Keywords
Theme:
grazing allotments, Bureau of Land Management, cattle, sheep
Place:
California
Description
Abstract
BLM grazing allotments in California.
Purpose
This data set is to be used to illustrate BLM grazing allotments in California, and in GIS analysis such as inventories of features withing BLM grazing allotments in California, and resource conflicts.
Supplementary Information
_________________
Status of the data
Complete
Data update frequency:
Irregular
Time period for which the data is relevant
Date and time:
20030218
Description:
publication date
Publication Information
Who created the data: U.S. Bureau of Land Management
Date and time:
(yyyymmdd [pub/release date] or Unpublished)
Publisher and place:
U.S. Bureau of Land Management, California State Office, Sacramento, CA
_________________
Data storage and access information
File name: casodev:caso.RangeAllotments
Type of data: vector digital data
Location of the data:
Server=ilmcaso0db1; Service=sde:informix; Database=caso0dev; User=caso; Version=sde.DEFAULT
http://www.blm.gov/ca/gis/
Data processing environment: Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 9.2.2.1350
Accessing the data
Data transfer size: 3.428 MB
Network location:
http://www.ca.blm.gov/gis/
Constraints on accessing and using the data
Access constraints:
None - Though Subject to Cost Recovery Rules
Use constraints:
These data are public information and may be used and interpreted
by organizations, agencies, units of government, or others. The user
has sole responsibilty for ensuring the appropriate application of
these data and the U.S. Bureau of Land Management shall not be held
liable for any use or misuse of the data described hereon.
Generally, these data are intented for small scale (1:24,000 and smaller)
natural resource management and planning applications. It is strongly
recommended that these data be aquired directly from the U.S. Bureau of
Land Management and not indirectly through some other source which may
have changed the data. It is also strongly recommended that careful attention
be paid to the content of the metadata file associated with these data. Users
are cautioned that digitial enlargement of these data to scales larger than
that at which they where originally mapped can cause misinterpretation. Users
are further cautioned that these data and interpretations derived from them
do not eliminate the need for onsite survey and evaluation of specific sites
for intensive uses.
The U.S. Bureau of Land Management should be cited as the data source in any
products derived from these data.
Details about this document
Contents last updated: 20071120
at time 23050900
Contents last reviewed: yyyymmdd
Who completed this document
James Scrivner
U.S. Bureau of Land Management, California State Office
Mailing and Physical Address:
916-978-4559 (voice)
916-978-4580 (fax)
jscrivne@ca.blm.gov
Standards used to create this document
Horizontal coordinate system
Projected coordinate system name: NAD_1983_California_Transverse_Mercator_(CTM)
Geographic coordinate system name: GCS_North_American_1983
Details
Map Projection Name: Transverse Mercator
Scale Factor at Central Meridian: 0.999400
Longitude of Central Meridian: -119.000000
Latitude of Projection Origin: 37.000000
False Easting: 500000.000000
False Northing: 1500000.000000
Planar Coordinate Information
Planar Distance Units: meters
Coordinate Encoding Method: coordinate pair
Coordinate Representation
Abscissa Resolution: 0.000151
Ordinate Resolution: 0.000151
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
Altitude System Definition
Resolution: 0.000003
Encoding Method: Explicit elevation coordinate included with horizontal coordinates
_________________
Bounding coordinates
Horizontal
In decimal degrees
West:
-154.418702
East:
-80.332273
North:
59.650183
South:
21.235537
In projected or local coordinates
Left: -1759561.581900
Right: 3047786.821655
Top: 4017077.823671
Bottom: -44544.909898
_________________
Lineage
FGDC lineage
Process step 1
Process description: The data were gathered from the BLM CA Field Offices.
A coverage data design was developed. The data sets
were then combined into one coverage data set. Edits
were then done to produce an accurate unified coverage
data set of BLM grazing allotments in California.
Process date: 20030101
Process step 2
Process description: Metadata imported.
Source used: C:\DOCUME~1\jscrivne\LOCALS~1\Temp\xml5.tmp
Process date: 20030806
Process step 3
Process description: Dataset copied.
Source used: m:\gis\master\basic\range_mgmt\grzpca
Process step 4
Process description: Dataset copied.
Source used: m:\gis\master\basic\range_mgmt\grzpca
Process step 5
Process description: Metadata imported.
Source used: \\blm\dfs\ca\pub\gisimage\so\gis\ca_sync\metadata\grzpca.xml
Sources
Source 1:
(BLM)
Media: disc
Scale denominator: varies, 100,000 through GPS'd on the ground data.
Contribution: raw data, attributes
Currentness of this source
_________________
Spatial data quality
Horizontal positional accuracy
This is estimated to be that of a 1:100,000 quadrangle, + /- 120 feet, and
is based on the source materials integrated into this product.
_________________
Spatial data description
Vector data information
ESRI description
casodev:caso.RA_Arcs
ESRI feature type: Simple
Geometry type: Polyline
Topology: TRUE
Feature count: 8256
Spatial Index: TRUE
Linear referencing: FALSE
XYRank: 1
ZRank: 1
Topology weight: 5.000000
Events on validation: FALSE
Participates in topology rules:
637
Participates in topology rules:
638
Participates in topology rules:
639
Participates in topology rules:
641
Participates in topology rules:
644
casodev:caso.RA_Pastures
ESRI feature type: Simple
Geometry type: Polygon
Topology: TRUE
Feature count: 1574
Spatial Index: TRUE
Linear referencing: FALSE
XYRank: 1
ZRank: 1
Topology weight: 5.000000
Events on validation: FALSE
Participates in topology rules:
642
Participates in topology rules:
643
Participates in topology rules:
644
casodev:caso.RA_Allotments
ESRI feature type: Simple
Geometry type: Polygon
Topology: TRUE
Feature count: 712
Spatial Index: TRUE
Linear referencing: FALSE
XYRank: 1
ZRank: 1
Topology weight: 5.000000
Events on validation: FALSE
Participates in topology rules:
640
Participates in topology rules:
641
Participates in topology rules:
643
SDTS description
Feature class: SDTS feature type, feature count
casodev:caso.RA_Arcs:
String, 8256
casodev:caso.RA_Pastures:
G-polygon, 1574
casodev:caso.RA_Allotments:
G-polygon, 712
Feature class:
Node, planar graph, 7268
Feature class:
Point, 4
Feature class:
Composite object, 700
Feature class:
Composite object, 128
Details for casodev:caso.RA_Arcs
Type of object: Feature Class
Number of records: 8256
_________________
Details for casodev:caso.RA_Pastures
Type of object: Feature Class
Number of records: 1574
_________________
Details for casodev:caso.RA_Allotments
Type of object: Feature Class
Number of records: 712