The below image shows a numbered diagram of the tool's interface, with a description of each component following:

1. Station selector: Choose from the dropdown which water level station to use for the forecast. A full list of all stations can be found on the MHL homepage. You can filter sites by typing either the station's number or name in the input field, then select the station by clicking on it.
2. Threshold selector: This field displays the currently selected flood threshold level. The plotted data relates the number of projected days where the tidal level will exceed this level. You can type the desired level into this field or use the slider in the following component.
3. Threshold slider: The slider provides an alternative way to select the desired flood threshold level, displayed in the threshold selector above. You can drag the slider bar up and down (or left and right on mobile) to select the desired flood threshold level. The box next to the slider will update with the currently selected level as you move it around, and the plot will update on release of the slider.
4. Forecast series selector: forecasts are provided the next 7 days based on an aggregated water level forecast which include both astronomical tide and weather related factors (excluding rainfall) and a longer term astronomical tide forecast for the coming year.
5. Download buttons: You can click this button to download the currently plotted data in CSV format for your own purposes. You will need to accept the disclaimer and user agreement before downloading will commence.