King County GIS Center
King Street Center
201 S. Jackson St.
Suite 706
Seattle, WA 98104
giscenter@kingcounty.gov

+ 47.59909 N
- 122.33136 W

+ 47°  35' 56.72"
- 122° 19' 52.90"

 

Wetlands defined from Critical Area Ordinance surveys in King County

Description | Contacts | Attribute Information | Constraints

Data layer thumbnail image

Description

Layer name: WETLANDS
Subject category: enviro
Title: Wetlands defined from Critical Area Ordinance surveys in King County
Feature Count: 2008
Feature Type: Polygon
Abstract: Documented wetlands in King County; WA. Attributes include the date captured and other details for each feature. Some features document only a portion of a larger wetland in the landscape. This represents only a small portion of all wetlands in King County.
Purpose: Wetlands_area was created to store wetland features that have been field verified and documented by King County staff, including specific details regarding the nature of the data source.
Status: Complete
Updated: As needed
Time period of content: (single date,as YYYYMMDD)::
Time period of content: (date range, as YYYYMMDD):: 20040615 - 20120802
Spatial reference: WA State Plane North
FGDC Documentation: Classic or FAQ
Open Data Availability: Yes
Place Keywords: Pacific NW, King County, WA, Washington state,
Theme Keywords: enviro, wetland, wetland buffers, CAO, SAO, Critical Area Ordinance, Sensitive Area Ordinance,
Lineage: Available
Supplemental Information: The Critical Area Designation process at King County DPER began recording wetland features in 2005 under the Critical Area Ordinance. This information was archived on scanned paper maps. Wetlands_area and their corresponding wetland buffers when indicated was created to provide this data to GIS users at King County. Wetlands_area was designed to accommodate other sources of data and provide the user with contextual information regarding its capture. The historic SAO_Wetlands_area layer and sixteen other wetland layers from various other sources have been gathered into the Wetland_all_area feature class to provide a more comprehensive and far less detailed source of wetland data.

Contacts

Maintained by:
King County Dept. of Permitting and Environmental Review
Primary: Paul McCombs, GIS Program Manager, 206-477-4514
(How to e-mail a County contact)
Secondary: KCGIS Center; giscenter@kingcounty.gov. This mailbox is monitored during business hours.

Attribute Information

ItemDescriptionDomain
_SERIAL_ID_Unique integer as primary ikey
Range Min:1002.0
Range Max:2301.0
_CAO_PERMIT_NO_Critical Area Ordinance permit (project) numberThe value of the permit number ie. L06SA518_001_1R
_KCINVENTORYNO_King County inventory number/code. Only for SAO wetland polygons; relate to business tablesKC Inventory number
_DATE_ACCURACY_The date the survey was done
LLow
MMedium
HHigh
_DATE_LASTOBS_Date wetland was last observedDate entered as month day year
_DELIN_DATE_Date wetland was delineated
_DELIN_STAT_Was wetland validated?
_WETLAND_CATEGORY_The CAO has adopted the Department of Ecology’s Wetland Rating methodology. Reference CAO Section 183 Wetlands are classified into four categories using the Washington State Wetland Rating System for Western Washington (Ecology publication #04-06-025). The Washington State Wetland Rating System categorizes wetlands based on specific attributes such as rarity, sensitivity, and function. The rating system uses a point system designed to differentiate between wetlands based on their sensitively to disturbance, their rarity, our ability to replace them and the functions that they Wetlands 2-54 provide. It is important to recognize that wetlands of all categories have valuable functions in the landscape. The wetland rating system does not recognize illegal modification to wetlands. The Washington State Wetland Rating System for Western Washington is available at: http://www.ecy.wa.gov/biblio/0406025.html.
Iunique or rare wetland type, more sensitive . Score 70 (out of 100 from wetland rating form)
IIWetlands that are difficult, though not impossible to replace, provide high levels of function.score 51 to 69 points for habitat
IIIWetlands with a moderate level of functions, scores of 30 to 50 points for habitat
IVWetlands with lowest levels of functions (scores less than 30 points for habitat
_WETLAND_RATING_Wetland rating such as 1,2,3,4 from SAO Wetland survey. Category I Wetlands that represent a unique or rare wetland type, or are more sensitive to disturbance than most wetlands, or are relatively undisturbed and contain ecological attributes that are impossible to replace within a human lifetime, or provide a high level of functions, score of 70 points (out of 100) on the wetland rating form. Category 1 wetlands include estuarine, bogs, mature and old-growth forests, coastal lagoons, wetlands that perform many functions very well. Category 1 wetlands may be part of the “priority habitat” as defined by the Washington State Department of Fish and Wildlife (WDFW) http://www.wdfw.wa.gov/hab/phspage.htm, or be identified as a Natural Heritage wetland by the Washington Natural Heritage Program of the Department of Natural Resources (DNR) http://www.dnr.wa.gov/nhp/index.html. Category II Wetlands that are difficult, though not impossible to replace, and provide high levels of some functions. These wetlands occur more commonly than Category I wetlands but still need a relatively high level of protection. Category II wetlands include, but are not limited to , wetlands that perform functions well and score 51 to 69 points for habitat. Category III Wetlands with a moderate level of functions, scores between 30 to 50 points for habitat and generally have been disturbed in some ways, and are often less diverse or more isolated. Category IV Wetlands that have the lowest levels of functions (scores less than 30 points for habitat) and are often heavily disturbed. These are wetlands that we should be able to replace or improve. These wetlands may provide some important function and also need to be protected. See Habitat Point used in wetland rating, Category I = Score >70 Category II = Score 51-69 Category III = Score 30-50 Category IV = Score < 30
2Category II = Score 51-69; Wetlands that are difficult, though not impossible to replace, and provide high levels of some functions. These wetlands occur more commonly than Category I wetlands but still need a relatively high level of protection. Category II wetlands include, but are not limited to , wetlands that perform functions well and score 51 to 69 points for habitat.
3Category III = Score 30-50; Wetlands with a moderate level of functions, scores between 30 to 50 points for habitat and generally have been disturbed in some ways, and are often less diverse or more isolated.
4Category IV = Score < 30; Wetlands that have the lowest levels of functions (scores less than 30 points for habitat) and are often heavily disturbed. These are wetlands that we should be able to replace or improve. These wetlands may provide some important function and also need to be protected.
1Category I = Score >70; Wetlands that represent a unique or rare wetland type, or are more sensitive to disturbance than most wetlands, or are relatively undisturbed and contain ecological attributes that are impossible to replace within a human lifetime, or provide a high level of functions, score of 70 points (out of 100) on the wetland rating form. Category 1 wetlands include estuarine, bogs, mature and old-growth forests, coastal lagoons, wetlands that perform many functions very well. Category 1 wetlands may be part of the “priority habitat” as defined by the Washington State Department of Fish and Wildlife (WDFW) http://www.wdfw.wa.gov/hab/phspage.htm, or be identified as a Natural Heritage wetland by the Washington Natural Heritage Program of the Department of Natural Resources (DNR) http://www.dnr.wa.gov/nhp/index.html.
_WETLAND_TYPE_Wetland type
1Unique/Outstanding
2Significant
3Low Concern
4National Wetland Inventorydesignated wetland
_WETLAND_ATTRIBUTE_Code for wetland system/subsystem, class & subclass
_ACREAGE_ALT_Current acreage from LUT
_ACREAGE_GIS_Acreage calculated for polygons from GIS layer
_WETLAND_NAME_Common name of wetland
_ORIG_DATA_SOURCE_Original data source
_WETLAND_STATUS_Wetland status as of today
ActiveWetland exists and is active
PartialWetland partially exists
ExtinctWetland is extinct (no longer exists)
_CONFIDENCE_LEVEL_Confidence level of data source
_COMMENTS_Historic wetland comments/notes
_WETLAND_BUFFER_Whether the polygon is wetland or a wetland buffer
_HABITAT_POINTS_version 2 updated 2008 Habitat Points are used to rate wetland catagories Category I = Score >70 Category II = Score 51-69 Category III = Score 31-50 Category IV = Score < 30 Score of 30 or less = Category 4Score of 31-50 = Category 3Score of 51-69 = Category 2Score of 70 or greater = Category 1
_BUFFER_LENGTH_The area in feet of the buffer distance


Constraints

Access: None

Use: King County data are made available with the understanding that they shall be used exclusively by the obtainer or his/her authorized agents. Digital products may not be reproduced or redistributed in any form or by any means without the express written authorization of King County.