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Service Description: The Riparian Zone mask is a grid file that identifies all surface water features; including, lakes, rivers, streams, wetlands, estuaries, and nearshore ocean waters, as mapped in the 1:100,000-scale; plus an approximate 100 meter buffer around these features. The Riparian Zone is created using grid analysis to combine two surface water indicators and then place an approximate 100 meter buffer around these features. First, the surface water features from the 2011 National Land Cover Database (NLCD). Features included are 'Open Water' (code 11), 'Woody Wetlands' (code 90) and 'Emergent Herbaceous Wetlands' (code 95). Source data used was NLCD2011 version 1, (see NLCD2011 metadata). Second, the flowline and waterbody features as represented in the catseed grid from the National Hydrography Dataset (NHD) Plus version 2. Source data used was NHD Plus Version 2.1, downloaded October 31, 2012 (see NHD Plus version 2 metadata). The combination of these two datasets represents surface water and is referred to as the ‘Water Mask’ (see Water Mask metadata). Last, distance from surface water is calculated using the ArcMap Spatial Analyst Euclidean Distance tool. All cells with a distance of 108 meters or less are included in the riparian zone. The combination of these two datasets and all cells with a distance of 108 meters or less from surface water are given a value of one and are included in the Riparian Zone (RZ) mask. A value of 1 indicates the cell is a surface water feature or in the riparian zone.
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Copyright Text: US EPA, Region 4
Spatial Reference:
PROJCS["NAD_1983_Albers",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Albers"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-96.0],PARAMETER["Standard_Parallel_1",29.5],PARAMETER["Standard_Parallel_2",45.5],PARAMETER["Latitude_Of_Origin",23.0],UNIT["Meter",1.0]]
Single Fused Map Cache: false
Initial Extent:
XMin: -2795166.5471869344
YMin: -283104.22679493343
XMax: 2644776.5471869353
YMax: 3770394.226794935
Spatial Reference: PROJCS["NAD_1983_Albers",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Albers"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-96.0],PARAMETER["Standard_Parallel_1",29.5],PARAMETER["Standard_Parallel_2",45.5],PARAMETER["Latitude_Of_Origin",23.0],UNIT["Meter",1.0]]
Full Extent:
XMin: -2493045.0000000014
YMin: 177284.9999999944
XMax: 2342655.000000001
YMax: 3310005.0000000037
Spatial Reference: PROJCS["NAD_1983_Albers",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Albers"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-96.0],PARAMETER["Standard_Parallel_1",29.5],PARAMETER["Standard_Parallel_2",45.5],PARAMETER["Latitude_Of_Origin",23.0],UNIT["Meter",1.0]]
Units: esriMeters
Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP
Document Info:
Title: Riparian Zone
Author: US EPA, Region 4
Comments: The Riparian Zone mask is a grid file that identifies all surface water features; including, lakes, rivers, streams, wetlands, estuaries, and nearshore ocean waters, as mapped in the 1:100,000-scale; plus an approximate 100 meter buffer around these features. The Riparian Zone is created using grid analysis to combine two surface water indicators and then place an approximate 100 meter buffer around these features. First, the surface water features from the 2011 National Land Cover Database (NLCD). Features included are 'Open Water' (code 11), 'Woody Wetlands' (code 90) and 'Emergent Herbaceous Wetlands' (code 95). Source data used was NLCD2011 version 1, (see NLCD2011 metadata). Second, the flowline and waterbody features as represented in the catseed grid from the National Hydrography Dataset (NHD) Plus version 2. Source data used was NHD Plus Version 2.1, downloaded October 31, 2012 (see NHD Plus version 2 metadata). The combination of these two datasets represents surface water and is referred to as the ‘Water Mask’ (see Water Mask metadata). Last, distance from surface water is calculated using the ArcMap Spatial Analyst Euclidean Distance tool. All cells with a distance of 108 meters or less are included in the riparian zone. The combination of these two datasets and all cells with a distance of 108 meters or less from surface water are given a value of one and are included in the Riparian Zone (RZ) mask. A value of 1 indicates the cell is a surface water feature or in the riparian zone.
Subject: The HCZ mask shows all surface water features as well as an approximate 100 meter buffer around these features.
Category:
Keywords: Riparian Zone,RZ,WSIO,Watershed Index
AntialiasingMode: None
TextAntialiasingMode: Force
Supports Dynamic Layers: false
MaxRecordCount: 1000
MaxImageHeight: 4096
MaxImageWidth: 4096
Supported Query Formats: JSON, AMF, geoJSON
Min Scale: 0
Max Scale: 0
Supports Datum Transformation: true
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