that can be used when selecting or moving from grid square to another. A National Grid square may be selected from the map showing all the grid squares by clicking in the square:-
Moving to an adjacent square is easily accomplished by using the tool below:-
The towns contained in the database may be displayed on the selected National Grid square. If a town is selected into the staus bar, it is displayed in blue. Left clicking on any coloured circle will display the hydrological data for that town:-
