Quality Score
High (> 0.8) - authoritative source
Medium (0.5 - 0.8) - needs verification
Low (< 0.5) - community/derived
HLZ Confidence
Confirmed - LINZ/DOC or ground-truthed
High - 1m LiDAR DEM + canopy check
Medium - 8m DEM, no canopy data
Low - slope criteria only