The site's values, conveyed by their key attributes, are in good condition and are likely to be maintained for the foreseeable future, provided that current conservation measures are maintained.

While some concerns exist, with minor additional conservation measures the site’s values, conveyed by their key attributes, are likely to be essentially maintained over the long-term.

The site’s values, conveyed by their key attributes, are threatened and/or showing signs of deterioration. Significant additional conservation measures are needed to maintain and/or restore attributes over the medium to long-term.

The site’s values, conveyed by their key attributes, are severely threatened and/or deteriorating. Immediate large-scale additional conservation measures are needed to maintain and/or restore the key attributes over the short to medium-term or the heritage values may be lost.