Impervious Surfaces Washington 1996

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator:

Sanborn Solutions, Maria Fiorella, Senior Remote Sensing Analyst

Publication_Date: 20050801

Title: Impervious Surfaces Washington 1996

Geospatial_Data_Presentation_Form: raster digital data

Publication_Information:

Publication_Place: Olympia, Washington

Publisher: Washington Department of Ecology

Online_Linkage:

https://fortress.wa.gov/ecy/gispublic/DataDownload/WQ_IBM_Landcover_Impervious1996.zip

Description:

Abstract:

The 1996 Impervious layer is a modified version of the National Land Cover Database 2001 Impervious dataset for mapping zone 1 (Washington). A change detection between 1996 and 2001 Landsat TM data identified areas that were not impervious in 1996. These non-impervious areas were masked out of the impervious estimate. The original impervious dataset was produced through a cooperative project conducted by the Multi-Resolution Land Characteristics (MRLC) Consortium. The MRLC Consortium is a partnership of federal agencies (www.mrlc.gov), consisting of the U.S. Geological Survey (USGS), the National Oceanic and Atmospheric Administration (NOAA), the U.S. Environmental Protection Agency (EPA), the U.S. Department of Agriculture (USDA), the U.S. Forest Service (USFS), the National Park Service (NPS), the U.S. Fish and Wildlife Service (FWS), the Bureau of Land Management (BLM) and the USDA Natural Resources Conservation Service (NRCS). One of the primary goals of the project is to generate a current, consistent, seamless, and accurate National Land Cover Database (NLCD) circa 2001 for the United States at medium spatial resolution. For a detailed definition and discussion on MRLC and the NLCD 2001 products, refer to Homer et al. (2003) and <http://www.mrlc.gov/mrlc2k.asp>. The NLCD 2001 was created by partitioning the U.S. into mapping zones. A total of 66 mapping zones were delineated within the conterminous U.S. based on ecoregion and geographical characteristics, edgematching features and the size requirement of Landsat mosaics. Mapping zone 1 encompasses the Western portion of Washington. Questions about the NLCD mapping zone 1 can be directed to the NLCD 2001 land cover mapping team at the USGS EROS Data Center (EDC), Sioux Falls, SD (605) 594-6151 or mrlc@usgs.gov.

Purpose:

To improve the understanding of water quality issues by mapping land cover changes for Western Washington from 1991 to 2001.

Supplemental_Information:

Modified 2001 impervious map originally published by the National Oceanographic and Atmospheric Administration (NOAA) Coastal Services Center (CSC)/Coastal Change Analysis Program (C-CAP).

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19950918

Ending_Date: 20020226

Currentness_Reference: Date of Landsat Scenes

Status:

Progress: Complete

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -125.471315

East_Bounding_Coordinate: -118.417903

North_Bounding_Coordinate: 49.704210

South_Bounding_Coordinate: 45.053810

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: GIS

Theme_Keyword: U.S. Geological Survey

Theme_Keyword: Imperviousness

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: Zone 1

Place_Keyword: Western Washington

Access_Constraints: None

Use_Constraints:

Reproduction or redistribution of copyrighted digital data sets or products derived from outside of licensees' organization or entity is expressly forbidden. The only exception is redistribution to consultants working for the licensee, and then only for purposes, related to work for the licensee. Such consultants may not further reproduce or redistribute these data sets. None of these data shall be electronically duplicated on magnetic or optical media for use by others, in whole or part, without permission of the appropriate custodial division of the Washington State Department of Ecology. Any hardcopies utilizing these data sets shall clearly indicate their source. If the licensee has modified the data in any way they are obligated to describe the types of modifications they have performed on the hardcopy map. Licensee specifically agrees not to misrepresent these data sets, nor to imply that changes they made were approved by the Washington State Department of Ecology.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Washington Department of Ecology, Water Quality Program

Contact_Person: Ann Wessel

Contact_Address:

Address_Type: mailing

Address: P.O. Box 47600

City: Olympia

State_or_Province: Washington

Postal_Code: 98504-7600

Country: US

Contact_Voice_Telephone: 360-407-6457

Contact_Facsimile_Telephone: 360-407-6426

Contact_Electronic_Mail_Address: awes461@ecy.wa.gov

Browse_Graphic:

Browse_Graphic_File_Name:

https://fortress.wa.gov/ecy/gispublic/DataDownload/WQ_IBM_Landcover_Impervious1991.jpg

Browse_Graphic_File_Description: Simple image

Browse_Graphic_File_Type: JPG

Native_Data_Set_Environment:

Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.2.2.3552

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Areas in this dataset that were not impervious in 1996 (<5% or the area) were set to 0. Since these were relatively small changes to the original downloaded data from the USGS website, they should therefore have similar accuracy values. To find out more aobut this data set contact the USGS at <http://www.mrlc.gov/mrlc2k.asp>

Logical_Consistency_Report:

The method employed to map percent imperviousness for NLCD 2001 mapping zone 1 consists of three key steps: deriving reference data of imperviousness from the high spatial resolution images, calibrating density prediction models using reference data and Landsat spectral bands, and extrapolating the developed models spatially to map per-pixel imperviousness. The 1996 impervious dataset has the same impervious values except for those areas that were not impervious in 1996. These areas were set to a value of 0.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator:

USGS dataset modified slightly by Washington Department of Ecology

Title: Western Washington 1996 Impervious

Publication_Information:

Publication_Place: Olympia, Washington

Publisher: Washington Department of Ecology

Other_Citation_Details:

The dataset was modified by removing areas that were not impervious in 1996 based on Landsat TM data. These non-impervious areas were set to 0.

Type_of_Source_Media: None

Source_Citation_Abbreviation: Western Washington 1996 Impervious

Process_Step:

Process_Description:

See link at USGS for methods used to develop the original 2001 impervious data layer. <http://www.mrlc.gov/mrlc2k.asp> or email: mrlc@usgs.gov

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Raster

Raster_Object_Information:

Raster_Object_Type: Grid Cell

Row_Count: 16892

Column_Count: 17001

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: NAD 1983 HARN StatePlane Washington South FIPS 4602 Feet

Lambert_Conformal_Conic:

Standard_Parallel: 45.83333333333334

Standard_Parallel: 47.33333333333334

Longitude_of_Central_Meridian: -120.5

Latitude_of_Projection_Origin: 45.33333333333334

False_Easting: 1640416.666666667

False_Northing: 0.0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.000000026454105572781834

Ordinate_Resolution: 0.000000026454105572781834

Planar_Distance_Units: foot_us

Geodetic_Model:

Horizontal_Datum_Name: D North American 1983 HARN

Ellipsoid_Name: GRS 1980

Semi-major_Axis: 6378137.0

Denominator_of_Flattening_Ratio: 298.257222101

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: wa_1996_impervious.img.vat

Attribute:

Attribute_Label: OID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: Value

Attribute:

Attribute_Label: Count

Attribute:

Attribute_Label: Red

Attribute:

Attribute_Label: Green

Attribute:

Attribute_Label: Blue

Attribute:

Attribute_Label: Class_name

Attribute:

Attribute_Label: Opacity

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Washington State Department of Ecology

Contact_Person: Rich Kim

Contact_Position: Spatial Database Administrator

Contact_Address:

Address_Type: mailing

Address: P.O. Box 47600

City: Olympia

State_or_Province: Washington

Postal_Code: 98504-7600

Country: United States of America

Contact_Voice_Telephone: (360) 407-6121

Contact_Facsimile_Telephone: (360) 407-6493

Contact_Electronic_Mail_Address: rich.kim@ecy.wa.gov

Distribution_Liability:

Users must assume responsibility to determine the usability of these data.

Metadata_Reference_Information:

Metadata_Date: 20170906

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Washington Department of Ecology, Water Quality Program

Contact_Person: Rich Kim

Contact_Position: Spatial Database Administrator

Contact_Address:

Address_Type: mailing

Address: P.O. Box 47600

City: Olympia

State_or_Province: Washington

Postal_Code: 98504-7600

Country: US

Contact_Voice_Telephone: (360) 407-6121

Contact_Facsimile_Telephone: (360) 407-6397

Contact_Electronic_Mail_Address: rkim461@ecy.wa.gov

Hours_of_Service: 8:00am - 5:00pm

Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time