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EMAP-West Soil / Landform Metrics

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: US EPA/ORD/NERL/ESD Landscape Ecology Branch
Publication_Date: Unknown
Title: wemaphuc8_slmetrics
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage: N/A
Description:
Abstract:
Derived from 1:250,000-scale USGS HUC boundaries, 8-digit hierarchical
Purpose:
8-digit hydrologic unit codes (catalog units) for the EMAP-West states, including a suite of soil and landform metrics for use in landscape ecology studies.
Supplemental_Information:
SOIL AND LANDFORM METRIC DESCRIPTIONS:

awc|STATSGO weighted-average soil available water capacity expressed in inches of water per inch of soil

bd|STATSGO weighted-average soil bulk density expressed in megagrams per cubic meter of the <2-mm soil fraction

bldr|STATSGO weighted-average soil boulders fraction (> 250-mm and < 4000-mm diameter) using approximate EMAP physical habitat substrate criteria, expressed as percent by weight

caco3|STATSGO weighted-average soil calcium carbonate equivalent expressed as percent by weight of the <2-mm soil fraction

cbbl|STATSGO weighted-average soil cobbles fraction (> 75-mm and < 250-mm diameter) using approximate EMAP physical habitat substrate criteria, expressed as percent by weight

cgrvl|STATSGO weighted-average soil coarse gravel fraction (> 5-mm and < 75-mm diameter) using approximate EMAP physical habitat substrate criteria, expressed as percent by weight

clay|STATSGO weighted-average USDA soil clay fraction (< 0.002-mm diameter) expressed as percent by weight of the <2-mm soil fraction

fgrvl|STATSGO weighted-average soil fine gravel fraction (> 2-mm and < 5-mm diameter) using approximate EMAP physical habitat substrate criteria, expressed as percent by weight

fns|STATSGO weighted-average soil fines fraction (< 0.075-mm diameter) using approximate EMAP physical habitat substrate criteria, expressed as percent by weight

gypsum|STATSGO weighted-average soil gypsum content expressed as percent by weight of the <20-mm soil fraction

moisture|SEDMOD weighted-average topographic soil moisture index

om|STATSGO weighted-average soil organic matter content expressed as percent by weight of the <2-mm soil fraction

perm|STATSGO weighted-average soil permeability rate expressed as inches per hour

plancurve|SEDMOD weighted-average 6*std range of slope planform curvature (perpendicular to slope) expressed in centimeters

profcurve|SEDMOD weighted-average 6*std range of slope profile curvature (parallel to slope) expressed in centimeters

rough|SEDMOD weighted-average Mannings' n surface roughness coefficient

rsp|STATSGO weighted-average range site production expressed in pounds per acre per year

rusle_a_khy|RUSLE weighted-average gross soil erosion (A value) computed on a cell-by-cell area basis, expressed as kilograms/hectare/year

rusle_c|RUSLE weighted-average effect of soil surface cover characteristics (C factor), computed from NRI data on a cell-by-cell area basis

rusle_k|RUSLE weighted-average effect of inherent soil surface erodibility (K factor), from STATSGO, computed on a cell-by-cell area basis

rusle_ls|RUSLE weighted-average effect of slope length and steepness (LS factor) computed iteratively from DEM data on a cell-by-cell area basis

rusle_p|RUSLE weighted-average effect of soil conservation practices (P factor) computed from NRI data on a cell-by-cell area basis

rusle_r|RUSLE weighted-average rainfall-derived erosivity (R factor), from PRISM 2-km grid, computed on a cell-by-cell area basis

salin|STATSGO weighted-average soil salinity expressed as millimhos per centimeter of electrical conductivity within the <2-mm soil fraction

sand|STATSGO weighted-average USDA soil sand fraction (0.05-mm to 2-mm diameter) expressed as percent by weight of the <2-mm soil fraction

sar|STATSGO weighted-average soil sodium absorption ratio of the <2-mm soil fraction

sedmod_khy|SEDMOD weighted-average net sediment delivery computed iteratively on a cell-by-cell area basis, expressed as kilograms/hectare/year

sils|Susceptibility/incidence of landslides from lithologic maps expressed as a weighted-average, normalized scale 1.0 to 3.0 (low to high)

smorph|Susceptibility for mass wasting based on slope morphology expressed as a weighted average, normalized scale 1.0 to 3.0 (low to high)

snd|STATSGO weighted-average soil sand fraction (> 0.075-mm and <2-mm diameter) using approximate EMAP physical habitat substrate criteria, expressed as percent by weight

sthk|STATSGO weighted-average soil thickness expressed in inches, i.e., depth to the shallower of a hardpan, rock layer, or 60 inches

strmprox|SEDMOD weighted-average distance proximity to stream riparian zone, expressed in meters; zero or null values represent sites where no stream was identified

surfclay|STATSGO weighted-average soil surface horizon USDA clay fraction expressed as percent by weight of the <2-mm soil fraction

tpis|Topographic position index for watershed stream zone; null values represent sites where no stream was identified

tpiw|Topographic position index for whole watershed

wei1|STATSGO weighted-average soil surface wind erodibility index expressed in tons per acre per year

wtdep|STATSGO weighted-average soil drainage expressed as depth to water table in feet

hydgrp|STATSGO weighted-average soil hydrologic group, from A through D with modifiers

Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: unknown
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -126.409557
East_Bounding_Coordinate: -94.282147
North_Bounding_Coordinate: 49.650764
South_Bounding_Coordinate: 29.441237
Keywords:
Theme:
Theme_Keyword: EMAP-West
Theme_Keyword: watershed
Theme_Keyword: HUC
Theme_Keyword: hydrologic units
Theme_Keyword: metrics
Theme_Keyword: soil and landform
Access_Constraints: None
Use_Constraints: None
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Daniel T. Heggem
Contact_Organization: US EPA/ORD/NERL/ESD Landscape Ecology Branch
Contact_Position: Research Environmental Scientist
Contact_Address:
Address_Type: mailing address
Address: P.O. Box 93478
City: Las Vegas
State_or_Province: NV
Postal_Code: 89193-3478
Country: USA
Contact_Voice_Telephone: (702) 798-2366
Contact_Electronic_Mail_Address: heggem.daniel@epamail.epa.gov
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 8.2.0.700

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: Not presently available
Logical_Consistency_Report: Not presently available
Completeness_Report: Not presently available
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: Not presently available
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: Not presently available
Lineage:
Process_Step:
Process_Description:
Original 250K HUC coverage was reprojected and built, then 8-digit HUCS were reselected which represent the EMAP-West state (CA, MT, ID, NV, AZ, UT, CO, WA, OR, WY, NM, ND, SD) contribution to the overall EMAP-West study area of 8-digit HUCs. The suite of soil and landform metric scripts and programs were run to produce HUC8-based metrics for use in landscape ecology studies.
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Rick Van Remortel
Contact_Organization: Lockheed Martin Environmental Services
Contact_Position: Principal Scientist
Contact_Address:
Address_Type: mailing address
Address: 1050 E. Flamingo Road Suite E120
City: Las Vegas
State_or_Province: NV
Postal_Code: 89119
Country: USA
Contact_Voice_Telephone: (702) 897-3295
Contact_Electronic_Mail_Address: rvanremo@lmepo.com
Cloud_Cover: N/A

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 891

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Albers Conical Equal Area
Albers_Conical_Equal_Area:
Standard_Parallel: 34.000000
Standard_Parallel: 46.000000
Longitude_of_Central_Meridian: -110.000000
Latitude_of_Projection_Origin: 31.000000
False_Easting: 0.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.004096
Ordinate_Resolution: 0.004096
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: wemaphuc8_slmetrics
Attribute:
Attribute_Label: FID
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: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: AREA
Attribute:
Attribute_Label: PERIMETER
Attribute:
Attribute_Label: WESTHUC8_
Attribute:
Attribute_Label: WESTHUC8_I
Attribute:
Attribute_Label: HUC
Attribute:
Attribute_Label: REGION
Attribute:
Attribute_Label: SUBREGION
Attribute:
Attribute_Label: ACCTUNIT
Attribute:
Attribute_Label: HUCNUM
Attribute:
Attribute_Label: STATE
Attribute:
Attribute_Label: WEST_ID
Attribute:
Attribute_Label: ORDER_
Attribute:
Attribute_Label: ST_WSH_ID
Attribute:
Attribute_Label: AREA_KHA
Attribute:
Attribute_Label: CELLS
Attribute:
Attribute_Label: SILS
Attribute_Definition: Susceptibility / incidence of landslides
Attribute:
Attribute_Label: SMORPH
Attribute_Definition: Susceptibility for mass wasting based on slope morphology
Attribute:
Attribute_Label: TPIW
Attribute_Definition: Topographic position index for whole watershed
Attribute:
Attribute_Label: TPIS
Attribute_Definition: Wind erodibility index ( tons / ac / yr )
Attribute:
Attribute_Label: RUSLE_A_KH
Attribute_Definition: Topographic position index for watershed stream zone
Attribute:
Attribute_Label: RUSLE_R
Attribute_Definition: Rainfall-derived erosivity ( R factor )
Attribute:
Attribute_Label: RUSLE_K
Attribute_Definition: Soil surface erodibility ( K factor )
Attribute:
Attribute_Label: RUSLE_LS
Attribute_Definition: Slope length and steepness ( LS factor )
Attribute:
Attribute_Label: RUSLE_C
Attribute_Definition: Soil surface cover characteristics ( C factor )
Attribute:
Attribute_Label: RUSLE_P
Attribute_Definition: Soil conservation practices (P factor)
Attribute:
Attribute_Label: SEDMOD_KHY
Attribute_Definition: Net sediment delivery ( kg / ha / yr )
Attribute:
Attribute_Label: MOISTURE
Attribute_Definition: Topographic soil moisture index
Attribute:
Attribute_Label: PROFCURVE
Attribute_Definition: Profile slope curvature variability ( 6 * SD )
Attribute:
Attribute_Label: PLANCURVE
Attribute_Definition: Planform slope curvature variability ( 6 * SD )
Attribute:
Attribute_Label: STRMPROX
Attribute_Definition: Distance proximity to stream riparian zone ( m )
Attribute:
Attribute_Label: ROUGH
Attribute_Definition: Roughness coefficient
Attribute:
Attribute_Label: STHK
Attribute_Definition: Soil thickness ( in )
Attribute:
Attribute_Label: HYDGRP
Attribute_Definition: Soil hydrologic groups
Attribute:
Attribute_Label: WTDEP
Attribute_Definition: Depth to apparent water table ( ft )
Attribute:
Attribute_Label: SURFCLAY
Attribute_Definition: Surface clay fraction, USDA ( wt % )
Attribute:
Attribute_Label: OM
Attribute_Definition: Organic matter content ( wt % )
Attribute:
Attribute_Label: CACO3
Attribute_Definition: Calcium carbonate content ( wt % )
Attribute:
Attribute_Label: BD
Attribute_Definition: Bulk density ( g / cm3 )
Attribute:
Attribute_Label: AWC
Attribute_Definition: Available water capacity ( in / in )
Attribute:
Attribute_Label: PERM
Attribute_Definition: Permeability ( in / hr )
Attribute:
Attribute_Label: BLDR
Attribute_Definition: Boulders fraction ( wt % )
Attribute:
Attribute_Label: CBBL
Attribute_Definition: Cobbles fraction ( wt % )
Attribute:
Attribute_Label: CGRVL
Attribute_Definition: Coarse gravel fraction ( wt % )
Attribute:
Attribute_Label: FGRVL
Attribute_Definition: Fine gravel fraction ( wt % )
Attribute:
Attribute_Label: SND
Attribute_Definition: Sand fraction, EMAP ( wt % )
Attribute:
Attribute_Label: FNS
Attribute_Definition: Fines fraction ( wt % )
Attribute:
Attribute_Label: SAND
Attribute_Definition: Sand fraction, USDA ( wt % )
Attribute:
Attribute_Label: CLAY
Attribute_Definition: Clay fraction ( wt % )
Attribute:
Attribute_Label: GYPSUM
Attribute_Definition: Gypsum content ( wt % )
Attribute:
Attribute_Label: RSP
Attribute_Definition: Range site production ( lbs / ac / yr )
Attribute:
Attribute_Label: SALIN
Attribute_Definition: Soil salinity ( mmhos / cm )
Attribute:
Attribute_Label: SAR
Attribute_Definition: Sodium absorption ratio
Attribute:
Attribute_Label: WEI1

Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Daniel T. Heggem
Contact_Organization: US EPA/ORD/NERL/ESD Landscape Ecology Branch
Contact_Position: Research Environmental Scientist
Contact_Address:
Address_Type: mailing address
Address: P.O. Box 93478
City: Las Vegas
State_or_Province: NV
Postal_Code: 89193-3478
Country: USA
Contact_Voice_Telephone: (702) 798-2366
Contact_Electronic_Mail_Address: heggem.daniel@epamail.epa.gov
Resource_Description: Downloadable Data
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 23.633

Metadata_Reference_Information:
Metadata_Date: 20050413
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Daniel T. Heggem
Contact_Organization: US EPA/ORD/NERL/ESD Landscape Ecology Branch
Contact_Position: Research Environmental Scientist
Contact_Address:
Address_Type: mailing address
Address: P.O. Box 93478
City: Las Vegas
State_or_Province: NV
Postal_Code: 89193-3478
Contact_Voice_Telephone: (702) 798-2366
Contact_Electronic_Mail_Address: heggem.daniel@epamail.epa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
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