Areas of Potential Liquefaction

Data format: Shapefile

File or table name: saf_zones_liqfctn

Coordinate system: State Plane Coordinate System 1927

Theme keywords: Humboldt County, Seismic Safety, Slope Stability, Geology

Abstract: Areas of Potential Liquefaction from Slope Stability Zones for Humboldt Bay and Vicinity. Digitized using Humboldt County General Plan Seismic Safety Maps - Humboldt Bay and Vicinity, North and South Sheets; July 1979.

FGDC and ESRI Metadata:

Metadata elements shown with blue text are defined in the Federal Geographic Data Committee's (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM). Elements shown with green text are defined in the ESRI Profile of the CSDGM. Elements shown with a green asterisk (*) will be automatically updated by ArcCatalog. ArcCatalog adds hints indicating which FGDC elements are mandatory; these are shown with gray text.

Identification Information:


Citation:
Citation information:
Originators: Humboldt County Community Development Services


Title:
Areas of Potential Liquefaction
*File or table name: saf_zones_liqfctn


Publication date: REQUIRED: The date when the data set is published or otherwise made available for release.
*Geospatial data presentation form: vector digital data


*Online linkage: \\Snap550020\SNAPGIS\GIS1\hazards\geology\saf_zones_liqfctn.shp


Description:
Abstract:
Areas of Potential Liquefaction from Slope Stability Zones for Humboldt Bay and Vicinity.  Digitized using Humboldt County General Plan Seismic Safety Maps - Humboldt Bay and Vicinity, North and South Sheets; July 1979.

Purpose:
To be used as a general guide of Slope Stability Zones for Humboldt Bay and Vicinity

Supplemental information:
Metadata textfile for ..\gis1\hazards\geology\saf_zonesutm shapefile  12-12-2003


Slope Stability Zones for Humboldt Bay and Vicinity.	Digitized using Humboldt County General Plan Seismic Safety Maps - 
Humboldt Bay and Vicinity, North and South Sheets; July 1979. Original map scale: 1 inch = 2,000 feet. 
Data may not be accurate for large scale overlays.


Slope Stability - attribute ZONE

A = Deep alluvium with recent deposits at surface
B = Deep alluvium with older deposits at surface
C = Shallow alluvium with recent deposits at surface
D = Shallow alluvium with older deposits at surface
E = Bedrock

		- attribute SLP_STB

3 = High Instability
2 = Moderate Instability
1 = Low Instability
0 = Relatively Stable

		- attribute LIQFCTN
		
Y = Area of Potential Liquefaction


Digitizing work done by Humboldt County Community Development Services staff December 2003.

Data was registered to UTM Zone 10 NAD27 Units Meters.

Contact Information:
Chinmaya Lewis or Tom Hofweber
Humboldt County Community Development Services
3015 H Street
Eureka, CA 95521
707-268-3737
clewis@co.humboldt.ca.us

*Language of dataset: en


Time period of content:
Time period information:
Single date/time:
Calendar date: REQUIRED: The year (and optionally month, or month and day) for which the data set corresponds to the ground.

Currentness reference:
REQUIRED: The basis on which the time period of content information is determined.

Status:
Progress: REQUIRED: The state of the data set.
Maintenance and update frequency: REQUIRED: The frequency with which changes and additions are made to the data set after the initial data set is completed.

Spatial domain:
Bounding coordinates:
*West bounding coordinate: -124.392021
*East bounding coordinate: -123.988559
*North bounding coordinate: 41.033913
*South bounding coordinate: 40.503412

Local bounding coordinates:
*Left bounding coordinate: 1340117.013174
*Right bounding coordinate: 1447134.391395
*Top bounding coordinate: 625826.737531
*Bottom bounding coordinate: 435183.339210

Keywords:
Theme:
Theme keywords: Humboldt County, Seismic Safety, Slope Stability, Geology
Theme keyword thesaurus: REQUIRED: Reference to a formally registered thesaurus or a similar authoritative source of theme keywords.

Access constraints: None.
Use constraints:
Humboldt County Community Development Services (HCCDS) makes no guarantee of the accuracy or completeness of this data.  It has not been fully reviewed for accuracy and is intended to be used for planning purposes only.  HCCDS assumes no liability or responsibility in the use,  or misuse, of this data.  While every effort has been made to assure the accuracy of this information, it should be understood that it does not have the force and effect of law, rule, or regulation. Should any difference or error occur, the law will take precedence.

Point of contact:
Contact information:
Contact person primary:
Contact person: Chinmaya Lewis
Contact organization: County Community Development Services
Contact position: GIS Coordinator


Contact address:
Address type: mailing and physical address
Address:
3015 H Street
City: Eureka
State or province: CA
Postal code: 95501

Contact voice telephone: 707-268-3737
Contact facsimile telephone: 707-445-7446


Contact electronic mail address: clewis@co.humboldt.ca.us


Hours of service: 8:30am - 5pm M-F



Data set credit:
Humboldt County GIS

*Native dataset format: Shapefile
*Native data set environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.780


Back to Top
Data Quality Information:


Positional accuracy:
Horizontal positional accuracy:
Horizontal positional accuracy report:
None.

Quantitative horizontal positional accuracy assessment:
Horizontal positional accuracy explanation:
Please note the accuracy of GIS map data varies from location to location in the County. This GIS system is useful for planning purposes but should not be relied upon to determine property, zoning or general plan designation boundaries or be used in any way for project design. All GIS data should be verified before it is materially relied upon for property or project planning. In urban areas the GIS map data maybe inaccurate by as much as 50 feet in any direction. In rural areas the map data may be inaccurate by as much as 400 feet in any direction.  This is a general accuracy disclaimer.  Data may be more or less accurate depending on source informaton and digitizing methods.

Lineage:
Process step:
Process description:
Metadata imported.

Source used citation abbreviation:
h:\gis1\emptymetadata.xml


Back to Top
Spatial Data Organization Information:


*Direct spatial reference method: Vector


Point and vector object information:
SDTS terms description:
*Name: saf_zones_liqfctn
*SDTS point and vector object type: G-polygon
*Point and vector object count: 50

ESRI terms description:
*Name: saf_zones_liqfctn
*ESRI feature type: Simple
*ESRI feature geometry: Polygon
*ESRI topology: FALSE
*ESRI feature count: 50
*Spatial index: TRUE
*Linear referencing: FALSE


Back to Top
Spatial Reference Information:


Horizontal coordinate system definition:
Coordinate system name:
*Projected coordinate system name: NAD_1927_StatePlane_California_I_FIPS_0401
*Geographic coordinate system name: GCS_North_American_1927

Planar:
Grid coordinate system:
*Grid coordinate system name: State Plane Coordinate System 1927
State Plane Coordinate System:
*SPCS zone identifier: 401
Lambert conformal conic:
*Standard parallel: 40.000000
*Standard parallel: 41.666667
*Longitude of central meridian: -122.000000
*Latitude of projection origin: 39.333333
*False easting: 2000000.000000
*False northing: 0.000000

Planar coordinate information:
*Planar coordinate encoding method: coordinate pair
Coordinate representation:
*Abscissa resolution: 0.000512
*Ordinate resolution: 0.000512
*Planar distance units: survey feet

Geodetic model:
*Horizontal datum name: North American Datum of 1927
*Ellipsoid name: Clarke 1866
*Semi-major axis: 6378206.400000
*Denominator of flattening ratio: 294.978698

Back to Top
Entity and Attribute Information:


Detailed description:
*Name: saf_zones_liqfctn


Entity type:
*Entity type label: saf_zones_liqfctn
*Entity type type: Feature Class
*Entity type count: 50

Attribute:
*Attribute label: FID
*Attribute alias: FID
*Attribute definition:
Internal feature number.
*Attribute definition source:
ESRI

*Attribute type: OID
*Attribute width: 4
*Attribute precision: 0
*Attribute scale: 0


Attribute domain values:
*Unrepresentable domain:
Sequential unique whole numbers that are automatically generated.


Attribute:
*Attribute label: Shape
*Attribute alias: Shape
*Attribute definition:
Feature geometry.
*Attribute definition source:
ESRI

*Attribute type: Geometry
*Attribute width: 0
*Attribute precision: 0
*Attribute scale: 0


Attribute domain values:
*Unrepresentable domain:
Coordinates defining the features.


Attribute:
*Attribute label: AREA
*Attribute alias: AREA


*Attribute type: Number
*Attribute width: 13
*Attribute number of decimals: 6


Attribute:
*Attribute label: PERIMETER
*Attribute alias: PERIMETER


*Attribute type: Number
*Attribute width: 13
*Attribute number of decimals: 6


Attribute:
*Attribute label: ZONE
*Attribute alias: ZONE


*Attribute type: String
*Attribute width: 6


Attribute:
*Attribute label: SLP_STB
*Attribute alias: SLP_STB


*Attribute type: String
*Attribute width: 6


Attribute:
*Attribute label: LIQFCTN
*Attribute alias: LIQFCTN


*Attribute type: String
*Attribute width: 10


Attribute:
*Attribute label: SHEARZONE
*Attribute alias: SHEARZONE


*Attribute type: String
*Attribute width: 1


Back to Top
Distribution Information:


Distributor:
Contact information:
Contact person primary:
Contact person: Chinmaya Lewis
Contact organization: Humboldt County Community Development Services
Contact position: GIS Coordinator


Contact address:
Address type: mailing and physical address
Address:
3015 H Street
City: Eureka
State or province: CA
Postal code: 95501

Contact voice telephone: 707-268-3737
Contact facsimile telephone: 707-445-7446


Contact electronic mail address: clewis@co.humboldt.ca.us


Hours of service: 8:30am - 5pm M-F



Resource description: Downloadable Data


Standard order process:
Digital form:
Digital transfer information:
*Transfer size: 0.351
*Dataset size: 0.351

Ordering instructions:
http://co.humboldt.ca.us/planning/maps/datainventory/gisdatalist.asp


Technical prerequisites:
Internet Connection and Web Browser. Decompression software (i.e. Winzip, Winrar)


Back to Top
Distribution Information:


Distributor:
Contact information:
Contact person primary:
Contact person: Tom Howeber
Contact organization: Humboldt County Community Development Services
Contact position: Supervising Planner


Contact voice telephone: 707-268-3738
Contact facsimile telephone: 707-445-7446


Contact electronic mail address: thofweber@co.humboldt.ca.us


Standard order process:
Digital form:
Digital transfer information:
Transfer size: 0.000
Dataset size: 0.000

Ordering instructions:
E-mail distributor with data requests or go to website:  http://co.humboldt.ca.us/planning/maps


Back to Top
Metadata Reference Information:


*Metadata date: 20070103


*Language of metadata: en


Metadata contact:
Contact information:
Contact organization primary:
Contact person: Chinmaya Lewis
Contact organization: Humboldt County Community Development Services
Contact position: GIS Coordinator


Contact address:
Address type: mailing and physical address
Address:
3015 H Street
City: Eureka
State or province: CA
Postal code: 95501

Contact voice telephone: 707-268-3737
Contact facsimile telephone: 707-445-7446


Contact electronic mail address: clewis@co.humboldt.ca.us


Hours of service: 8:30am - 5pm M-F



*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

Back to Top
Geoprocessing History:


Process:
*Process name: Select_1
*Date: 20070103
*Time: 112553
*Tool location: C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Analysis Tools.tbx\Select
*Command issued: Select H:\GIS1\hazards\geology\saf_zones.shp H:\GIS1\hazards\geology\saf_zones_liqfctn.shp ""LIQFCTN" = 'Y'"


Back to Top
Binary Enclosures:


Thumbnail:
Enclosure type: Picture



Back to Top