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LIBRARY : COUNTY
LAYER NAME : GOVOWNERSHIP
COVERAGE NAME : GOVTOWNA
LOCATION OF RELATED TABLE: /callib/statewide/info/arc:govtowna.lut
COVERAGE DESCRIPTION:
The 'GOVOWNERSHIP' layer shows classifications of land
ownership and was originally digitized by the Forest and
Rangeland Resources Assessment Program of the California
Department of Forestry. It was then registered to the Public
Land Survey coverage at Teale Data Center to ensure that
coincident lines would overlay properly. It is derived from
1:100,000 Bureau of Land Management Surface Management
Status Maps. Some of these maps date back to the 1970's. The
most recent national forest maps and other sources were
used to update the BLM maps prior to digitizing.
The coverage was developed with state, regional, or county
level analysis in mind. It does not included parcel level
data and may not address the needs of users interested in
small areas.
Updates to the government ownership coverage (1995):
- Expansion of National Park Service lands in Death Valley,
East Mojave and Joshua Tree.
- Inclusion of ownership updates in Southern California
from UC Santa Barbara GAP analysis program.
- Addition of many Bureau of Indian Affairs reservations.
- Updates in Santa Monica Mountains from NPS, UCSB.
- State and county parks in San Mateo County.
- Changes in Mono Lake, Salton Sea and Chocolate Mountain areas.
Updates to the government ownership coverage (1998):
- Inclusion of ownership updates from Dept of Fish and Game
- Inclusion of ownership updates from Golden Gate National
Recreation Area, prmarily in Marin County
- Minor changes from military base closures.
- Minor National Forest and BLM changes resulting from California
Department of Forestry and Fire Protection SRA review process.
- UPDATE item in polygon and arc attribute tables expanded from 4 to
8 intergers (YYYYMMDD)
Updates to the government ownership coverage (1999):
- Inclusion of ownership updates from Bureau of Land Management
If the user is aware of further updates or corrections, please
contact us. Along with improvements to the coverage come improvements
to the updating process which allows changes to be incorporated into the
coverage more quickly.
VITAL STATISTICS:
Datum: NAD 27
Projection: Albers
Units: Meters
1st Std. Parallel: 34 00 00 (34.0 degrees N)
2nd Std. Parallel: 40 30 00 (40.5 degrees N)
Longitude of Origin: -120 00 00 (120.0 degrees W)
Latitude of Origin: 00 00 00 (0.0 degrees)
False Easting (X shift): 0
False Northing (Y shift): -4,000,000
Source: BLM Surface Management Status Maps
Source Media: Paper
Source Projection: Universal Transverse Mercator
Source Units: n/a
Source Scale: 1:100,000
Source of Updates Noted
Capture Method: Originally hand digitized at
CDFFP/FRRAP
Conversion Software: ARC/INFO rev. 7.2.1
Data Structure: Vector
ARC/INFO Coverage Type: Polygon & Line
ARC/INFO Precision: Double
ARC/INFO Tolerances: 30 meters
Number of Features: 22,361 polygons
Layer Size: 16 MB
Data Updated: September 1999
DATA DICTIONARY:
DATAFILE NAME: GOVTOWNA.PAT
RECORD LENGTH: 40
Non-standard POLYGON attribute fields:
COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC
-------------------------------------------------------------
1 AREA 8 18 F 5
9 PERIMETER 8 18 F 5
17 GOVTOWNA# 4 5 B -
21 GOVTOWNA-ID 4 5 B -
25 OWNERCODE 5 5 C -
30 SOURCE 2 2 C -
32 ACC_LEVEL 1 1 C -
33 UPDATE 8 8 I -
** REDEFINED ITEMS **
25 OC1 1 1 I -
25 OC2 2 2 I -
25 OC5 5 5 I -
AREA : The area of the polygon in square coverage units.
PERIMETER : The length of the polygon perimeter of the polygon
in coverage units.
GOVTOWNA# : The software-assigned unique integer identification
number.
GOVTOWNA-ID : A user-assigned identifier number.
OWNERCODE: Character code indicating ownership, and relate item
to GOVTOWNA.LUT.
SOURCE: Indicates source of data.
SOURCE NAME COMMENT
12 SANTA MONICA MTS NATL PARK DIGITAL DATA
13 BUREAU OF LAND MANAGEMENT NPS EXPANSION
14 SANTA MONICA MTS NATL PARK NPS MAP
21 TEALE DATA CENTER ORIGINAL DATA
22 DEPT HOUSING & COMMUNITY DEV INDIAN ASSISTANCE PROGRAM
31 SAN MATEO COUNTY PARK & REC DIVISION MAP
41 UC SANTA BARBARA GAP ANALYSIS PROGRAM
51 SANTA MONICA MTS TRAIL MAP PRIVATE VENDOR
Note: The first character of SOURCE can be redefined
as follows to indicate type of institution:
1 Federal
2 State
3 Local government
4 Education
5 Private
ACC_LEVEL: 1 = Good. Digitized from 1:100,000 scale or better map
or of equal quality.
2 = Fair. Screen (heads up) digitizing using other
coverages' features for guide.
3 = Approx. Approximate location
UPDATE: Year and month of update. Example 9408 = August 1994.
OC1: Integer redefinition of 1st character position in OWNERCODE
to indicate level of government:
OC1 Govt Level Sub-level
0 NONE
1 LOCAL
2 STATE
3 FEDERAL MILITARY
4 FEDERAL MISC
5 FEDERAL USFW
6 FEDERAL NPS
7 FEDERAL BLM
8 FEDERAL USFS
9 PRIVATE
OC2: Integer redefinition of first two characters in OWNERCODE,
to indicate government agency. In many instances the value of the
item 'OWNER' in the previous ownership coverage is preserved here.
In the case of National Forests, the last 3 characters of
OWNERCODE preserve the former coding.
Current coding, agency and previous coding are listed here:
OC2 AGENCY
08 NONE
09 WATER BODY
10 CITY / COUNTY LAND
11 CITY / COUNTY PARK
12 WATER DISTRICT
14 OPEN SPACE PRESERVE
20 STATE LAND COMM
21 FORESTRY
23 PARKS & RECREATION
24 FISH AND GAME
25 CORRECTIONS
26 STATE UNIVERSITY
27 UNIV OF CALIFORNIA
28 CALIF NATIONAL GUARD
30 MILITARY GENERAL
31 MILITARY CORP OF ENG
32 MILITARY ARMY
33 MILITARY NAVY
34 MILITARY USMC
35 MILITARY USAF
37 MILITARY USCG
38 MILITARY HOSPITAL
40 BOR
41 BIA
49 UNKNOWN
50 US FISH AND WILDLIFE
62 NPS NATL REC AREA
63 NPS NATL SEASHORE
64 NPS NATL MONUMENT
65 NPS NATL PARK
70 BLM
80 USFS
91 PRIVATE
92 CONSERVANCY
95 PRIVATE PARK
96 PRIVATE IN NPS
OC5: Integer version of OWNERCODE, to enable mathematical queries.
DATA DICTIONARY:
DATAFILE NAME: GOVTOWNA.AAT
RECORD LENGTH: 39
COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC
-------------------------------------------------------------
1 FNODE# 4 5 B -
5 TNODE# 4 5 B -
9 LPOLY# 4 5 B -
13 RPOLY# 4 5 B -
17 LENGTH 8 18 F 5
25 GOVTOWNA# 4 5 B -
29 GOVTOWNA-ID 4 5 B -
33 SOURCE 2 2 C -
35 ACC_LEVEL 1 1 C -
36 UPDATE 8 8 I -
FNODE# : The id number of the node feature that represents
the beginning point (the From NODE) of the arc.
TNODE# : The id number of the node feature that represents
the ending point (To NODE) of the arc.
LPOLY# : The