Figure 8. A photograph taken at Site 3 following the 2020-21 wet season. Rills formed during uncontrolled overland flow. The engineer’ s maintenance plan is overlaid on the photograph. A bund was constructed above the site to prevent this from happening again.
Stability achieved
2.0
2 2
The stability ratings given to the large-scale sites are displayed in Figure 9 and in Table 3. Sites 2 and 3 were given a‘ Stable’ rating in January 2025, approximately 4½ years after initial works were undertaken. However, this rating comes with a caveat: while these sites are stable for a reshaped landscape; they will not have the stability and associated resilience of comparable intact landscapes with soil profiles that have never been disturbed and with complex, biodiverse vegetation. Furthermore, these sites have not been tested with drought or flood. Sites 1 and 4 were deemed to be‘ mostly stable’ and Site 5‘ partly stable’; the partly stable rating reflects the limited treatment of the extensive‘ badlands’ together with the success of the revegetation in the immediate catchment.
1.5
1.0
0.5
0.0 Stable
Mostly stable
1
Partly stable
0
Active / unstable
Figure 9. Level of stability achieved at treated large-scale gullies 4 – 5 years after the initial treatment( assessed December 2024).
NQ DRY TROPICS 21