Complete FCode list for NHD Hydrography Features

 

NHDinGEO FCodes by layer

NHDFlowline

NHDWaterbody

NHDLine

NHDPoint

NHDArea

NHDEvent

 

 

 

 

NHDFlowline

 

Feature Type

FCode

Description

ARTIFICIAL PATH

55800

feature type only: no attributes

CANAL/DITCH

33600

feature type only: no attributes

CANAL/DITCH

33601

Canal/Ditch Type|aqueduct

CANAL/DITCH

33603

Canal/Ditch Type|stormwater

COASTLINE

56600

feature type only: no attributes

CONNECTOR

33400

feature type only: no attributes

PIPELINE

42800

feature type only: no attributes

PIPELINE

42801

Product|water; Pipeline Type|aqueduct; Relationship to Surface|at or near

PIPELINE

42802

Product|water; Pipeline Type|aqueduct; Relationship to Surface|elevated

PIPELINE

42803

Product|water; Pipeline Type|aqueduct; Relationship to Surface|underground

PIPELINE

42804

Product|water; Pipeline Type|aqueduct; Relationship to Surface|underwater

PIPELINE

42805

Product|water; Pipeline Type|general case; Relationship to Surface|at or near

PIPELINE

42806

Product|water; Pipeline Type|general case; Relationship to Surface|elevated

PIPELINE

42807

Product|water; Pipeline Type|general case; Relationship to Surface|underground

PIPELINE

42808

Product|water; Pipeline Type|general case; Relationship to Surface|underwater

PIPELINE

42809

Product|water; Pipeline Type|penstock; Relationship to Surface|at or near

PIPELINE

42810

Product|water; Pipeline Type|penstock; Relationship to Surface|elevated

PIPELINE

42811

Product|water; Pipeline Type|penstock; Relationship to Surface|underground

PIPELINE

42812

Product|water; Pipeline Type|penstock; Relationship to Surface|underwater

PIPELINE

42813

Product|water; Pipeline Type|siphon; Relationship to Surface|unspecified

PIPELINE

42814

Product|water; Pipeline Type|general case

PIPELINE

42815

Product|water; Pipeline Type|penstock

PIPELINE

42816

Product|water; Pipeline Type|aqueduct

STREAM/RIVER

46000

feature type only: no attributes

STREAM/RIVER

46003

Hydrographic Category|intermittent

STREAM/RIVER

46006

Hydrographic Category|perennial

STREAM/RIVER

46007

Hydrographic Category|ephemeral

UNDERGROUND CONDUIT

42000

feature type only: no attributes

UNDERGROUND CONDUIT

42001

Positional Accuracy|definite

UNDERGROUND CONDUIT

42002

Positional Accuracy|indefinite

UNDERGROUND CONDUIT

42003

Positional Accuracy|appoximate

 

 

 

 

NHDWaterbody

 

Feature Type

FCode

Description

ESTUARY

49300

feature type only: no attributes

ICE MASS

37800

feature type only: no attributes

LAKE/POND

39000

feature type only: no attributes

LAKE/POND

39001

Hydrographic Category|intermittent

LAKE/POND

39004

Hydrographic Category|perennial

LAKE/POND

39005

Hydrographic Category|intermittent; Stage|high water elevation

LAKE/POND

39006

Hydrographic Category|intermittent; Stage|date of photography

LAKE/POND

39009

Hydrographic Category|perennial; Stage|average water elevation

LAKE/POND

39010

Hydrographic Category|perennial; Stage|normal pool

LAKE/POND

39011

Hydrographic Category|perennial; Stage|date of photography

LAKE/POND

39012

Hydrographic Category|perennial; Stage|spillway elevation

PLAYA

36100

feature type only: no attributes

RESERVOIR

43600

feature type only: no attributes

RESERVOIR

43601

Reservoir Type|aquaculture

RESERVOIR

43603

Reservoir Type|decorative pool

RESERVOIR

43604

Reservoir Type|disposal-tailings pond; Construction Material|earthen

RESERVOIR

43605

Reservoir Type|disposal-tailings pond

RESERVOIR

43606

Reservoir Type|disposal-unspecified

RESERVOIR

43607

Reservoir Type|evaporator

RESERVOIR

43608

Reservoir Type|swimming pool

RESERVOIR

43609

Reservoir Type|treatment-cooling pond

RESERVOIR

43610

Reservoir Type|treatment-filtration pond

RESERVOIR

43611

Reservoir Type|treatment-settling pond

RESERVOIR

43612

Reservoir Type|treatment-sewage treatment pond

RESERVOIR

43613

Reservoir Type|water storage; Construction Material|nonearthen

RESERVOIR

43614

Reservoir Type|water storage; Construction Material|earthen; Hydrographic Category|intermittent

RESERVOIR

43615

Reservoir Type|water storage; Construction Material|earthen; Hydrographic Category|perennial

RESERVOIR

43617

Reservoir Type|water storage

RESERVOIR

43618

Reservoir Type|unspecified; Construction Material|earthen

RESERVOIR

43619

Reservoir Type|unspecified; Construction Material|nonearthen

RESERVOIR

43621

Reservoir Type|water storage; Hydrographic category|perennial

RESERVOIR

43623

Reservoir Type|evaporator; Construction Material|earthen

RESERVOIR

43624

Reservoir Type|treatment

RESERVOIR

43625

Reservoir Type|disposal

RESERVOIR

43626

Reservoir Type|disposal; Construction Material|nonearthen

SWAMP/MARSH

46600

feature type only: no attributes

SWAMP/MARSH

46601

Hydrographic category|intermittent

SWAMP/MARSH

46602

Hydrographic category|perennial

 

 

 

 

NHDLine

 

Feature Type

FCode

Description

BRIDGE

31800

feature type only: no attributes

DAM/WEIR

34300

feature type only: no attributes

DAM/WEIR

34305

Construction Material|earthen

DAM/WEIR

34306

Construction Material|nonearthen

FLUME

36200

feature type only: no attributes

GATE

36900

feature type only: no attributes

LEVEE

56800

feature type only: no attributes

LOCK CHAMBER

39800

feature type only: no attributes

NONEARTHEN SHORE

41100

feature type only: no attributes

RAPIDS

43100

feature type only: no attributes

REEF

43400

feature type only: no attributes

SINK/RISE

45000

feature type only: no attributes

SOUNDING DATUM LINE

50300

feature type only: no attributes

SOUNDING DATUM LINE

50301

Positional Accuracy|approximate

SOUNDING DATUM LINE

50302

Positional Accuracy|definite

TUNNEL

47800

feature type only: no attributes

WALL

48300

feature type only: no attributes

WATERFALL

48700

feature type only: no attributes

 

 

 

 

NHDPoint

 

Feature Type

FCode

Description

DAM/WEIR

34300

feature type only: no attributes

DAM/WEIR

34305

Construction Material|earthen

DAM/WEIR

34306

Construction Material|nonearthen

GAGING STATION

36701

Gaging Station Status|Active; Record|Continuous

GATE

36900

feature type only: no attributes

LOCK CHAMBER

39800

feature type only: no attributes

RAPIDS

43100

feature type only: no attributes

RESERVOIR

43600

feature type only: no attributes

RESERVOIR

43601

Reservoir Type|aquaculture;

RESERVOIR

43603

Reservoir Type|decorative pool;

RESERVOIR

43604

Reservoir Type|disposal-tailings pond; Construction Material|earthen

RESERVOIR

43605

Reservoir Type|disposal-tailings pond

RESERVOIR

43606

Reservoir Type|disposal-unspecified

RESERVOIR

43607

Reservoir Type|evaporator

RESERVOIR

43608

Reservoir Type|swimming pool

RESERVOIR

43609

Reservoir Type|treatment-cooling pond

RESERVOIR

43610

Reservoir Type|treatment-filtration pond

RESERVOIR

43611

Reservoir Type|treatment-settling pond; Construction Material|unspecified

RESERVOIR

43612

Reservoir Type|treatment-sewage treatment pond

RESERVOIR

43613

Reservoir Type|water storage; Construction Material|nonearthen

RESERVOIR

43614

Reservoir Type|water storage; Construction Material|earthen; Hydrographic Category|intermittent

RESERVOIR

43615

Reservoir Type|water storage; Construction Material|earthen; Hydrographic Category|perennial

RESERVOIR

43617

Reservoir Type|water storage

RESERVOIR

43618

Reservoir Type|unspecified; Construction Material|earthen

RESERVOIR

43619

Reservoir Type|unspecified; Construction Material|nonearthen

RESERVOIR

43621

Reservoir Type|water storage; Hydrographic category|perennial

RESERVOIR

43623

Reservoir Type|evaporator; Construction Material|earthen

RESERVOIR

43624

Reservoir Type|treatment

RESERVOIR

43625

Reservoir Type|disposal

RESERVOIR

43626

Reservoir Type|disposal; Construction Material|nonearthen

ROCK

44100

feature type only: no attributes

ROCK

44101

Relationship to Surface|abovewater

ROCK

44102

Relationship to Surface|underwater

SINK/RISE

45000

feature type only: no attributes

SPRING/SEEP

45800

feature type only: no attributes

WATER INTAKE/OUTFLOW

48500

feature type only: no attributes

WATERFALL

48700

feature type only: no attributes

WELL

48800

feature type only: no attributes

 

 

 

 

NHDArea

 

Feature Type

FCode

Description

AREA OF COMPLEX CHANNELS

53700

feature type only: no attributes

AREA TO BE SUBMERGED

30700

feature type only: no attributes

BAY/INLET

31200

feature type only: no attributes

BRIDGE

31800

feature type only: no attributes

CANAL/DITCH

33600

feature type only: no attributes

CANAL/DITCH

33601

Canal/Ditch Type|aqueduct

CANAL/DITCH

33603

Canal/Ditch Type|stormwater

DAM/WEIR

34300

feature type only: no attributes

DAM/WEIR

34305

Construction Material|earthen

DAM/WEIR

34306

Construction Material|nonearthen

FLUME

36200

feature type only: no attributes

FORESHORE

36400

feature type only: no attributes

INUNDATION AREA

40300

feature type only: no attributes

INUNDATION AREA

40307

Inundation Control Status|not controlled

INUNDATION AREA

40308

Inundation Control|controlled

INUNDATION AREA

40309

Inundation Control|controlled; Stage|flood elevation

LEVEE

56800

feature type only: no attributes

LOCK CHAMBER

39800

feature type only: no attributes

RAPIDS

43100

feature type only: no attributes

SEA/OCEAN

44500

feature type only: no attributes

SPILLWAY

45500

feature type only: no attributes

STREAM/RIVER

46000

feature type only: no attributes

STREAM/RIVER

46003

Hydrographic Category|intermittent;

STREAM/RIVER

46006

Hydrographic Category|perennial;

STREAM/RIVER

46007

Hydrographic Category|ephemeral;

SUBMERGED STREAM

46100

feature type only: no attributes

WASH

48400

feature type only: no attributes

WATER INTAKE/OUTFLOW

48500

feature type only: no attributes

 

 

 

 

NHDEvent

 

 

 

 

 

The NHD FCodes were designed to encode the content of USGS Topographic Maps to allow for a totally automated map production process.   Features, attributes and attribute values were defined to capture all the symbols and descriptive labels found on the maps.  When the NHD was implemented, the combinations of feature types and attributes were also encoded as an FCode.  Although many people use the NHD to make maps, the need for a large-scale automated process became less important as digital data in GIS systems became more common.  The FCodes codes were simplified and some of the detail found on the original USGS Topo Maps is no longer specifically encoded.   The FCodes still include most of the information needed to re-create the hydrography on a USGS Topographic Map, but some detailed information that was shown on the maps with special labels is not available in the FCode and some unique and uncommon features were eliminated.   Many of these features and attributes are better managed locally as events by the NHD data stewards.  Some features and attributes of general value to the NHD community have also been added for maintenance in the national holdings. 

 

Hydro-related features found on USGS Topo Maps that are not captured in the NHD.

Anchorage

Crevasse Field

Fish Ladder

Fumerole

Geyser

Hazard Zone

Mile Marker

Mud Pot

Post

Special Use Zone

Snag/Stump

Wreck

 

Deleted attributes required for some distinct labeling

Dam/Weir – operational status

Gate Type

Hazard Zone Type

Ice Mass Category – continental glaciation - only needed in Antarctica

Inundation Area Type

Reservoir (construction material, cover status and hydrographic category were simplified)

Sea/Ocean Category

Shoreline – positional accuracy

Spring/Seep – water characteristics

Well – water characteristics

Feature Type

FCode

Description

STREAMGAGE

57001

Streamgage Status|Active; Record|Continuous

STREAMGAGE

57002

Streamgage Status|Active; Record|Partial

STREAMGAGE

57003

Streamgage Status|Inactive

WATER QUALITY STATION

57004

feature type only: no attributes

DAM

57100

feature type only: no attributes

FLOW ALTERATION

57201

Flow Alteration|Addition

FLOW ALTERATION

57202

Flow Alteration|Removal

FLOW ALTERATION

57203

Flow Alteration|Unknown

HYDROLOGIC UNIT OUTLET

57300

feature type only: no attributes