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King County NWI Wetlands with LLWW, HGM and Function Attributes

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Summary

King County’s National Wetlands Inventory (NWI) dataset is a localized version of the U.S. Fish and Wildlife Service’s national wetland mapping effort.

These maps were created in 2024 using geospatial methods to show wetland type and extent within King County.

There is no attempt to define the limits of proprietary jurisdiction of any federal, state, or local government, or to establish the geographical scope of the regulatory programs of government agencies.

The purpose of these maps is to support conservation, land-use planning, and environmental management by local agencies, natural resource manager, businesses and property owners.

This wetland mapping project was funded by the King County Water and Land Services, Ecological Restoration and Engineering Services Unit, as part of a Best Available Science update.

Wetlands within the King County boundary were mapped and classified, and reviewed by King County team members and National Wetland Inventory Staff.

Wetlands were mapped and classified using: the National Wetlands Inventory (NWI) classification system (Cowardin et al., 1979) and the Landscape Position, Landform, Water Flow Path, and Water Body Type (LLWW) classification developed for the Western U.S. (Lemly et al.

2018).

The main objective for this project was to improve the knowledge of wetland extent and value within King County.

In all, more than approximately 6,600 square miles of land comprise the county.

King County contracted with Geospatial Services (GSS) at Saint Mary's University of Minnesota to create of high-quality National Wetlands Inventory Plus (NWIPlus) level mapping for the county.

Program staff will conduct some ground truthing of data.

NWIPlus is an enhanced NWI product with hydrogeomorphic-type descriptors that can facilitate predicting wetland functions.

The enhanced attributes describe wetland landform, water flow path and water body type.

The updated mapping will be utilized by developers and landowners to avoid wetland impacts, and may be incorporated into other GIS models whi

Description

The project, entitled “King County Wetland Inventory Update, King County, WA ” used geospatial techniques and image interpretation processes to remotely map and classify wetlands (includes deepwater habitats) and riparian areas in King County, WA.

Wetlands for the project area were mapped and classified using on-screen digitizing methods in a Geographical Information System (GIS).

This process was supported by development of a selective image interpretation key that resulted from field verification of image signatures and wetland classifications.

Wetland image interpretation employed a variety of input image and collateral data sources, as well as field verification techniques.

All mapping was completed at an on-screen scale of 1:5,000 or larger in compliance with national wetland mapping standards.

The primary source imagery for mapping consisted of Eagleview, 2021, one-quarter foot, true-color pictometry.

8-bit, tiled orthophotography in TIFF format published by King County and mosaiced by GSS.

Collateral data used in the mapping process included Light Detection and Ranging (LiDAR) Digital Elevation Model (DEM) 1.5 ft resolution and LiDAR derived products such as hillshade, contours, depth grids, and synthetic flow networks; King County Digital Surface Model Vegetation Height; King County Coho intrinsic potential stream layer; Beaver Intrinsic Potential (BIP); Historic National Wetland Inventory (NWI); National Hydrography Dataset (NHD) springs and watershed boundaries; ESRI basemap.

imagery; and Google Earth Time Slider True Color Imagery (GE); King County wetland layers; King County Stormwater features; King County wetland mitigation sites; King County Habitat Restoration sites; and Wetland Intrinsic Potential (WIP).

All feature creation and attribution were completed with on-screen digitization procedures using ESRI, ArcGIS Pro 3.2.0 with advanced editing too

Layer information

Layer Name	wetlands_nwi_2024_area
Subject Category	Environment
Title	King County NWI Wetlands with LLWW, HGM and Function Attributes
Feature Count	18905
Feature Type	Polygon
Next Update	As needed
Spatial reference	EPSG:2926
Control ID	3017
Place Keywords	Washington State, King County, WA, Pacific NW
Theme Keywords	Enviro, Wetland Mapping, National Wetland Inventory (NWI), LLWW
Supplemental Information	None

Table Preview

Attribute information

OBJECTID From Esri	Description Internal feature number. Domain Sequential unique whole numbers that are automatically generated.
NWI From Classification of Wetlands and Deepwater Habitats of the United States (FWS/OBS – 79/31 December 1979)	Description Full NWI code for (SYSTEM/SUBSYSTEM), substrate or vegetation type (CLASS), vegetation description for EM, SS, or FO (SUBCLASS), length of flooding and/or saturation (WATER_REGIME), and SPECIAL_MODIFIER. For example, the FULL_CLASS value for a wetland with an ATTRIBUTE value of PEM1C is Palustrine, Emergent, Persistent, Seasonally Flooded. Domain Not Found
QAQC_CODE From King County	Description Codes that refer to automated verification tests used to identify records that fail verification. "NNNNNN" stands for "No error." Domain NNNGNN, NNNNLN, NNNNNN
WETLAND_TYPE From Classification of Wetlands and Deepwater Habitats of the United States (FWS/OBS – 79/31 December 1979)	Description Assigned general wetland classification based on the NWI code Domain Estuarine and Marine Deepwater, Estuarine and Marine Wetland, Freshwater Emergent Wetland, Freshwater Forested/Shrub Wetland, Freshwater Pond, Lake, Riverine
ACRES From ESRI	Description Area of the wetland polygon in acres Domain 0.01014117 to 71296.8862748 by
NWI_System From Classification of Wetlands and Deepwater Habitats of the United States (FWS/OBS – 79/31 December 1979)	Description NWI wetland system of the polygon L = Lacustrine P = Palustrine R = Riverine E = Estuarine Domain E, L, P, R
NWI_SystemDesc From Classification of Wetlands and Deepwater Habitats of the United States (FWS/OBS – 79/31 December 1979)	Description NWI wetland system of the polygon Domain Not Found
NWI_Subsystem From Classification of Wetlands and Deepwater Habitats of the United States (FWS/OBS – 79/31 December 1979)	Description Subsystem applies only to Lacustrine, Riverine, and Estuarine systems 1 =Subtidal (Estuarine system only) 2 = Intertidal (Estuarine system only) 1 = Limnetic (Lacustrine system only) 2 = Littoral (Lacustrine system only) 1 =Tidal (Riverine system only) 2 = Lower Perennial (Riverine system only) 3 = Upper Perennial (Riverine system only) 4 = Intermittent (Riverine system only) Domain 1, 2, 3, 4
NWI_SubsystemDesc From Classification of Wetlands and Deepwater Habitats of the United States (FWS/OBS – 79/31 December 1979)	Description Subsystem applies only to Lacustrine, Riverine, and Estuarine systems Domain Not Found
NWI_Class From Classification of Wetlands and Deepwater Habitats of the United States (FWS/OBS – 79/31 December 1979)	Description The dominant life form of the vegetation or the physiography and composition of the substrate. AB = Aquatic bed EM = Emergent vegetation FO = Forested vegetation RB = Rock bottom RS = Rocky shore SB = Streambed SS = Scrub-shub vegetation UB = Unconsolidated bottom US = Unconsolidated shore Domain AB, EM, FO, RB, RS, SB, SS, UB, US
NWI_ClassDesc From Classification of Wetlands and Deepwater Habitats of the United States (FWS/OBS – 79/31 December 1979)	Description The dominant life form of the vegetation or the physiography and composition of the substrate. Domain Not Found
NWI_Class2 From Classification of Wetlands and Deepwater Habitats of the United States (FWS/OBS – 79/31 December 1979)	Description This field contains an additional class if the NWI polygon contains mixed classes. For example the code PSS1/FO5F is mixed secondary scrub and forest. FO is the second class in the polygon. AB = Aquatic bed EM = Emergent vegetation FO = Forested vegetation RB = Rock bottom RS = Rocky shore SB = Streambed SS = Scrub-shub vegetation UB = Unconsolidated bottom US = Unconsolidated shore Domain AB, EM, FO, SS, US
NWI_Class2Desc From Classification of Wetlands and Deepwater Habitats of the United States (FWS/OBS – 79/31 December 1979)	Description This field contains an additional class if the NWI polygon contains mixed classes. Domain Not Found
NWI_SubClass From Classification of Wetlands and Deepwater Habitats of the United States (FWS/OBS – 79/31 December 1979)	Description Subclass description for EM, SS, FO, and US classes in Riverine, Lacustrine, Estuarine and Palustrine systems 1 = Persistent (applies to Estuarine and Palustrine systems with Emergent Vegetation class only) 1 = Broad-leaved deciduous (applies to Palustrine systems with Scrub-shrub and Forested classes only) 3 = Broad-leaved evergreen (applies to Palustrine systems with Scrub-shrub class only) 4 = Needle-leaved evergreen (applies to Palustrine systems with Scrub-shrub and Forested classes only) 5 = Vegetated (applies to Lacustrine and Riverine systems with unconsolidated shore class only) Domain 1, 3, 4, 5
NWI_SubclassDesc From Classification of Wetlands and Deepwater Habitats of the United States (FWS/OBS – 79/31 December 1979)	Description Subclass description for EM, SS, FO, and US classes in Riverine, Lacustrine, Estuarine and Palustrine systems Domain Not Found
NWI_SubClass2 From Classification of Wetlands and Deepwater Habitats of the United States (FWS/OBS – 79/31 December 1979)	Description This field contains an additional subclass if the NWI polygon contains mixed classes. For example the code PSS1/FO5F is mixed secondary scrub and forest. FO5F is the second class in the polygon and 5 is the subclass 2 value. Subclass description applies to EM, SS, FO, and US classes in Riverine, Lacustrine, Estuarine and Palustrine systems 1 = Persistent (applies to Estuarine system with Emergent Vegetation class only) 1 = Broad-leaved deciduous (applies to Palustrine systems with Scrub-shrub and Forested classes only) 4 = Needle-leaved evergreen (applies to Palustrine systems with Scrub-shrub and Forested classes only) 5 = Dead (applies to Palustrine system with Forested class only) Domain 1, 4, 5
NWI_Subclass2Desc From Classification of Wetlands and Deepwater Habitats of the United States (FWS/OBS – 79/31 December 1979)	Description This field contains an additional subclass if the NWI polygon contains mixed classes. Domain Not Found
NWI_Regime From Classification of Wetlands and Deepwater Habitats of the United States (FWS/OBS – 79/31 December 1979)	Description The duration of flooding and/or saturation. A = Temporarily Flooded B = Saturated C = Seasonally Flooded D = Continuously Saturated E = Seasonally Flooded/Saturated F = Semi permanently Flooded G = Intermittently Exposed H = Permanently Flooded J = Intermittently Flooded K = Artificially Flooded L = Subtidal M = Irregularly Exposed N = Regularly Flooded P = Irregularly Flooded Q = Regularly Flooded-Fresh Tidal T = Semipermanently Flooded-Fresh Tidal V = Permanently Flooded-Fresh Tidal Domain A, B, C, D, E, F, G, H, J, K, L, M, N, P, Q, T, V
NWI_RegimeDesc From Classification of Wetlands and Deepwater Habitats of the United States (FWS/OBS – 79/31 December 1979)	Description The duration of flooding and/or saturation. Domain Not Found
NWI_Modifier From Classification of Wetlands and Deepwater Habitats of the United States (FWS/OBS – 79/31 December 1979)	Description Modification of the wetland polygon. b = Beaver d = Partially Drained/Ditched f = Farmed h = Diked/Impounded m = Managed r = Artificial substrate s = Spoil x = Excavated Domain b, d, f, h, h5, x
NWI_ModifierDesc From Classification of Wetlands and Deepwater Habitats of the United States (FWS/OBS – 79/31 December 1979)	Description Modification of the wetland polygon. Domain Not Found
LP From J. Lemly et al. 2018. Keys to LLWW for Inland Wetlands of the Western United States.	Description LLWW code for landscape position which allows characterization of wetlands based on their location in or along a waterbody, in a drainageway, or in relative isolation. ES = Estuarine LE = Lentic LO = Lotic TE = Terrene Domain ES, LE, LO, TE
LandscapePosition From J. Lemly et al. 2018. Keys to LLWW for Inland Wetlands of the Western United States.	Description LLWW code for landscape position which allows characterization of wetlands based on their location in or along a waterbody, in a drainageway, or in relative isolation. Domain Not Found
LF From J. Lemly et al. 2018. Keys to LLWW for Inland Wetlands of the Western United States.	Description LLWW code for landform which defines wetland shape or the shape of the surrounding landscape on which the wetland occurs and is applied to wetlands not designated as waterbodies. BA = Basin FL = Flat FP = Floodplain FR = Fringe SL = Slope Domain BA, FL, FP, FR, SL
Landform From J. Lemly et al. 2018. Keys to LLWW for Inland Wetlands of the Western United States.	Description LLWW code for landform which defines wetland shape or the shape of the surrounding landscape on which the wetland occurs and is applied to wetlands not designated as waterbodies. Domain Not Found
WB From J. Lemly et al. 2018. Keys to LLWW for Inland Wetlands of the Western United States.	Description LLWW code for waterbody type EY = Estuary LK = Lake PD = Pond R1 = Perennial River R5 = Tidal River S1 = Perennial Stream S2 = Unknown Stream S5 = Tidal Stream Domain EY, LK, PD, R1, R5, S1, S2, S5
WaterbodyType From J. Lemly et al. 2018. Keys to LLWW for Inland Wetlands of the Western United States.	Description LLWW code for waterbody type Domain Not Found
WF From J. Lemly et al. 2018. Keys to LLWW for Inland Wetlands of the Western United States.	Description LLWW code defining the predominant direction of waterflow supporting the wetland. BI = Bidirectional nontidal BT = Bidirectional tidal IN = Inflow OU = Outflow TB = Bidirectional nontidal/throughflow TH = Throughflow VR = Vertical flow Domain BI, BT, IN, OU, TB, TH, VR
WaterFlowPath From J. Lemly et al. 2018. Keys to LLWW for Inland Wetlands of the Western United States.	Description LLWW code defining the predominant direction of waterflow supporting the wetland. Domain Not Found
MOD1 From J. Lemly et al. 2018. Keys to LLWW for Inland Wetlands of the Western United States.	Description Parsed LLWW modifier code. ag = agriculture wetland ar = artificial flow bv = beaver influenced dr = partly drained ds = discharge to stream ex = excavated fn = fen gf = geomorphic floodplain gw = groundwater driven hw = headwater il = island im = impounded it = intermittent pd = pond sf = spring-fed Domain ag, bv, dr, ds, ex, gf, gw, hw, il, im, pd
Modifier1 From J. Lemly et al. 2018. Keys to LLWW for Inland Wetlands of the Western United States.	Description Parsed LLWW modifier code. Domain Not Found
MOD2 From J. Lemly et al. 2018. Keys to LLWW for Inland Wetlands of the Western United States.	Description Parsed LLWW modifier code. ag = agriculture wetland ar = artificial flow bv = beaver influenced dr = partly drained ds = discharge to stream ex = excavated fn = fen gf = geomorphic floodplain gw = groundwater driven hw = headwater il = island im = impounded it = intermittent pd = pond sf = spring-fed Domain ag, ar, dr, ds, ex, fn, gf, gw, hw, im, it, pd, sf
Modifier2 From J. Lemly et al. 2018. Keys to LLWW for Inland Wetlands of the Western United States.	Description Parsed LLWW modifier code. Domain Not Found
MOD3 From J. Lemly et al. 2018. Keys to LLWW for Inland Wetlands of the Western United States.	Description Parsed LLWW modifier code. ag = agriculture wetland ar = artificial flow bv = beaver influenced dr = partly drained ds = discharge to stream ex = excavated fn = fen gf = geomorphic floodplain gw = groundwater driven hw = headwater il = island im = impounded it = intermittent pd = pond sf = spring-fed Domain ag, ar, dr, ds, fn, gf, gw, hw, it, sf
Modifier3 From J. Lemly et al. 2018. Keys to LLWW for Inland Wetlands of the Western United States.	Description Parsed LLWW modifier code. Domain Not Found
MOD4 From J. Lemly et al. 2018. Keys to LLWW for Inland Wetlands of the Western United States.	Description Parsed LLWW modifier code. ag = agriculture wetland ar = artificial flow bv = beaver influenced dr = partly drained ds = discharge to stream ex = excavated fn = fen gf = geomorphic floodplain gw = groundwater driven hw = headwater il = island im = impounded it = intermittent pd = pond sf = spring-fed Domain ar, ch, ds, fn, gw, hw, it, sf
Modifier4 From J. Lemly et al. 2018. Keys to LLWW for Inland Wetlands of the Western United States.	Description Parsed LLWW modifier code. Domain Not Found
MOD5 From J. Lemly et al. 2018. Keys to LLWW for Inland Wetlands of the Western United States.	Description Parsed LLWW modifier code. ag = agriculture wetland ar = artificial flow bv = beaver influenced dr = partly drained ds = discharge to stream ex = excavated fn = fen gf = geomorphic floodplain gw = groundwater driven hw = headwater il = island im = impounded it = intermittent pd = pond sf = spring-fed Domain ch, ds, fn, hw
Modifier5 From J. Lemly et al. 2018. Keys to LLWW for Inland Wetlands of the Western United States.	Description Parsed LLWW modifier code. Domain Not Found
MOD6 From J. Lemly et al. 2018. Keys to LLWW for Inland Wetlands of the Western United States.	Description Parsed LLWW modifier code. ag = agriculture wetland ar = artificial flow bv = beaver influenced dr = partly drained ds = discharge to stream ex = excavated fn = fen gf = geomorphic floodplain gw = groundwater driven hw = headwater il = island im = impounded it = intermittent pd = pond sf = spring-fed Domain ch, ds
Modifier6 From J. Lemly et al. 2018. Keys to LLWW for Inland Wetlands of the Western United States.	Description Parsed LLWW modifier code. Domain Not Found
ALLMOD From J. Lemly et al. 2018. Keys to LLWW for Inland Wetlands of the Western United States.	Description All LLWW modifier codes concatenated together. Domain Not Found
AllModifiersDesc From J. Lemly et al. 2018. Keys to LLWW for Inland Wetlands of the Western United States.	Description All LLWW modifier codes concatenated together. Domain Not Found
LLWW6 From J. Lemly et al. 2018. Keys to LLWW for Inland Wetlands of the Western United States.	Description LLWW base codes combined together (Landscape Position , Waterbody Type or Landform, and Waterflow Path). Modifiers are omitted from the codes. Domain ESEYBT, ESFRBT, LEBABI, LEBAOU, LEBATB, LEFPBI, LEFPTB, LEFRBI, LEFROU, LEFRTB, LEFRVR, LEPDBI, LEPDTB, LOBAOU, LOBATH, LOBAVR, LOFPOU, LOFPTH, LOFPVR, LOFRBT, LOFRTH, LOLKOU, LOLKTB, LOPDTH, LOPDVR, LOR1BT, LOR1TH, LOR5TH, LOS1BT, LOS1OU, LOS1TH, LOS2TH, LOS5BT, LOS5OU, LOS5TH, TEBAIN, TEBAOU, TEBAVR, TEFLOU, TEFLVR, TEFROU, TEFRVR, TELKIN, TELKOU, TELKVR, TEPDIN, TEPDOU, TEPDVR, TESLOU, TESLVR
LLWW From J. Lemly et al. 2018. Keys to LLWW for Inland Wetlands of the Western United States.	Description Full LLWW code which includes the base codes and all assigned modifiers. Domain Not Found
HGMClass From A Hydrogeomorphic Classification for Wetlands. Mark M. Brinson, 1993.	Description Hydrogeomorphic classification of the polygon. Domain Depressional, Estuarine, Flats, Lacustrine Fringe, Riverine, Slope
CAR From Geospatial Services, Saint Mary's University of Minnesota	Description Contains the modeling results for functional rating of wetland polygons for the Carbon Sequestration function. Rating is based on a combination of LLWW and NWI SQL attribute queries, and spatial selections. High rated wetland polygons for this function are: Marine or Estuarine Aquatic Bed or Unconsolidated Bottom; Estuarine vegetated wetlands; Palustrine Tidal vegetated wetlands seasonally or semi-permanently flooded-fresh tidal; Palustrine vegetated wetlands that are Semi-permanently flooded; Palustrine vegetated wetlands that are Intermittently Exposed or Permanently flooded; Palustrine vegetated wetlands that are Seasonally flooded; Palustrine Saturated wetlands with acidic water quality; Palustrine wetlands on organic soils; Riverine Emergent wetlands that are Seasonally or Semi-permanently flooded; Lacustrine Littoral Emergent wetlands that are Seasonally or Semi-permanently flooded; Lacustrine Littoral Aquatic Bed wetlands that are Semi-permanently or Permanently flooded or Intermittently exposed; Riverine Aquatic Bed wetlands that are Semi-permanently or Permanently flooded or Intermittently exposed; Palustrine Aquatic Bed wetlands that are Intermittently exposed; Palustrine emergent wetlands that are continuously or seasonally saturated; NOTE: Exclude Intermittently flooded wetlands and algal beds (AB1) from High Moderate rated wetland polygons for this function are: Marine or Estuarine Unconsolidated Shore or Stream Bed wetlands; Palustrine Tidal wetlands temporarily flooded-fresh tidal; Palustrine vegetated wetlands that are Temporarily flooded or Saturated; Riverine or Lacustrine Littoral Emergent wetlands that are Temporarily flooded; Palustrine Unconsolidated Bottom wetlands (and mixes; excluding aquaculture, commercial, industrial, residential-stormwater, and sewage treatment ponds and any isolated impoundments); Palustrine wetlands with Unconsolidated Shore/vegetation mixes; Lacustrine Littoral wetlands with Unconsolidated Shore/vegetation mixes; Beaver wetlands; NOTE: Exclude Intermittently flooded and farmed wetlands from Moderate Domain High, Moderate
AMPH From Geospatial Services, Saint Mary's University of Minnesota	Description Contains the modeling results for functional rating of wetland polygons for the Amphibian Turtle function. Rating is based on a combination of LLWW and NWI SQL attribute queries, and spatial selections. This field is named AT in the NWI but changed in our data due to AT being a reserved word. High rated wetland polygons for this function are: Lacustrine Limnetic wetlands; Lacustrine Littoral semi-permanently, intermittently flooded, or permanently flooded wetlands; Lentic semi-permanently flooded or intermittently exposed vegetated wetlands; Palustrine wetlands with a permanently flooded or intermittently exposed water regime and having emergent, dead scrub-shrub, dead forest vegetation or an unconsolidated bottom; Riverine Lower Perennial aquatic bed or emergent wetlands; Riverine Lower Perennial permanently flooded wetlands; River or Streams with semi-permanently flooded, intermittently exposed, or permanently flooded water regimes; Other lakes and ponds; Palustrine Forested or Palustrine Scrub-Shrub wetlands adjacent to Palustrine Emergent semi-permanently flooded, intermittently exposed, or permanently flooded wetlands; Palustrine wetlands with dead woody vegetation that are semi-permanently flooded, intermittently exposed, or permanently flooded; Lentic or Lotic Fringe Palustrine Forested wetlands; Palustrine Forested wetlands associated with other ponds; Wetlands with organic soils; Riverine Intermittent Stream Bed seasonally flooded reaches with beaver wetlands or adjacent vegetated wetlands that are seasonally flooded or wetter. Moderate rated wetland polygons for this function are: Lentic or Lotic Palustrine Emergent wetlands with seasonally or wetter water regimes contiguous with a waterbody; Pond Fringe wetlands; Lentic or Lotic Fringe vegetated wetlands that are seasonally flooded or wetter, Lacustrine Littoral seasonally flooded or semi-permanently flooded wetlands with aquatic bed or emergent vegetation; Other river or streams that are seasonally flooded; All other ponds not selected as “High”. NOTE Exclude J, A, B, D, E and K regimes from High and Moderate Domain High, Moderate
BSS From Geospatial Services, Saint Mary's University of Minnesota	Description Contains the modeling results for functional rating of wetland polygons for the Bank and Shoreline Stabilization function. Rating is based on a combination of LLWW and NWI SQL attribute queries, and spatial selections. High rated wetland polygons for this function are: Estuarine vegetated wetlands (excluding island landforms); Marine or Estuarine Rocky Shore (excluding island landforms); Estuarine Unconsolidated Shore irregularly flooded wetlands; Lotic or Lentic vegetated wetlands (excluding floating mats and island wetlands) and mixes connected to a waterbody; Riverine or Lacustrine Littoral Rocky Shore wetlands. Moderate rated wetland polygons for this function are: Other Estuarine Unconsolidated Shore wetlands (excluding island landforms and irregularly flooded); Marine Unconsolidated Shore wetlands; Other Lotic or Lentic vegetated wetlands (excluding floating mats and island wetlands) and mixes; Terrene vegetated wetlands that are associated with ponds or are headwater outflow wetlands (excluding islands). Domain High, Moderate
FH From Geospatial Services, Saint Mary's University of Minnesota	Description Contains the modeling results for functional rating of wetland polygons for the Fish Habitat function. Rating is based on a combination of LLWW and NWI SQL attribute queries, and spatial selections. High rated wetland polygons for this function are: Marine or Estuarine waterbodies; Riverine Tidal wetlands (excluding temporarily flooded-fresh tidal); Estuarine Emergent wetlands; Marine or Estuarine Unconsolidated Shore or Rocky Shore (excluding irregularly flooded); Lotic Palustrine Tidal Emergent wetlands (excluding temporarily flooded-fresh tidal); Lacustrine Limnetic wetlands; Lacustrine Littoral semi-permanently flooded, intermittently exposed, or permanently flooded wetlands; Lacustrine Littoral Aquatic Beds; Lacustrine Littoral Unconsolidated Bottom/Vegetated wetlands; Lentic semi-permanently flooded or intermittently exposed vegetated wetlands; Lotic Palustrine Aquatic Bed wetlands (excluding excavated or impounded); Palustrine Unconsolidated Bottom/Vegetated wetlands; Palustrine vegetated intermittently exposed or permanently flooded wetlands; Lower and Upper Perennial aquatic bed or emergent wetlands; Lower and Upper Perennial permanently flooded wetlands; Riverine Intermittent Stream Bed seasonally flooded reaches with beaver wetlands or adjacent to beaver wetlands; Palustrine semi-permanently flooded wetlands contiguous with a waterbody (excluding intermittent streams and dammed/impounded ponds); Ponds (excluding man-made impounded or excavated ponds not designed specifically for aquaculture or fisheries/wildlife management) associated with semi-permanently flooded or permanently flooded vegetated wetlands; Riverine wetlands that are seasonally flooded or wetter and are associated with a perennial stream reach (association is based on adjacency to perennial flow network derived from wetland mapping or within 25 m of perennial stream as delineated by NHD). Moderate rated wetland polygons for this function are: Estuarine Scrub-Shrub or Forested wetlands; Lotic Palustrine Tidal Scrub-Shrub or Forested wetlands (excluding temporarily flooded-fresh tidal); Lotic Palustrine Tidal Emergent temporarily flooded-fresh tidal wetlands; Lentic or Lotic Palustrine Emergent wetlands with seasonally or semi-permanently flooded water regimes contiguous with a waterbody; Riverine Intermittent Stream Bed seasonally flooded or wetter reaches adjacent to vegetated wetlands that are seasonally flooded or wetter; Ponds (minimum 1 acre in size; exclude man-made impounded or excavated ponds not designed specifically for aquaculture or fisheries/wildlife management) and associated Fringe wetlands; Palustrine aquatic bed wetlands that are part of impounded or excavated pond and are larger than 1 acre, but are not associated with wastewater ponds/lagoons; Lotic Basin wetlands; Impounded or excavated ponds with wetter water regimes in the LO landscape position. Domain High, Moderate
AIH From Geospatial Services, Saint Mary's University of Minnesota	Description Contains the modeling results for functional rating of wetland polygons for the Aquatic Invertebrate Habitat function. Rating is based on a combination of LLWW and NWI SQL attribute queries, and spatial selections. High rated wetland polygons for this function are: Marine or Estuarine waterbodies; Riverine Tidal wetlands (excluding temporarily flooded-fresh tidal); Estuarine Emergent wetlands; Marine or Estuarine Unconsolidated Shore or Rocky Shore wetlands (excluding irregularly flooded); Lotic Palustrine Tidal Emergent wetlands (excluding temporarily flooded-fresh tidal); Lacustrine Limnetic and Littoral wetlands; Lacustrine Littoral Aquatic Bed wetlands; Lacustrine Littoral Unconsolidated Bottom/Vegetated wetlands; Lentic semi-permanently flooded or intermittently exposed vegetated wetlands; Palustrine Aquatic Bed wetlands (excluding excavated or impounded); Palustrine Unconsolidated Bottom/Vegetated wetlands; Palustrine wetlands with a permanently flooded or intermittently exposed water regime and having emergent, dead scrub-shrub, dead forest vegetation or an unconsolidated bottom; Riverine Lower Perennial aquatic bed or emergent wetlands; Riverine Lower Perennial permanently flooded wetlands; River or Streams with semi-permanently flooded, intermittently exposed, or permanently flooded water regimes; Riverine Intermittent Stream Bed seasonally flooded reaches with beaver wetlands or adjacent vegetated wetlands that are seasonally flooded or wetter; Palustrine semi-permanently flooded wetlands contiguous with a waterbody (excluding intermittent streams and dammed/impounded ponds); Ponds (natural or beaver ponds only, exclude all dammed/impounded unless used for cranberry, aquaculture or wildlife management) associated with semi-permanently flooded vegetated wetlands; Ponds (natural or beaver ponds only, exclude all dammed/impounded unless used for cranberry, aquaculture or wildlife management) associated with permanently flooded wetlands with aquatic bed, emergent or dead scrub-shrub or forested vegetation. Moderate rated wetland polygons for this function are: Estuarine Scrub-Shrub or Forested wetlands; Marine or Estuarine Unconsolidated Shore or Rocky Shore irregularly flooded wetlands; Lotic Palustrine Tidal Scrub-Shrub or Forested wetlands (excluding temporarily flooded-fresh tidal); Lotic Palustrine Tidal Emergent temporarily flooded-fresh tidal wetlands; Lentic or Lotic Palustrine Emergent wetlands with seasonally or semi-permanently flooded water regimes contiguous with a waterbody; Other ponds and associated Fringe wetlands; Dammed/impounded or excavated Palustrine Aquatic Bed wetlands; Lotic basins; Palustrine Unconsolidated Shore or Lacustrine Littoral Unconsolidated Shore seasonally flooded wetlands; All seasonally flooded rivers or streams. Domain High, Moderate
SR From Geospatial Services, Saint Mary's University of Minnesota	Description Contains the modeling results for functional rating of wetland polygons for the Sediment Retention function. Rating is based on a combination of LLWW and NWI SQL attribute queries, and spatial selections. High rated wetland polygons for this function are: Marine or Estuarine waterbodies (excluding Stream Bed); Estuarine vegetated wetlands; Lentic Fringe vegetated wetlands; Lentic Island vegetated wetlands; Lotic Basin wetlands; Lotic Floodplain wetlands; Lotic Fringe vegetated wetlands (exclude floating mats); Lotic Island vegetated wetlands (exclude floating mats); Throughflow Ponds and Lakes and associated vegetated wetlands; Terrene Throughflow Basin wetlands; Stormwater treatment ponds; Beaver wetlands. Moderate rated wetland polygons for this function are: Lentic Fringe non-vegetated wetlands; Lentic Floodplain and Lentic Basin wetlands; Lotic Fringe non-vegetated wetlands (included island wetlands); Marine or Estuarine Unconsolidated Shore or Stream Bed; Riverine Tidal Unconsolidated Shore; Other Terrene Basins (unless Palustrine Saturated wetland); Other Ponds and Lakes and associated wetlands not already assigned as High (excluding commercial, industrial, sewage treatment, mining and sloped wetlands); Terrene wetlands associated with ponds (excluding Palustrine Saturated wetlands);Terrene wetlands within the geomorphic floodplain; Terrene Flat (excluding Palustrine Temporarily flooded or Saturated) wetlands; Terrene wetlands associated with ponds that have either Outflow or Inflow; Palustrine, Lacustrine Littoral, or Riverine wetlands that are Intermittently flooded. NOTE: Exclude Intermittent Riverine Streambed wetlands that are Intermittently flooded (arroyos) since they contribute sediments. Also exclude all Saturated wetlands. Domain High, Moderate
SM From Geospatial Services, Saint Mary's University of Minnesota	Description Contains the modeling results for functional rating of wetland polygons for the Streamflow Maintenance function. Rating is based on a combination of LLWW and NWI SQL attribute queries, and spatial selections. High rated wetland polygons for this function are: Unaltered headwater wetlands or wetlands that are associated with areas of groundwater discharge; Lotic Floodplain or Lotic Basin wetlands, Terrene Basin and Slope Outflow wetlands that discharge directly to a stream (excluding impounded or ditched wetlands). Moderate rated wetland polygons for this function are: Altered headwater wetlands or wetlands that are associated with areas of groundwater discharge; Terrene Basin and Slope Throughflow wetlands that discharge directly to a stream (excluding impounded or ditched wetlands). Domain High, Moderate
SWD From Geospatial Services, Saint Mary's University of Minnesota	Description Contains the modeling results for functional rating of wetland polygons for the Surface Water Detention function. Rating is based on a combination of LLWW and NWI SQL attribute queries, and spatial selections. High rated wetland polygons for this function are: Marine or Estuarine wetlands (excluding irregularly flooded); Lotic Lakes; Lotic Basin wetlands (excluding those associated with an intermittent stream unless the stream is seasonally flooded); Lentic Basin wetlands (excluding those associated with shallow excavated lakes or artificial lakes or wetlands with a K regime unless in a reservoir or dammed lake); Lentic Fringe wetlands (excluding those associated with shallow excavated lakes or artificial lakes or wetlands with a K regime unless in a reservoir or dammed lake); Lentic Floodplain wetlands associated with reservoirs and flood control dams; Wetlands formed along the margin of an island within a lake (excluding K water regimes); Lotic Fringe wetlands; Wetlands formed along the shore of an island within a stream or river channel; Ponds Throughflow (in-stream) and associated Fringe and Basin wetlands; Terrene Throughflow Lakes and Basin wetlands; Storm water treatment ponds, Stock dams, or Beaver ponds. NOTE: Unless otherwise noted no Temporarily flooded, Saturated or Intermittently flooded wetlands. Additionally all Palustrine Emergent Saturated wetlands on organic soils are also excluded. Moderate rated wetland polygons for this function are: Marine or Estuarine irregularly flooded wetlands; Seasonally flooded emergent wetlands (with standing vegetation) formed behind water flow structures that are along intermittent streams ; Lotic Floodplain wetlands (including those associated with intermittent streams); Lotic Fringe wetlands (other than previously selected); Lotic Basin wetlands associated with intermittent streams; Lentic Floodplain wetlands associated with deep water natural lakes and Lentic Fringe and Basin wetlands; Wetlands formed along the margin of an island within a lake (other than previously selected, excluding shallow excavated lakes or artificial lakes); Terrene Lakes and Basin wetlands (other than previously selected; excluding isolated impounded); Other Ponds (excluding sewage treatment and isolated impoundments) Terrene wetlands associated with ponds (excluding slope wetlands); Terrene Flat wetlands; Seasonally saturated wetlands. Domain High, Moderate
WBIRD From Geospatial Services, Saint Mary's University of Minnesota	Description Contains the modeling results for functional rating of wetland polygons for the Waterfowl and Water Bird Habitat function. Rating is based on a combination of LLWW and NWI SQL attribute queries, and spatial selections. High rated wetland polygons for this function are: Marine or Estuarine waterbodies; Estuarine Emergent wetlands; Marine or Estuarine Unconsolidated Shore or Rocky Shore (excluding irregularly flooded); Palustrine Tidal wetlands semi-permanently flooded-fresh tidal; Palustrine Tidal Emergent wetlands seasonally flooded fresh-tidal; Riverine Tidal (excluding temporarily flooded-fresh tidal); Lotic Palustrine Tidal Scrub-Shrub or Forested wetlands seasonally flooded fresh-tidal and contiguous with Marine or Estuarine waterbodies; Lacustrine Semi-permanently Flooded wetlands; Lacustrine Limnetic wetlands; Lacustrine Littoral Aquatic Bed; Lacustrine Unconsolidated Shore wetlands that are seasonally flooded or seasonally flooded/saturated; Lacustrine Littoral Unconsolidated Bottom wetlands that are semi-permanently flooded; Lacustrine Littoral Vegetated wetlands that are permanently flooded; Palustrine Vegetated wetlands that are permanently flooded; Other Palustrine vegetated wetlands that are semi-permanently flooded; Seasonally Flooded Palustrine wetlands impounded (all vegetation types and associated PUB waters – natural ponds, waterfowl/wildlife impoundments, and beaver ponds); Lotic River or Stream (excluding intermittent) wetlands that are Seasonally Flooded wetlands with Persistent Emergent Vegetation (including mixtures with Scrub-Shrub or Forested wetlands); Terrene Persistent Emergent Vegetation Seasonally Flooded wetlands associated with ponds; Waterfowl and wildlife management areas; Lentic wetlands that are Seasonally Flooded wetlands with Persistent Emergent Vegetation; Wildlife management ponds and wetlands associated with beaver activity; Riverine Emergent Wetlands that are Semi-permanently Flooded; Lentic Basin, Fringe, and Floodplain wetlands associated with Ponds; Terrene Headwater Seasonally Flooded wetlands with Persistent Emergent Vegetation; Palustrine Semi-permanently flooded wetlands adjacent to a perennial waterbody; Palustrine Aquatic Bed (not excavated or impounded, except those associated with wildlife impoundment); Ponds associated with Semi-permanently Flooded, Intermittently Exposed or Permanently Flooded Vegetated wetlands. Moderate rated wetland polygons for this function are: Marine or Estuarine Unconsolidated Shore or Rocky Shore irregularly flooded; Estuarine Scrub-Shrub/Emergent wetlands; Lotic Palustrine Tidal Scrub-Shrub or Forested wetlands seasonally flooded-fresh tidal; Palustrine Tidal Emergent wetlands temporarily flooded-fresh tidal; Riverine Tidal temporarily flooded-fresh tidal; Lower Perennial Riverine Permanently Flooded wetlands; Other Lacustrine Littoral Unconsolidated Bottom wetlands (not listed in High); Ponds 1 acre or greater in size (excluding industrial, commercial, stormwater detention, wastewater treatment, and similar ponds); Palustrine Aquatic Bed that are excavated or impounded and >1 acre; Intermittent Lotic Stream wetlands with Persistent Emergent Vegetation that are Seasonally Flooded and > 1 acre; Palustrine Emergent wetlands (including mixtures with Scrub-shrub) that are Seasonally Flooded and associated with permanently flooded waterbodies; Palustrine Semi-permanently flooded wetlands adjacent to an intermittent waterbody. Domain High, Moderate
SBH From Geospatial Services, Saint Mary's University of Minnesota	Description Contains the modeling results for functional rating of wetland polygons for the Shorebird Habitat function. Rating is based on a combination of LLWW and NWI SQL attribute queries, and spatial selections. High rated wetland polygons for this function are: Marine or Estuarine Unconsolidated Shore or Rocky Shore or Stream Bed wetlands; Palustrine Unconsolidated Shore temporarily flooded or seasonally flooded wetlands; Lacustrine Littoral Unconsolidated Shore temporarily flooded or seasonally flooded wetlands; Riverine Lower Perennial Unconsolidated Shore temporarily flooded or seasonally flooded wetlands. Moderate rated wetland polygons for this function are: Lacustrine Littoral Unconsolidated Bottom semi-permanently flooded or intermittently exposed wetlands; Palustrine Unconsolidated Bottom semi-permanently flooded or intermittently exposed wetlands. Domain High, Moderate
Shape From Esri	Description Feature geometry. Domain Coordinates defining the features.
Wetland From King County	Description Distinguishes if a feature is a wetland. Domain Not Found
AssetID From King County	Description AssetID is a unique numeric identifier within a feature class. It is used to create the DBAssetID. Users should not modify the AssetID. Domain Not Found
WRIA From King County	Description The Water Resource Inventory Area basin that the feature's center point resides within. Domain Not Found
DBAssetID From King County	Description DBAssetID is a unique identifier that is tied to Cityworks, Roadworks, Lucity, and other databases. The DBAssetID is unique for each feature class and includes a unique prefix followed by the AssetID number. Domain Not Found
Shape.STArea() From ESRI	Description ST_Area returns the area of a polygon or multipolygon. Domain Not Found
Shape.STLength() From ESRI	Description ST_Area returns the length of a feature. Domain Not Found

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Maintained by	DNRP - Water and Land Resources
Primary	Harkeerat Kang Harkeerat.Kang@kingcounty.gov

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