Show Depressions

This tool displays all depressions in the selectedvisible surfacesurfaces. orThe anyoverlay layer shows the depth of the depression thatwith meetsa thewhite minimumto requirementsblue thatscale, canstarting beat set.white for zero depth, going to deep blue.

Tab: Whole Field

• ‘'☐ Only include depressions >=≥ (X)m’m' enablesallows the settingyou to limitfilter theout depressionsshallow displayed to only those that exceed a set surface area size.depressions. 
• ‘Transparency’'Transparency' is a slider which adjusts how clearly the depressions will be displayed in the working area. With this, you can easily check the elevation surface underneath.
• ‘'☐ Output surface layer’layer' checkboxcontrols whether the shown overlay layer will createbe a design layerretained when you click ‘Close’. If you are just checking their locations or volumes, you can untick it.

Statistics about the depressions found are displayed.

Tab: Single Depression

Clicking on ‘Close’a depression with this window open (from either tab) will switch to show this tab and show an outline on the map around the selected depression. This tab displays statistics about the selected depression:

• 'Max depth' This is the maximum depth of the selected depression.
• 'Total volume' This is the total volume of the selected depression, in your selected water and dirt volume units.
• 'Total area' This is the total area of the selected depression.
• 'With freeboard' Freeboard is how far down the desired maximum water level is from the highest possible water level. For dams, this is usually chosen to reduce the risk of erosion leading to a breach or washout.
• 'Volume' This is the volume in the depression below the freeboard level. As freeboard increases, this will decrease.
• 'Area' This is the area of the depression at the chosen freeboard level. As freeboard increases, this will decrease.
• 'Make polygon from area' Click this to create a polygon from the outline on the map.

Further to the above statistics, detailed plots are available for more detailed analysis.

• 'Volume plot' The volume of the depression as a percentage of the total volume as it varies with depth is shown. The position of freeboard is indicated with a dashed line on the plot.
• 'Area plot' The area of the depression as a percentage of the total area as it varies with depth is shown. The position of freeboard is indicated with a dashed line on the plot.
• 'Stats' This sub-tab contains the information displayed in the volume and area plots. Click 'Copy Stats To Clipboard' copy it as text to the clipboard. The 'Separator' option allows changing the separator between values in the text. For copying to a spreadsheet, Tab is recommended.