Bongers Greycliffe-Jambin Wetland (Revoked)

Bongers Greycliffe-Jambin Wetland (Revoked) was a soil carbon project located between the rural localities of Greycliffe and Jambin, approximately 30km north of the major town of Biloela in Central Queensland. The project was originally registered in May 2017 and covered a total area of 727 hectares within the Banana Shire region. In August 2025, the project was revoked under Section 30 of the CFI Rule, which indicates the proponent voluntarily withdrew the project from the scheme.

The project operated under the Measurement of Soil Carbon Sequestration in Agricultural Systems methodology (2018 version), having transitioned from an earlier 2014 method. This methodology rewards landholders for increasing soil organic carbon stocks through changes in land management. Specific activities listed for this project included altering grazing intensity, applying nutrients to address deficiencies, converting to reduced tillage practices, and rejuvenating pastures via seeding and mechanical soil redistribution. To generate credits, the proponent would have been required to demonstrate a measurable increase in soil carbon levels compared to a baseline through physical soil sampling.

Environmentally, the Jambin and Greycliffe area is situated in the Callide Valley, a region renowned for its agricultural productivity. The climate is sub-tropical with rainfall significantly dominant in the summer months. The local terrain typically features fertile alluvial soils and heavy cracking clays (Vertosols), which are well-suited for both dryland cropping and cattle grazing. The specific inclusion of "Wetland" in the project title suggests the project area likely included low-lying ephemeral wetland country, where management strategies may have focused on balancing hydration and conservation with grazing pressure.