MLRA

Metadata:
Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Department of Agriculture (USDA) Natural Resources Conservation Service (NRCS)
Publication_Date: 2002
Title:
MLRA
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Washington DC
Publisher: USDA/NRCS/NHQ/RAD
Other_Citation_Details:
State of the Land Coverage
Online_Linkage: NA
Description:
Abstract:
This coverage contains the Major Land Resource Area (MLRA) boundaries for the conterminous United States.  MLRA boundaries were last updated by the U.S. Department of Agriculture (USDA) Natural Resources Conservation Service (NRCS), formerly the Soil Conservation Service (SCS), in 2002.
Purpose:
Intended as a basemap for US national level natural resource analysis.

For use with the GeoStac database, this data layer was compiled in order to simplify pesticide risk assessment and provide a common data set for all stakeholders.
Supplemental_Information:
This coverage contains the Major Land Resource Area (MLRA) boundaries for the conterminous United States.  MLRA boundaries were last updated by the U.S. Department of Agriculture (USDA) Natural Resources Conservation Service (NRCS), formerly the Soil Conservation Service (SCS), in 2002.

The original, source GIS files and metadata document, available at http://www.nrcs.usda.gov/technical/land/aboutmaps/coverages.html, provides additional details as to the compilation process of MLRA boundaries.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: Last updated in 2002.
Currentness_Reference:
publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Unknown
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -127.872399
East_Bounding_Coordinate: -65.356384
North_Bounding_Coordinate: 51.601530
South_Bounding_Coordinate: 22.877919
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: MLRA
Place:
Place_Keyword: United States, conterminous 48 states
Stratum:
Stratum_Keyword: None
Temporal:
Temporal_Keyword: None
Access_Constraints: None.
Use_Constraints:
Designed for national, regional and state level analysis.  It may or may not be appropriate for use at larger scales.  This map does not meet National Map Accuracy Standards.  An improved version of the currently established MLRA lines is in development by NRCS.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Waterborne Environmental, Inc.
Contact_Person: Spatial Technologies Group
Contact_Address:
Address_Type: mailing and physical address
Address:
897-B Harrison Street, S.E.
City: Leesburg
State_or_Province: Virginia
Postal_Code: 20175
Country: USA
Contact_Voice_Telephone: 703.777.0005
Contact_Facsimile_Telephone: 703.777.0676
Data_Set_Credit:
The Major Land Resource Area (MLRA) boundaries for the conterminous United States compiled by the U.S. Department of Agriculture (USDA) Natural Resources Conservation Service (NRCS), and last updated in 2002.
Security_Information:
Security_Classification_System: None
Security_Classification: Unclassified
Security_Handling_Description: None
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 1; ESRI ArcCatalog 9.1.0.722
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
See Entity_Attribute_Information
Logical_Consistency_Report:
Polygon topology present.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Value: meters
Horizontal_Positional_Accuracy_Explanation:
Resolution as reported
Lineage:
Process_Step:
Process_Description:
Converted source USDA, NRCS, MLRA data downloaded from http://www.nrcs.usda.gov/technical/land/aboutmaps/coverages.html to ArcGIS geodatabase feature class file format
Process_Date: 05.14.05
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Waterborne Environmental, Incorporated
Contact_Person: Spatial Technologies Group
Process_Step:
Process_Description:
Projected geodatabase MLRA feature class from source projection of GCS NAD 27 Albers to NAD 83 Albers Equal Area.
Process_Date: 05.14.05
Process_Step:
Process_Description:
Imported and edited source metadata document available at http://www.nrcs.usda.gov/technical/land/aboutmaps/us48mlra.html#section7.
Process_Date: 05.14.05
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Waterborne Environmental, Incorporated
Contact_Person: Spatial Technologies Group
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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: 1583
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 6841
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 1540
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Albers Conical Equal Area
Albers_Conical_Equal_Area:
Standard_Parallel: 29.500000
Standard_Parallel: 45.500000
Longitude_of_Central_Meridian: -96.000000
Latitude_of_Projection_Origin: 23.000000
False_Easting: 0.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.002363
Ordinate_Resolution: 0.002363
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
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Resolution: 0.000010
Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates
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Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: MLRA
Entity_Type_Definition:
Major Land Resource Areas for the Conterminous 48 States
Entity_Type_Definition_Source:
SDA/NRCS/NHQ/RAD
Attribute:
Attribute_Label: OBJECTID
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: MLRA
Attribute_Definition:
Major Land Resource Area code
Attribute:
Attribute_Label: MLRANAME
Attribute_Definition:
Name of Major Land Resource Area
Attribute:
Attribute_Label: MO
Attribute:
Attribute_Label: SHARED
Attribute:
Attribute_Label: LRR
Attribute_Definition:
Land Resource Region code
Attribute:
Attribute_Label: LRRNAME
Attribute_Definition:
Land Resource Region name
Attribute:
Attribute_Label: Shape_Length
Attribute_Definition:
Length of feature in internal units.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: Shape_Area
Attribute_Definition:
Area of feature in internal units squared.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Positive real numbers that are automatically generated.
Attribute:
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: PERIMETER
Enumerated_Domain_Value_Definition:
Perimeter of poly/region in coverage units
Enumerated_Domain_Value_Definition_Source:
Computed
Attribute:
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: US48MLRA#
Enumerated_Domain_Value_Definition:
Internal feature number
Enumerated_Domain_Value_Definition_Source:
Computed
Overview_Description:
Entity_and_Attribute_Detail_Citation:
USDA, NRCS, Major Land Resource Area (MLRA) boundaries for the conterminous United States FGDC metadata document, dated 2002, available at: http://www.nrcs.usda.gov/technical/land/aboutmaps/us48mlra.html.
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Texas A&M University, Spatial Sciences Laboratory
Contact_Person: Texas A&M University, Spatial Sciences Laboratory
Contact_Address:
Address_Type: mailing and physical address
Address:
1500 Research Parkway, Suite B223
City: College Station
State_or_Province: Texas
Postal_Code: 77845
Contact_Voice_Telephone: 979-862-7956
Resource_Description: Downloadable Data or DVD
Distribution_Liability:
None
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: www.geostac.org
Access_Instructions:
Registered user ID and password provided by the Spatial Sciences Laboratory.
Fees: None
Ordering_Instructions:
Data can be downloaded from www.geostac.org with a registered user ID and password provided by the Spatial Sciences Laboratory.
Turnaround: Not Applicable
Custom_Order_Process:
Not applicable
Technical_Prerequisites:
GIS capable
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Metadata_Reference_Information:
Metadata_Date: 20060227
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Waterborne Environmental, Inc.
Contact_Person: Spatial Technologies Group
Contact_Address:
Address_Type: mailing and physical address
Address:
897-B Harrison Street, S.E
City: Leesburg
State_or_Province: Virginia
Postal_Code: 20175
Country: USA
Contact_Voice_Telephone: 703.777.0005
Contact_Facsimile_Telephone: 703.777.0676
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: None.
Metadata_Use_Constraints:
This metadata document is intended for use with the GeoStac database. It has been compiled and modified from the original source metadata document, which can be obtained by visiting the NRCS web site at http://www.nrcs.usda.gov/technical/land/aboutmaps/us48mlra.html.
Metadata_Extensions:
Online_Linkage: http://www.esri.com/metadata/esriprof80.html
Profile_Name: ESRI Metadata Profile
Metadata_Extensions:
Online_Linkage: http://www.esri.com/metadata/esriprof80.html
Profile_Name: ESRI Metadata Profile
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