DNR Forest Practices Wetland Layer

Data format: Personal GeoDatabase Feature Class

File or table name: WET

Coordinate system: Lambert Conformal Conic

Theme keywords: inlandWaters, wetlands, vegetation, soils, hydrology, hydrography

Abstract: The DNR Forest Practices Wetlands Geographic Information System (GIS) Layer is based on the National Wetlands Inventory (NWI). In cooperation with the Washington State Department of Ecology, DNR Forest Practices developed a systematic reclassification of the original USFWS wetlands codes into WAC 222-16-035 types. The reclassification was done in 1995 according to the Forest Practice Rules in place at the time. The WAC's for defining wetlands are 222-16-035 and 222-16-050.

FGDC and ESRI Metadata:

Metadata elements shown with blue text are defined in the Federal Geographic Data Committee's (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM). Elements shown with green text are defined in the ESRI Profile of the CSDGM. Elements shown with a green asterisk (*) will be automatically updated by ArcCatalog. ArcCatalog adds hints indicating which FGDC elements are mandatory; these are shown with gray text.

Identification Information:


Citation:
Citation information:
Originators: Washington State Department of Natural Resources, Forest Practices Division reselect of USFWS National Wetlands Inventory (NWI) data


Title:
DNR Forest Practices Wetland Layer
*File or table name: WET


Publication date: c. 1995
*Geospatial data presentation form: vector digital data


*Online linkage: \\Snarf\am\metacreate\MetadataPGDBv9.mdb


Description:
Abstract:
The DNR Forest Practices Wetlands Geographic Information System (GIS) Layer is based on the National Wetlands Inventory (NWI). In cooperation with the Washington State Department of Ecology, DNR Forest Practices developed a systematic reclassification of the original USFWS wetlands codes into WAC 222-16-035 types. The reclassification was done in 1995 according to the Forest Practice Rules in place at the time. The WAC's for defining wetlands are 222-16-035 and 222-16-050.

Purpose:
It is intended that these data be only a first step in determining whether or not wetland issues have been or need to be addressed in an area. The DNR Forest Practices Division and the Department of Ecology strongly supports the additional use of hydric soils (from the GIS soils layer) to add weight to the call of  'wetland'. Reports from the Department of Ecology indicate that these data may substantially underestimate the extent of forested wetlands.  Various studies show the NWI data is 25-80% accurate in forested areas.  Most of these data were collected from stereopaired aerial photos at a scale of 1:58,000.  The stated accuracy is that of a 1:24,000 map, or plus or minus 40 feet. In addition, some parts of the state have data that are 30 years old and only a small percentage have been field checked. Thus, for regulatory purposes, the user should not rely solely on these data. On-the-ground checking must accompany any regulatory call based on these data.

Supplemental information:
The reclassification is based on the USFWS FWS_CODE. The FWS_CODE is a concatenation of three subcomponents:  Wetland system, class, and water regime. Forest Practices further divided the components into system, subsystem, class, subclass, water regime, special modifiers, xclass, subxclass, and xsystem.  The last three items (xsomething) are for wetland areas which do not easily lend themselves to one class alone. The resulting classification system uses two fields: WLND_CLASS and WLND_TYPE. WLND_CLASS indicates whether the polygon is a forested wetland (F), open water (O), or a vegetated wetland (W).  WLND_TYPE, indicates whether the wetland is a type A (1), type B (2), or a generic wetland (3) that doesn't fit the categories for A or B type wetlands. WLND_TYPE = 0 (zero) is used where WLND_CLASS = O (letter "O"). 

The wetland polygon is classified as F, forested wetland; O, open water; or W, vegetated wetland depending on the following FWS_CODE categories:

     F                        O                      W
---------------------------------------------------------------
Forested              Open              Vegetated
Wetland              Water              Wetland
---------------------------------------------------------------
PFO*                   POW                 PUB5
E2FO                   PRB*                 PML2
                          PUB1-4              PEM*
                          PAB*                 L2US5
                          PUS1-4              L2EM2
                          PFL*                 PSS*
                          L1RB*                PML1
                          L1UB*			
                          L1AB*
                          L1OW
                          L2RB*
                          L2UB*
                          L2AB*
                          L2RS*
                          L2US1-4
                          L2OW

-------------------------------------------------------------------------
* indicates inclusion of the subcategory (ie. PEM* includes PEM1F, PEM1FB, etc.).

DNR FOREST PRACTICES WETLANDS DATASET ON FPARS Internet Mapping Website:
The FPARS Resource Map and Water Type Map display Forested, Type A, Type B, and "other" wetlands. Open water polygons are not displayed on the FPARS Resource Map and Water Type Map in an attempt to minimize clutter.

The following code combinations are found in the DNR Forest Practices wetlands dataset:

WLND_CLASS    WLND_TYPE          wetland polygon classification
        F                  3                     Forested wetland as defined in WAC 222-16-035
        O                  0                     *NWI open water (not displayed on FPARS Resource or Water Type Maps)
        W                 1                     Type A Wetland as defined in WAC 222-16-035
        W                 2                     Type B Wetland as defined in WAC 222-16-035
        W                 3                     other wetland

* NWI open water polygons are indicated by WLND_CLASS = O and WLND_TYPE = 0. Open water is used in the USFWS and WAC 222-16-035 classification system. These open water polygons are not included in the FPARS Resource Map and Water Type Map views of this dataset in an attempt to minimize clutter on the FPARS maps.

*Language of dataset: en


Time period of content:
Time period information:
Single date/time:
Calendar date: c.1995

Currentness reference:
publication date

Status:
Progress: Complete
Maintenance and update frequency: None planned

Spatial domain:
Bounding coordinates:
*West bounding coordinate: -124.787084
*East bounding coordinate: -116.680219
*North bounding coordinate: 49.050355
*South bounding coordinate: 45.431617

Local bounding coordinates:
*Left bounding coordinate: 610387.000000
*Right bounding coordinate: 2557984.000000
*Top bounding coordinate: 1355966.000000
*Bottom bounding coordinate: 62052.000000

Keywords:
Theme:
Theme keywords: inlandWaters
Theme keyword thesaurus: ISO 19115 Appendix A

Theme:
Theme keywords: wetlands, vegetation, soils, hydrology, hydrography
Theme keyword thesaurus: none

Place:
Place keywords: Washington, Washington State, Pacific Northwest

Access constraints: There are no access constraints on these data.
Use constraints:
See DNR Agency Data License Agreement at: http://www.dnr.wa.gov/dataandmaps/nfoaov12-09-03.html
The user must be aware of the limitations of these data. It is intended that these data be only a first step in determining whether or not wetland issues have been or need to be addressed in an area. The DNR Forest Practices Division and the Department of Ecology strongly supports the additional use of hydric soils (from the GIS soils layer) to add weight to the call of  'wetland'. Reports from the Department of Ecology indicate that these data may substantially underestimate the extent of forested wetlands.  Various studies show the NWI data is 25-80% accurate in forested areas.  Most of these data were collected from stereopaired aerial photos at a scale of 1:58,000.  The stated accuracy is that of a 1:24,000 map, or plus or minus 40 feet. In addition, some parts of the state have data that are 30 years old and only a small percentage have been field checked. Thus, for regulatory purposes, the user should not rely solely on these data. On-the-ground checking must accompany any regulatory call based on these data.

Point of contact:
Contact information:
Contact person primary:
Contact person: Mac McKay
Contact organization: Washington State Department of Natural Resources, Forest Practices Division
Contact position: Hydrography and Transportation Data Steward


Contact address:
Address type: mailing and physical address
Address:
1111 Washington St SE
Address:
PO Box 47012
City: Olympia
State or province: WA
Postal code: 98504-7012
Country: USA

Contact voice telephone: 360-902-1453
Contact facsimile telephone: 360-902-1428


Contact electronic mail address: mac.mckay@dnr.wa.gov


Data set credit:
This is a reselect of NWI data by Laura Vaugeois, DNR Forest Practices Division, c. 1995

*Native dataset format: Personal GeoDatabase Feature Class
*Native data set environment:
Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 1; ESRI ArcCatalog 9.1.0.722


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Data Quality Information:


Logical consistency report:
The Forest Practices wetlands GIS data layer has passed initial testing in a subset of DNR Regions, conducted by field foresters. The field verification concluded that:

(1) A high percentage of the wetlands depicted, especially larger wetlands, do exist on the ground; 

2) The lumping of NWI codes into categories fitting the wetland typing system in WAC 222-16-035 is largely accurate. 

The Forest Practices wetlands layer was determined to be of sufficient quality to be included in the Risk Assessment mapping system, an internal mapping program used by DNR Forest Practices staff to review Forest Practice Applications (FPA).  This layer is also currently included in the new Risk Assessment ArcIMS site, a  internal DNR mapping tool that replaced the paper risk assessment mapping system. 

Problems with the dataset include:

(1) The extent of forested wetlands may be substantially underestimated. Various studies show the NWI data are 25-80% accurate in forested areas. 

(2) Some parts of the state use data layers that were developed using rudimentary techniques and have not been updated significantly in 30 years. Many of these techniques have since been refined.

(3) Bogs, a Type A wetland with additional restrictions on road construction and timber harvest, are not depicted as separate from other Type A or forested wetlands.

The Forest Practices wetlands layer is considered appropriate for use as a first step in determining whether or not wetland issues need to be evaluated in an area.  Field checking is essential; no regulatory decision should be based solely on these data.

Positional accuracy:
Horizontal positional accuracy:
Horizontal positional accuracy report:
Reports of positional errors have not been investigated or resolved as of December 2007.

Lineage:
Source information:
Source scale denominator: 58,000
Type of source media: ArcInfo Coverage
Source contribution:
Washington State Department of Ecology supplied the USFWS NWI data.

Source time period of content:
Time period information:
Single date/time:
Calendar date: c. 1995

Source currentness reference:
publication date

Process step:
Process description:
Metadata imported.

Process step:
Process description:
Dataset copied.

Source used citation abbreviation:
Server=panhead; Service=esri_ropa; User=dmck490; Version=SDE.DEFAULT


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Spatial Data Organization Information:


*Direct spatial reference method: Vector


Point and vector object information:
SDTS terms description:
*Name: WET
*SDTS point and vector object type: G-polygon
*Point and vector object count: 156874

ESRI terms description:
*Name: WET
*ESRI feature type: Simple
*ESRI feature geometry: Polygon
*ESRI topology: FALSE
*ESRI feature count: 156874
*Spatial index: TRUE
*Linear referencing: FALSE


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Spatial Reference Information:


Horizontal coordinate system definition:
Coordinate system name:
*Projected coordinate system name: NAD_1983_HARN_StatePlane_Washington_South_FIPS_4602_Feet
*Geographic coordinate system name: GCS_North_American_1983_HARN

Planar:
Map projection:
*Map projection name: Lambert Conformal Conic
Lambert conformal conic:
*Standard parallel: 45.833333
*Standard parallel: 47.333333
*Longitude of central meridian: -120.500000
*Latitude of projection origin: 45.333333
*False easting: 1640416.666667
*False northing: 0.000000

Planar coordinate information:
*Planar coordinate encoding method: coordinate pair
Coordinate representation:
*Abscissa resolution: 1.000000
*Ordinate resolution: 1.000000
*Planar distance units: survey feet

Geodetic model:
*Horizontal datum name: D_North_American_1983_HARN
*Ellipsoid name: Geodetic Reference System 80
*Semi-major axis: 6378137.000000
*Denominator of flattening ratio: 298.257222

Vertical coordinate system definition:
Altitude system definition:
*Altitude resolution: 1.000000
*Altitude encoding method: Explicit elevation coordinate included with horizontal coordinates

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Entity and Attribute Information:


Detailed description:
*Name: WET


Entity type:
Entity type label: Forest Practices Wetlands Layer
*Entity type type: Feature Class
*Entity type count: 156874

Attribute:
*Attribute label: OBJECTID
*Attribute alias: OBJECTID
*Attribute definition:
Internal feature number.
*Attribute definition source:
ESRI

*Attribute type: OID
*Attribute width: 4
*Attribute precision: 10
*Attribute scale: 0


Attribute domain values:
*Unrepresentable domain:
Sequential unique whole numbers that are automatically generated.


Attribute:
*Attribute label: FWS_CODE
*Attribute alias: FWS_CODE
Attribute definition:
USFWS National Wetlands Inventory (NWI) codes. See http://wetlandsfws.er.usgs.gov/NWI/index.html
Attribute definition source:
USFWS NWI. See the Wetlands and Deepwater Habitats Classification and NWI Map Codes Legend at http://wetlandsfws.er.usgs.gov/NWI/webatx/atx.html

*Attribute type: String
*Attribute width: 16
*Attribute precision: 0
*Attribute scale: 0


Attribute:
Attribute label: WLND_CLASS
*Attribute alias: CLASS
Attribute definition:
WLND_CLASS is one of two fields used to classify polygons. WLND_CLASS and WLND_TYPE classify polygons into five (5) categories: F3, forested wetland; O0, open water; W1 Type A Wetland; W2, Type B Wetland; and W3, other vegetated wetland.  WAC 222-16-035 defines forested wetland (F3),  Type A Wetland (W1),  and Type B Wetland (W2). WAC 222-16-035 distinguishes Type A wetlands by size and amount of open water. Open water is indicated by WLND_CLASS = O (letter "O"). * indicates inclusion of the subcategory (ie. PEM* includes PEM1F, PEM1FB, etc.).

*Attribute type: String
*Attribute width: 1
*Attribute precision: 0
*Attribute scale: 0


Attribute domain values:
Enumerated domain:
Enumerated domain value: F
Enumerated domain value definition:
Forested wetlands. All forested wetlands have WLND_CLASS = F and WLND_TYPE = 3 (other wetland).
Enumerated domain value definition source:
If FWS_CODE is in {PFO*, E2FO}, then WLND_CLASS = F, forested wetland, and WLND_TYPE = 3, other wetland.

Enumerated domain:
Enumerated domain value: O
Enumerated domain value definition:
Open water. All open water polygons have WLND_CLASS = O (letter "O") and WLND_TYPE = 0 (zero).
Enumerated domain value definition source:
If FWS_CODE is in {POW, PRB*, PUB1-4, PAB*, PUS1-4, PFL*, L1RB, L1UB, L1AB, L1OW, L2RB*, L2UB*, L2AB*, L2RS*, L2US1-4, L2OW}, then WLND_CLASS = O, open water, and WLND_TYPE = 0, no type.

Enumerated domain:
Enumerated domain value: W
Enumerated domain value definition:
Vegetated wetlands. Where WLND_CLASS = W, WLND_TYPE is in {1, 2, 3}.
Enumerated domain value definition source:
If FWS_CODE is in {PUB5, PML2, PEM*, L2US5, L2EM2, PSS*, PML1}, then WLND_CLASS = W, vegetated wetland, and WLND_TYPE is in {1, 2, 3}.

Attribute:
Attribute label: WLND_TYPE
*Attribute alias: TYPE
Attribute definition:
WLND_TYPE is the second of the two fields used to classify polygons. WLND_CLASS and WLND_TYPE classify polygons into five (5) categories: F3, forested wetland; O0, open water; W1 Type A Wetland; W2, Type B Wetland; and W3, other vegetated wetland.  WAC 222-16-035 defines forested wetland (F3),  Type A Wetland (W1),  and Type B Wetland (W2).  WAC 222-16-035 distinguishes Type A wetlands by size and amount of open water. Open water is indicated by WLND_CLASS = O (letter "O").  * indicates inclusion of the subcategory (ie. PEM* includes PEM1F, PEM1FB, etc.).

*Attribute type: SmallInteger
*Attribute width: 2
*Attribute precision: 1
*Attribute scale: 0


Attribute domain values:
Enumerated domain:
Enumerated domain value: 1
Enumerated domain value definition:
Type A vegetated wetland.

Enumerated domain:
Enumerated domain value: 2
Enumerated domain value definition:
Type B vegetated wetland.

Enumerated domain:
Enumerated domain value: 3
Enumerated domain value definition:
Other wetland. May be forested or other wetland.

Enumerated domain:
Enumerated domain value: 0
Enumerated domain value definition:
Open water polygons are assigned WLND_TYPE = 0 (zero). WAC 222-16-035 distinguishes Type A wetlands by size and amount of open water. Open water is indicated by WLND_CLASS = O (letter "O").

Attribute:
*Attribute label: SHAPE
*Attribute alias: Shape
*Attribute definition:
Feature geometry.
*Attribute definition source:
ESRI

*Attribute type: Geometry
*Attribute width: 4
*Attribute precision: 0
*Attribute scale: 0


Attribute domain values:
*Unrepresentable domain:
Coordinates defining the features.


Attribute:
*Attribute label: SHAPE_Length
*Attribute alias: SHAPE_Length
*Attribute definition:
Length of feature in internal units.
*Attribute definition source:
ESRI

*Attribute type: Double
*Attribute width: 8
*Attribute precision: 0
*Attribute scale: 0


Attribute domain values:
*Unrepresentable domain:
Positive real numbers that are automatically generated.


Attribute:
*Attribute label: SHAPE_Area
*Attribute alias: SHAPE_Area
*Attribute definition:
Area of feature in internal units squared.
*Attribute definition source:
ESRI

*Attribute type: Double
*Attribute width: 8
*Attribute precision: 0
*Attribute scale: 0


Attribute domain values:
*Unrepresentable domain:
Positive real numbers that are automatically generated.


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Distribution Information:


Resource description: Available for public download beginning January 2008. Available for public viewing on FPARS internet mapping website (ArcIMS). Available within DNR (1) from ROPA; (2) in UNIX from /am/fp/fpcovers/fpwet as 1448 separate coverages (an append.aml is available); and (3) for display on the FPRAT ArcIMS site.


Distribution liability:
DNR Licensing Agreement required. Go to: http://www3.wadnr.gov/dnrapp6/dataweb/dmmatrix.html

Standard order process:
Fees: none
Ordering instructions:
download from the Forest Practices Spatial Data Sets web page, http://www.dnr.wa.gov/forestpractices/data/.


Custom order process:
download from the Forest Practices Spatial Data Sets web page, http://www.dnr.wa.gov/forestpractices/data/
Technical prerequisites:
ability to utilize ESRI shapefile


Available time period:
Time period information:
Single date/time:
Calendar date: c. 1995

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Metadata Reference Information:


*Metadata date: 20080103


*Language of metadata: en


Metadata contact:
Contact information:
Contact person primary:
Contact person: Mac McKay
Contact organization: Washington State Department of Natural Resources, Forest Practices Division
Contact position: Hydrography and Transportation Data Steward


Contact address:
Address type: mailing and physical address
Address:
1111 Washington St SE
Address:
PO Box 47012
City: Olympia
State or province: WA
Postal code: 98504-7012
Country: USA

Contact voice telephone: 360-902-1453
Contact facsimile telephone: 360-902-1428


Contact electronic mail address: mac.mckay@dnr.wa.gov


*Metadata standard name: FGDC Content Standards for Digital Geospatial Metadata
*Metadata standard version: FGDC-STD-001-1998
*Metadata time convention: local time


Metadata access constraints: Note that the metadata is largely taken from the /am/fp/fpcovers/fpwet/README.DOC by Laura Vaugeois written in c. 1995. It has been edited and updated by Mac McKay.


Metadata extensions:
*Online linkage: http://www.esri.com/metadata/esriprof80.html
*Profile name: ESRI Metadata Profile

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Geoprocessing History:


Process:
*Process name: Create Feature Class
*Date: 20051028
*Time: 130451
*Tool location: M:\ArcGIS\ArcToolbox\Toolboxes\Data Management Tools.tbx\CreateFeatureclass
*Command issued: CreateFeatureclass "Database Connections\Panhead.User.sde\FP.FPWET" wet_reselect # FP_Layer SAME_AS_TEMPLATE SAME_AS_TEMPLATE "PROJCS['NAD_1983_HARN_StatePlane_Washington_South_FIPS_4602',GEOGCS['GCS_North_American_1983_HARN',DATUM['D_North_American_1983_HARN',SPHEROID['GRS_1980',6378137.0,298.257222101]],PRIMEM['Greenwich',0.0],UNIT['Degree',0.0174532925199433]],PROJECTION['Lambert_Conformal_Conic'],PARAMETER['False_Easting',1640416.666666667],PARAMETER['False_Northing',0.0],PARAMETER['Central_Meridian',-120.5],PARAMETER['Standard_Parallel_1',45.83333333333334],PARAMETER['Standard_Parallel_2',47.33333333333334],PARAMETER['Latitude_Of_Origin',45.33333333333334],UNIT['Foot_US',0.3048006096012192]];200000 -200000 1;0 1;0 1" FP 0 0 0 "Database Connections\Panhead.User.sde\FP.FPWET\FP.wet_reselect"


Process:
*Process name: Append
*Date: 20051028
*Time: 130941
*Tool location: M:\ArcGIS\ArcToolbox\Toolboxes\Data Management Tools.tbx\Append
*Command issued: Append FP_Layer "Database Connections\Panhead.User.sde\FP.FPWET\FP.wet_reselect" TEST "Database Connections\Panhead.User.sde\FP.FPWET\FP.wet_reselect"


Process:
*Process name: FeatureClassToFeatureClass_2
*Date: 20051028
*Time: 130941
*Tool location: M:\ArcGIS\ArcToolbox\Toolboxes\Conversion Tools.tbx\FeatureClassToFeatureClass
*Command issued: FeatureClassToFeatureClass "Database Connections\Panhead.User.sde\FP.FPWET\FP.wet_raw_quads_orig" "Database Connections\Panhead.User.sde\FP.FPWET" wet_reselect "CLASS in ( 'F', 'O', 'W')" "WETALL_ID WETALL_ID VISIBLE;FWS_CODE FWS_CODE VISIBLE;CLASS CLASS VISIBLE;TYPE TYPE VISIBLE;SHAPE.AREA SHAPE.AREA VISIBLE;SHAPE.LEN SHAPE.LEN VISIBLE" SAME_AS_TEMPLATE SAME_AS_TEMPLATE FP 0 "Database Connections\Panhead.User.sde\FP.FPWET\FP.wet_reselect"


Process:
*Process name: Dissolve_4
*Date: 20051028
*Time: 135714
*Tool location: M:\ArcGIS\ArcToolbox\Toolboxes\Data Management Tools.tbx\Dissolve
*Command issued: Dissolve "Database Connections\Panhead.User.sde\FP.FPWET\FP.wet_reselect" "Database Connections\Panhead.User.sde\FP.FPWET\FP.wet" FWS_CODE;CLASS;TYPE # SINGLE_PART


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