CODES FOR WETLANDS


Landscape Position


ES         Estuarine

LE         Lentic

LR         Lotic river

LS         Lotic stream

MA         Marine

TE         Terrene


Lotic Gradient


1         Low

2        Middle

3        High

4         Intermittent

5        Tidal

6        Dammed

a         lock and dammed

b        run-of-river dam

c         beaver

d        other dammed

7         Artificial (ditch)


Lentic Type


1         Natural deep lake (see also Pond codes for possible specific types)

a         main body

b         open embayment

c         semi-enclosed embayment

d         barrier beach lagoon

2         Dammed river valley lake

a         reservoir

b         hydropower

c         other

3         Other dammed lake

a         former natural

b         artificial

4         Excavated lake

a         quarry lake

5         Other artificial lake


Estuary Type


1         Drowned river valley estuary

a         open bay (fully exposed)

b         semi-enclosed bay

c         river channel

2         Bar-built estuary

a         coastal pond-open

b         coastal pond-seasonally closed

c         coastal pond-intermittently open

d         hypersaline lagoon

3         River-dominated estuary

4         Rocky headland bay estuary

a         island protected

5         Island protected estuary

6         Shoreline bay estuary

a         open (fully exposed)

b         semi-enclosed

7         Tectonic

a         fault-formed

b         volcanic-formed

8         Fjord

9         Other


Inland Landform


SL         Slope

SLpa         Slope, paludified


IL         Island*

ILde         Island, delta

ILrs         Island, reservoir

ILpd         Island, pond


FR         Fringe*

FRil         Fringe, island*

FRbl         Fringe, barrier island

FRbb         Fringe, barrier beach

FRpd         Fringe, pond

FRdm         Fringe, drowned river mouth


FP         Floodplain

FPba         Floodplain, basin

FPox         Floodplain, oxbow

FPfl         Floodplain, flat

FPil         Floodplain, island


IF         Interfluve

IFba         Interfluve, basin

IFfl         Interfluve, flat


BA         Basin

BAcb         Basin, Carolina bay

BApo         Basin, pocosin

BAcd         Basin, cypress dome

BApp         Basin, prairie pothole

BApl         Basin, playa

BAwc         Basin, West Coast vernal pool

BAid         Basin, interdunal

BAwv         Basin, woodland vernal

BApg         Basin, polygonal

BAsh         Basin, sinkhole

BApd         Basin, pond

BAgp         Basin, grady pond

BAsa         Basin, salt flat

BAaq         Basin, aquaculture (created)

BAcr         Basin, cranberry bog (created)

BAwm         Basin, wildlife management (created)

BAip         Basin, impoundment (created)

BAfe         Basin, former estuarine wetland

BAff         Basin, former floodplain

BAfi         Basin, former interfluve

BAfo         Basin, former floodplain oxbow

BAdm         Basin, drowned river-mouth


FL         Flat

FLsa         Flat, salt flat

FLff         Flat, former floodplain

FLfi         Flat, former interfluve

*Note: Inland slope wetlands and island wetlands associated with rivers, streams, and lakes are designated as such by the landscape position classification (e.g., lotic river, lotic stream, or lentic), therefore no additional terms are needed here to convey this association.


Coastal Landform


IL         Island

ILdt         Island, delta

ILde         Island, ebb-delta

ILdf         Island, flood-delta

ILrv         Island, river

ILst         Island, stream

ILby         Island, bay


DE         Delta

DEr         Delta, river-dominated

DEt         Delta, tide-dominated

DEw         Delta, wave-dominated

       

FR         Fringe

FRal         Fringe, atoll lagoon

FRbl         Fringe, barrier island

FRbb         Fringe, barrier beach

FRby         Fringe, bay

FRbi         Fringe, bay island

FRcp         Fringe, coastal pond

FRci         Fringe, coastal pond island

FRhl         Fringe, headland

FRoi         Fringe, oceanic island

FRlg         Fringe, lagoon

FRrv         Fringe, river

FRri         Fringe, river island

FRst         Fringe, stream

FRsi         Fringe, stream island


BA         Basin

BAaq         Basin, aquaculture (created)

BAid         Basin, interdunal (swale)

BAst         Basin, stream

BAsh         Basin, salt hay production (created)

BAtd         Basin, tidally restricted/road (not a management area)

BAtr         Basin, tidally restricted/railroad (not a management area)

BAwm         Basin, wildlife management (created)

BAip         Basin, impoundment (created)


Water Flow Path


PA         Paludified

IS         Isolated

IN         Inflow

OU         Outflow

OA         Outflow-artificial*

OP         Outflow-perennial

OI         Outflow-intermittent

TH         Throughflow

TA         Throughflow - artificial*

TN         Throughflow - entrenched

TI         Throughflow - intermittent

BI         Bidirectional Flow - nontidal

BT         Bidirectional Flow - tidal

*Note: To be used with wetlands connected to streams by ditches.


Other Modifiers (apply at the end of the code as appropriate)


br         barren

bv         beaver

ch         channelized flow

cl         coastal island (wetland on an island in an estuary or ocean including barrier islands)

cr        cranberry bog

dd         drainage divide

dr         partly drained

ed         freshwater wetland discharging directly into an estuary

fe         former estuarine wetland

fg         fragmented

fm         floating mat

gd         groundwater-dominated (apply to Water Flow Path only)

hi         severely human-induced

hw         headwater

li         lake island (wetland associated with a lake island)

md         freshwater wetland discharging directly into marine waters

ow         overwash

pi         pond island border

ri        river island (wetland associated with a river island)

sd         surface water-dominated (apply to Water Flow Path only)

sf         spring-fed

ss         subsurface flow

td         tidally restricted/road

tr         tidally restricted/railroad


Note: "ho" was formerly used to indicate human-induced outflow brought about by ditch construction; now this is addressed by the water flow path "OA" Outflow-Artificial.


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