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Service Description: This service displays the Soil Depth theme from the GSM v0.5 based on Soil Survey Geographic Database (SSURGO) filled in with STATSGO2 for missing SSURGO data. The Soil Depth theme is displayed by; soil depth, root depth, bedrock depth, and percent of map unit used for weighted average calculation for each.
Map Name: Layers
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 conjuction with the GSM Version 0.5 grid to map soil depth, rock_depth and root depth.
The tables can be attached to the raster map layer data using the common "mukey" for spatial mapping. This table represents depth (soil_depth, rock_depth and root_depth) property. The table contains 12 columns.
Field | Description |
mukeyint: | Map unit identification key |
source: | SSURGO or STATSGO2 |
count30m: | Number of pixels in the map unit |
km2: | Area in km2 of map unit extent |
muname: | Descriptive map unit name |
mu_depth_soil_data: | Value for soil depth of all components |
mu_depth_bedrock_BRonly: | Value for bedrock depth of all components |
mu_depth_rootzone: | Value for soil root depth of all components |
mu_sum_comppct_r_fix_depth_soil_data: | Percent (by area) of map unit used for weighted average calculation |
mu_sum_comppct_r_fix_depth_bedrock_BRonly: | Percent (by area) of map unit used for weighted average calculation |
mu_sum_comppct_r_fix_depth_rootzone: | Percent (by area) of map unit used for weighted average calculation |
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 miscellanous 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 Colelction,
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) 1:24,000, Minimum (zoomed out) 1:1,500,000
Citations: Bliss, N., Thompson, J., Hempel, J., Libohova, Z., 2017. GlobalSoilMap Version 0.5: Soil property maps from the State Soil geography (SSURGO) Database
filled in with General Soil Map Database (STATSG02) database for the lower 48 states, USA.
Purpose: Providing the public with a GSM v0.5 soil depth theme service.
Creation Date: 2015
Publication Date: 20180308
Revision Date:
Refresh Cycle: Final product.
Version: 1.0.0
Change Log: Published service.
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: -136.65554069755868
YMin: 3.1813648491057904
XMax: -58.89475502702513
YMax: 78.52405734821522
Spatial Reference: 4326
(4326)
Full Extent:
XMin: -127.88791666665702
YMin: 22.877916666676636
XMax: -65.27458333332372
YMax: 51.60541666667662
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 conjuction with the GSM Version 0.5 grid to map soil depth, rock_depth and root depth.
The tables can be attached to the raster map layer data using the common "mukey" for spatial mapping. This table represents depth (soil_depth, rock_depth and root_depth) property. The table contains 12 columns.
<table><tr><th>Field</th><th>Description</th></tr>
<tr><td>mukeyint: </td><td>Map unit identification key</td></tr><tr><td>source: </td><td>SSURGO or STATSGO2</td></tr><tr><td>count30m: </td><td>Number of pixels in the map unit</td></tr><tr><td>km2: </td><td>Area in km2 of map unit extent</td></tr><tr><td>muname: </td><td>Descriptive map unit name</td></tr><tr><td>mu_depth_soil_data: </td><td>Value for soil depth of all components</td></tr><tr><td>mu_depth_bedrock_BRonly: </td><td>Value for bedrock depth of all components</td></tr><tr><td>mu_depth_rootzone: </td><td>Value for soil root depth of all components</td></tr><tr><td>mu_sum_comppct_r_fix_depth_soil_data: </td><td>Percent (by area) of map unit used for weighted average calculation</td></tr><tr><td>mu_sum_comppct_r_fix_depth_bedrock_BRonly: </td><td>Percent (by area) of map unit used for weighted average calculation</td></tr><tr><td>mu_sum_comppct_r_fix_depth_rootzone: </td><td>Percent (by area) of map unit used for weighted average calculation</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.
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 miscellanous 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 Colelction,
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><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) 1:24,000, Minimum (zoomed out) 1:1,500,000<br/>
<strong>Citations: </strong>Bliss, N., Thompson, J., Hempel, J., Libohova, Z., 2017. GlobalSoilMap Version 0.5: Soil property maps from the State Soil geography (SSURGO) Database
filled in with General Soil Map Database (STATSG02) database for the lower 48 states, USA.<br/>
<strong>Purpose: </strong>Providing the public with a GSM v0.5 soil depth theme service.</strong><br/>
<strong>Creation Date: </strong>2015<br/>
<strong>Publication Date: </strong>20180308<br/>
<strong>Revision Date: </strong><br/>
<strong>Refresh Cycle: </strong>Final product.<br/>
<strong>Version: </strong>1.0.0<br/>
<strong>Change Log: </strong>Published service.<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 v0.5 on nrcsgeoservices " target="_top">Report Data Issues or Questions</a></strong><br/>
Subject: Soil Depth derived from Version 0.5 of GSM for United States based on SSURGO filled in with STATSGO2 for missing SSURGO data.
Category:
Keywords: GlobalSoilMap,Soil Properties,raster,gridded,soils,properties,soil depth,standard depths
AntialiasingMode: None
TextAntialiasingMode: Force
Supports Dynamic Layers: false
Resampling: 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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