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- Human-made wetlands (31)
- Inland wetlands ( - )
- M -- Permanent rivers/streams/creeks; includes waterfalls (29)
- N -- Seasonal/intermittent/irregular rivers/streams/creeks (21)
- Sp -- Permanent saline/brackish/alkaline marshes/pools (87)
- Ss -- Seasonal/intermittent saline/brackish/alkaline marshes/pools (70)
- Ts -- Seasonal/intermittent freshwater marshes/pools on inorganic soils; includes sloughs, potholes, seasonally flooded meadows, sedge marshes (8)
- W -- Shrub-dominated wetlands; shrub swamps, shrub-dominated freshwater marshes, shrub carr, alder thicket on inorganic soils (1)
- Marine/Coastal wetlands (289)
- 1 - Untouched. No signs of man-made changes (20)
- 2 - Original habitats/landform still predominant (>50%) (85)
- 3 - Original habitats/landform partially modified (10-50% untouched) (58)
- 4 - Original habitats/landform highly modified (<10% untouched) (17)
- 5 - Original habitats/landform totally changed (4)