NB1 - Urban/developed

NB3 - Agricultural

NB8 - Open Water

NB9 - Bare Ground

GR1 - Short, Sparse, Dry Climate Grass

GR2 - Low Load, Dry Climate Grass

GR3 - Low Load, Very Coarse, Humid Climate Grass

GR4 - Moderate Load, Dry Climate Grass

GS1 - Low Load, Dry Climate Grass-Shrub

GS2 - Moderate Load, Dry Climate Grass-Shrub

GS3 - Moderate Load, Humid Climate Grass-Shrub

SH1 - Low Load Dry Climate Shrub

SH2 - Moderate Load Dry Climate Shrub

SH3 - Moderate Load, Humid Climate Shrub

SH4 - Low Load, Humid Climate Timber-Shrub

SH7 - Very High Load, Dry Climate Shrub

TU1 - Low Load Dry Climate Timber-Grass-Shrub

TU2 - Moderate Load, Humid Climate Timber-Shrub

TU3 - Moderate Load, Humid Climate Timber-Grass-Shrub

TU5 - Very High Load, Dry Climate Timber-Shrub

TL1 - Low Load Compact Conifer Litter

TL2 - Low Load Broadleaf Litter

TL3 - Moderate Load Conifer Litter

TL4 - Small downed logs

TL5 - High Load Conifer Litter

TL6 - Moderate Load Broadleaf Litter

TL7 - Large Downed Logs

TL8 - Long-Needle Litter

TL9 - Very High Load Broadleaf Litter