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Service Description: This service displays the Soil Depth theme from the GSM v0.1 based on U.S. General Soil Map (STATSGO2). The Soil Depth and plant exploitable (effective) depth themes are displayed by three property values; high, low, and representative. Each value displays the depth range in cm.
Map Name: Layers9
Legend
All Layers and Tables
Layers:
Description: The "soildepth" table is designed to facilitate thematic mapping. The table is national in extent and can be
used in conjunction with the GSM Version 0.1 grid to map rock_depth and root depth.
The "l" represents the minimum low value of all the components within each map unit and is used as an approximate lower
confidence limit estimate for the map unit at each depth.
The "h" represents the maximum value of all the components within each map unit and is used as an approximate upper
confidence limit estimate for the map unit at each depth.
The tables can be attached to the raster map layer data using the common "mukey" for spatial mapping. This table represents soil depth (rock_depth and root depth) property. The table contains 14 columns.
| Field | Description |
|---|
| mukey: | Map unit identification key |
| rock_components: | Total number of components within the map unit |
| rock_depth_r: | Value for representative rock_depth |
| rock_depth_l: | Value for lower rock_depth of all components |
| rock_depth_h: | Value for higher rock_depth of al components |
| rock_cntrb_pct: | Percent (by area) of map unit used for weighted average calculation |
| rock_misc_pct: | Percent (by area) of map unit under miscellaneous |
| root_components: | Total number of components within the map unit |
| root_depth_r: | Value for representative rock_depth |
| root_depth_l: | Value for lower root_depth of all components |
| root_depth_h: | Value for lower root_depth of all components |
| root_cntrb_pct: | Percent (by area) of map unit used for weighted average calculation |
| root_misc_pct: | Percent (by area) of map unit under miscellaneous |
Soil depth is the lowest depth of the bottom most horizon in each component unless restrictive layer type
(lithic, paralithic, duripans and petrocalcics) are present.
In the midwest and easter United States, often no recognition of soil depth class exists in loess, alluvium, outwash, and lacustrine depths;
The soil is assumed very deep and depth is set to the bottom of the lowest layer. The bottom layer could be set at 152 cm or 200 cm.
The root depth refers to the soil depth that can be exploited based on restrictions other than physical ones (lithic, paralithic, duripans and petrocalcics).
Recognition of root limiting layers involves at least 3 chemical barriers to root growth. The first kind is a layer having a pH of less than 3.5. The second
one is a layer having an electrical conductivity of more than 12. The third kind is a possible dense layer determined through an examination of the differential
between the populated bulk density of a layer and a theoretical optimum density. If the differential reaches a threshold, then the layer is considered to stop
root growth. If no root-restricting zone is identified, a depth of 152 cm is used to approximate the maximum rooting depth.
Values for each component (soil type) were selected only where the data were not missing and
the component kind was not ‘Miscellaneous area’. Miscellaneous areas were excluded since they are dominantly occupied by
non-soil materials. Major miscellaneous areas include badlands, beaches, chutes, cinder lands, dams, dumps, dune lands, glaciers, gullied land,
lava flows, mined lands, oil-waste land, pits, playas, riverwash, rock outcrop, rubble land, slickens, urban land and water.
Detailed descriptions of each category can be found in the National Soil Survey Handbook, Part 627 - Legend Development and Data Collection,
Subpart B - 627.10 (U.S. Department of Agriculture, Natural Resources Conservation Service. National soil survey handbook, title 430-VI
[http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/ref/?cid=nrcs142p2_054242 (accessed 14 February 2018)].
The representative depth estimates for each profile (i.e. component or soil type), were weighted within each map unit
(i.e. group of components mapped together), using the component percentage by area of the map unit as the weights. Miscellaneous areas (non-soil
materials) did not contribute to the map unit weighted average so the weighted mean represents only the
soils in each map unit. The remaining soil components were scaled to represent 100% of the map unit
and weighted accordingly in the calculation of the map unit average. Values for map units dominated by non-soil material, or with more than 50%
as ‘Miscellaneous area’ were set to null.
Use Limitations: This dataset is not designed for use as a primary regulatory tool in permitting or siting decisions, but may be used as a reference source.
This is public information and may be interpreted by organizations, agencies, units of government, or others based on needs; however,
they are responsible for the appropriate application. Federal, State, or local regulatory bodies are not to reassign to the
Natural Resources Conservation Service any authority for the decisions that they make. The Natural Resources Conservation Service will not
perform any evaluations of these maps for purposes related solely to State or local regulatory programs. Digital data files are
periodically updated. Files are dated, and users are responsible for obtaining the latest version of the data.
Scale Range: Maximum (zoomed in) 1:250,000, Minimum (zoomed out) 1:1,500,000
Citations: Helmick, J., Nauman, T., Thompson, J., Burkholder, A., Hempel, J., Odgers, N., Libohova, Z., 2017. GlobalSoilMap Version 0.1:
Soil property maps from the General Soil Map Database (STATSG02) database for the USA.
Purpose: Providing the public with a GSM v0.1 GSM11 soil depth theme service.
Creation Date: 2015
Publication Date: 20180124
Revision Date:
Refresh Cycle: Final product.
Version: 1.0.1
Change Log: Description edits.
Report Service Errors
Report Data Issues or Questions
Copyright Text: Soil Survey Staff - West Virginia University, Gridded GlobalSoilMap Property maps (GSM, Version 0.1) for conterminous United States, USDA-NRCS
Spatial Reference:
4326
(4326)
Single Fused Map Cache: false
Initial Extent:
XMin: -332.73709012635464
YMin: -425.26184861042196
XMax: 113.61063437373741
YMax: 645.0617764663293
Spatial Reference: 4326
(4326)
Full Extent:
XMin: -180
YMin: 17.000000000000057
XMax: 180.00083333333305
YMax: 72.00083333333335
Spatial Reference: 4326
(4326)
Units: esriDecimalDegrees
Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP
Document Info:
Title: Layers
Author:
Comments: The "soildepth" table is designed to facilitate thematic mapping. The table is national in extent and can be
used in conjunction with the GSM Version 0.1 grid to map rock_depth and root depth.
The "l" represents the minimum low value of all the components within each map unit and is used as an approximate lower
confidence limit estimate for the map unit at each depth.
The "h" represents the maximum value of all the components within each map unit and is used as an approximate upper
confidence limit estimate for the map unit at each depth.
The tables can be attached to the raster map layer data using the common "mukey" for spatial mapping. This table represents soil depth (rock_depth and root depth) property. The table contains 14 columns.
<table><tr><th>Field</th><th>Description</th></tr>
<tr><td>mukey: </td><td>Map unit identification key</td></tr><tr><td>rock_components: </td><td>Total number of components within the map unit</td></tr><tr><td>rock_depth_r: </td><td>Value for representative rock_depth</td></tr><tr><td>rock_depth_l: </td><td>Value for lower rock_depth of all components</td></tr><tr><td>rock_depth_h: </td><td>Value for higher rock_depth of al components</td></tr><tr><td>rock_cntrb_pct: </td><td>Percent (by area) of map unit used for weighted average calculation</td></tr><tr><td>rock_misc_pct: </td><td>Percent (by area) of map unit under miscellaneous</td></tr><tr><td>root_components: </td><td>Total number of components within the map unit</td></tr><tr><td>root_depth_r: </td><td>Value for representative rock_depth</td></tr><tr><td>root_depth_l: </td><td>Value for lower root_depth of all components</td></tr><tr><td>root_depth_h: </td><td>Value for lower root_depth of all components</td></tr><tr><td>root_cntrb_pct: </td><td>Percent (by area) of map unit used for weighted average calculation</td></tr><tr><td>root_misc_pct: </td><td>Percent (by area) of map unit under miscellaneous</td></tr></table>
Soil depth is the lowest depth of the bottom most horizon in each component unless restrictive layer type
(lithic, paralithic, duripans and petrocalcics) are present.
In the midwest and easter United States, often no recognition of soil depth class exists in loess, alluvium, outwash, and lacustrine depths;
The soil is assumed very deep and depth is set to the bottom of the lowest layer. The bottom layer could be set at 152 cm or 200 cm.
<p>The root depth refers to the soil depth that can be exploited based on restrictions other than physical ones (lithic, paralithic, duripans and petrocalcics).
Recognition of root limiting layers involves at least 3 chemical barriers to root growth. The first kind is a layer having a pH of less than 3.5. The second
one is a layer having an electrical conductivity of more than 12. The third kind is a possible dense layer determined through an examination of the differential
between the populated bulk density of a layer and a theoretical optimum density. If the differential reaches a threshold, then the layer is considered to stop
root growth. If no root-restricting zone is identified, a depth of 152 cm is used to approximate the maximum rooting depth.</p>
<p>Values for each component (soil type) were selected only where the data were not missing and
the component kind was not ‘Miscellaneous area’. Miscellaneous areas were excluded since they are dominantly occupied by
non-soil materials. Major miscellaneous areas include badlands, beaches, chutes, cinder lands, dams, dumps, dune lands, glaciers, gullied land,
lava flows, mined lands, oil-waste land, pits, playas, riverwash, rock outcrop, rubble land, slickens, urban land and water.
Detailed descriptions of each category can be found in the National Soil Survey Handbook, Part 627 - Legend Development and Data Collection,
Subpart B - 627.10 (U.S. Department of Agriculture, Natural Resources Conservation Service. National soil survey handbook, title 430-VI
[http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/ref/?cid=nrcs142p2_054242 (accessed 14 February 2018)].
The representative depth estimates for each profile (i.e. component or soil type), were weighted within each map unit
(i.e. group of components mapped together), using the component percentage by area of the map unit as the weights. Miscellaneous areas (non-soil
materials) did not contribute to the map unit weighted average so the weighted mean represents only the
soils in each map unit. The remaining soil components were scaled to represent 100% of the map unit
and weighted accordingly in the calculation of the map unit average. Values for map units dominated by non-soil material, or with more than 50%
as ‘Miscellaneous area’ were set to null.</p>
<p><strong>Use Limitations: </strong>This dataset is not designed for use as a primary regulatory tool in permitting or siting decisions, but may be used as a reference source.
This is public information and may be interpreted by organizations, agencies, units of government, or others based on needs; however,
they are responsible for the appropriate application. Federal, State, or local regulatory bodies are not to reassign to the
Natural Resources Conservation Service any authority for the decisions that they make. The Natural Resources Conservation Service will not
perform any evaluations of these maps for purposes related solely to State or local regulatory programs. Digital data files are
periodically updated. Files are dated, and users are responsible for obtaining the latest version of the data.<br/>
<strong>Scale Range: </strong>Maximum (zoomed in) 1:250,000, Minimum (zoomed out) 1:1,500,000<br/>
<strong>Citations: </strong>Helmick, J., Nauman, T., Thompson, J., Burkholder, A., Hempel, J., Odgers, N., Libohova, Z., 2017. GlobalSoilMap Version 0.1:
Soil property maps from the General Soil Map Database (STATSG02) database for the USA.<br/></p>
<strong>Purpose: </strong>Providing the public with a GSM v0.1 GSM11 soil depth theme service.</strong><br/>
<strong>Creation Date: </strong>2015<br/>
<strong>Publication Date: </strong>20180124<br/>
<strong>Revision Date: </strong><br/>
<strong>Refresh Cycle: </strong>Final product.<br/>
<strong>Version: </strong>1.0.1<br/>
<strong>Change Log: </strong>Description edits.<br/>
<strong><a href="mailto:usdanrcs@midatl.service-now.com?Subject=GEOSRV" target="_top">Report Service Errors</a></strong><br/>
<strong><a href="mailto:SoilsHotline@lin.usda.gov?Subject=Global Soils v0.1 on nrcsgeoservices " target="_top">Report Data Issues or Questions</a></strong><br/>
Subject: Soil Depth derived from Version 0.1 of GSM for United States based on U.S. General Soil Map (STATSGO2)
Category:
Keywords: GlobalSoilMap,Soil,Properties,raster,gridded,soils,properties,soil,depth,standard,depths
AntialiasingMode: None
TextAntialiasingMode: Force
Supports Dynamic Layers: false
MaxRecordCount: 1000
MaxImageHeight: 4096
MaxImageWidth: 4096
Supported Query Formats: JSON, geoJSON, PBF
Supports Query Data Elements: true
Min Scale: 0
Max Scale: 0
Supports Datum Transformation: true
Child Resources:
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Supported Operations:
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