See Also...306 308 ISOM Index Water and marsh index previous next
revision
05/00
307 Minor water channel
A natural or man-made minor water channel which may contain water only intermittently.
Colour: blue.
Line width 0.14mm, line length 1.25mm, gap 0.25mm
As ISOM 2000 but line width was 0.125mm
Defined as line symbol 307.0. Can be drawn with any tool but straight line mode or bézier mode are preferable.
If the bézier tool is used, care must be taken as gap spacing is dependent on location of nodes and handles. See bézier topic for more information.
The default definition has a gap between dashes of 0.3mm, compared with the ISOM specified 0.25mm. Variation is allowed in the specification, see the Variations in Symbols topic for details.
See minimum dimensions but specifically - shortest dashed line: at least two dashes.
If there are many ditches, the principle channels are best drawn with the solid blue symbol.
Ditch: An artificial watercourse with slow moving or standing water.
See the Crossable watercourse topic for tips.
First try adding a node at, or close to, the junction, next try the cut and reverse line tools. If the spacing is still incorrect, cut back and add an extra line at the junction, either with or without gaps.
Click to go to the top of this page