Create Drains
Line smoothing strength controls sharp turns and the smoothness of drain lines. Move the slider farther right to make the lines rounder, with fewer sharp turns.
Surface smooth strength applies an averaging filter to the field surface to remove bumps and dips without creating a full field earthwork design.
Min. drain length sets the minimum length a drain must have to be displayed on the surface.
Min. depression area sets the minimum surface area a depression must cover before T3RRA software will consider draining it.
Min. depression volume sets the minimum volume a depression must have before a drain is implemented.
Press Add Stop Line to create a black line with large red anchors at each end. Drain lines will not cross this line.
To confirm placement, press Lock Stop Lines, which appears next to Add Stop Line.
Press the white anchor in the center of the lines to create another red anchor so the lines can be adjusted. To add more stop lines, press Add Stop Line again.
A depression is drained only if it meets all minimum length, area, and volume criteria.