| code | name | description | position | form |
|
AN
| Anthropogenic | Anthropogenic earthen or sealed structures and surfaces. | Many | Impermeable |
|
BP
| Bench Plateau | Natural bench plateaus- common in Sichuan. | >5m above floodline | 0 - 30% Slope between steep slopes |
|
CA
| Small Canal | Flowing anthropogenic watercourse >1m deep (<30m width). | >1m below low water | Channel |
|
CB
| Large Canal | Flowing anthropogenic watercourse >1m deep (>30m width). | >1m below low water | Channel |
|
CM
| Canal Margin | Margins of Flowing anthropogenic watercourse <1m deep. | floodline to 1m below low water | Sloping |
|
EX
| Excavated | Excavated earthworks; including Mines & Pits (>30m width). | >2m deep | Basin |
|
FM
| Flowing Marsh | Slowly flowing waterbody <1m deep; wet all year, may be anthropogenic or natural. | usually in floodplain, 0 to -1m below | Channel |
|
FP
| Floodplain | River floodplains. | 0 to 5m above floodline | <3% slope |
|
FS
| Foot Slope | Flat areas at bottom of hills with non-alluvial soils. | >5m above floodline | <5% Slope |
|
LA
| Lake | Lentic waterbody >1m deep (>30m width). | >1m below low water | Lentic |
|
MA
| Marsh | Lentic waterbody <1m deep; moist all year. | 0 to -1m below | Basin |
|
MO
| Mounded | Mounded earthworks; including Dams; Mounds (>30m width). | >2m high | Mound |
|
MS
| Shallow Stream | Gravity-flowing natural watercourse <1m deep (<30m width). | above floodplain/ <1m max depth | Channel |
|
PA
| Small Pond | Lentic waterbody >1m deep (<30m width). | >1m below low water | Lentic |
|
PB
| Large Pond | Lentic waterbody >1m deep (>30m width). | >1m below low water | Lentic |
|
RE
| Reservoir | Dammed waterbody >1m deep (>30m width). | >1m below low water | Lentic |
|
RM
| River Margin | Margins of Flowing natural watercourse <1m deep. | floodline to 1m below low water | Sloping |
|
RP
| Retention Pond | Excavated retention ponds, usually with drainage systems, <1m deep; wet all year. | 0 to 1m below low water | Basin |
|
RS
| Stream | Flowing natural watercourse >1m deep (<30m width). | >1m below low water | Channel |
|
RV
| River | Flowing natural watercourse >1m deep (>30m width). | >1m below low water | Channel |
|
SL
| Sloping | Sloping land. | >5m above floodline | Hills, 0 - 30% Slope |
|
SM
| Seasonal Stream | Seasonal or episodic flowing natural watercourse with flooding frequency preventing regular agricultural USE (<30m width). | floodline to max channel depth | Channel |
|
SR
| Seasonal River | Seasonally or episodal flowing natural watercourse; variable depth (>30m width). | floodline to max channel depth | Channel |
|
SS
| Steep Slope | Steep slopes. | >5m above floodline | >30% Slope |
|
SU
| Summit | Tops of hills; plateaus. | >5m above floodline | summit, 0 -30% Slope between steep slopes |
|
TS
| Terraced Slope | Terraced slopes. | >5m above floodline | Anthropogenic Terrace on >5% slope |
|
WM
| Water Margin | Margins of Lentic waterbody that are <1m deep (pond; lake; reservoir). | floodline to 1m below low water | Sloping |