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Flood Zones and Floodways: Humboldt County, California, 2015

Identification Information
Citation
Publication Date
20150101
Title
Flood Zones and Floodways: Humboldt County, California, 2015
Geospatial Data Presentation Form
vector digital data
Collection Title
Humboldt County, California GIS Maps and Data
Publication Information
Publication Place
Publisher
Humboldt County Planning and Building Department
Other Citation Details
Retrieved on Wednesday, October 5, 2015 from the Humboldt County GIS Data Download web page at http://www.humboldtgov.org/276/GIS-Data-Download .
Online Linkage
http://purl.stanford.edu/zc435wh8550
Abstract
This polygon shapefile depicts Modified Federal Emergency Management Agency (FEMA) Q3 Flood Data merged with Floodway Data. This coverage displays floodplain areas 100 (Zone=A) and 500 (Zone=B) year floods. These maps blank out federal and state owned lands so the flood hazard in (for instance) State or National Parks is not properly represented. Also depicts Floodway areas. The Q3 Flood Data are derived from the Flood Insurance Rate Maps (FIRMs) published by the FEMA. The file is georeferenced to the earth's surface using the geographic projection and the decimal degree coordinate system. The specifications for the horizontal control of Q3 Flood Data files are consistent with those required for mapping at a scale of 1:24000. These data have been modified by Humboldt County to better match other base datasets.
Purpose
The Humboldt County Planning and Building Department is responsible for protecting the public health, safety and welfare via building permit review and inspections consistent with California model codes as well as planning and development review and approval consistent with the county's General Plan. This Department oversees the Advance Planning Division, which is responsible for the Humboldt County's Geographic Information System (GIS) that is utilized by other County Departments; many federal, state and local agencies; and the general public. This coverage can be used for basic applications such as viewing, querying, and map output production, or to provide a basemap to support graphical overlays and analyses of geospatial data.
Supplemental Information
FEMA Digital Q3 Flood data merged with Floodway. Shows floodplain areas for 100 (Zone=A) and 500 Zone=B) year floods as identified by Flood Insurance Rate (FIRM) maps. These maps blank out federal and state owned lands so the flood hazard in (for instance) State or National Parks is not properly represented. Also depicts Floodway areas. Updates/History/Corrections: Edited September, 2001: Redwood and Prairie Creeks have been corrected using USGS Digital Orthophoto Quarter Quads Edited March, 2002, to correct alignment problems, particularly along the coast. Alderpoint, Briceland and Blue Lake areas also edited. March 2006: Added Floodway Zones: Floodways are high velocity areas within the flood plains where generally no structures are permitted. Digitized by Eric Zoellner, Humboldt County Planing Div., from FEMA hardcopy Floodway maps. City, state and Federal jurisdictions blanked out. Primarily for planning purposes. For regulatory purposes, use hardcopy maps. Added Floodway "Yes" for attribute floodway so that it can be identified. Updated Firm_panel attribute to incorporate FEMA map panels associated with Floodway.
Temporal Extent
Currentness Reference
publication date
Time Instant
20150101
Bounding Box
West
-124.445595
East
-123.383801
North
41.474417
South
39.988026
Theme Keyword
Hazard mitigation
Flood control
Floodplains
Flood insurance
Theme Keyword Thesaurus
lcsh
Theme Keyword
boundaries
inlandWaters
Theme Keyword Thesaurus
ISO 19115 Topic Categories
Place Keyword
Humboldt County (Calif.)
Place Keyword Thesaurus
geonames
Temporal Keyword
2015
Temporal Keyword Thesaurus
None
Access Restrictions
None
Use Restrictions
The County of Humboldt makes no guarantee of the quality or completeness of this data. It has not been fully reviewed for accuracy and is intended to be used for planning purposes only. The department assumes no liability or responsibility in the use 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. In the event of any difference or error, the law will take precedence. The accuracy of map data varies from location to location in the county. While the GIS is useful for planning purposes, it 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.
Maintenance and Update Frequency
Unknown
Point of Contact
Contact Organization
Humboldt County Planning and Building Department
Delivery Point
Advance Planning Division
Delivery Point
3015 H St.
City
Eureka
State
California
Postal Code
95501
Country
US
Contact Telephone
707-268-3776
Contact Telephone
707-445-7541
Contact Electronic Mail Address
jvondohlen@co.humboldt.ca.us
Native Data Set Environment
Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.2.2.3552
Collection
Title
Humboldt County, California GIS Maps and Data
Spatial Data Organization Information
Direct Spatial Reference Method
Vector
Point and Vector Object Information
SDTS Terms Description
SDTS Point and Vector Object Type
GT-polygon composed of chains
Point and Vector Object Count
852
Entity and Attribute Information
Entity Type
Entity Type Label
floodsp4
Attributes
FID
Internal feature number. (Sequential unique whole numbers that are automatically generated.)
Definition Source
Esri
Shape
Feature geometry. (Coordinates defining the features.)
Definition Source
Esri
AREA
PERIMETER
FLOODSPS_
FLOODSPS_I
FIPS
COMMUNITY
FIRM_PANEL
QUAD
ZONE
FLOODWAY
COBRA
SFHA
SYMBOL
PANEL_TYP
ACRES
CASE_NO_
Distribution Information
Distributor
Stanford Geospatial Center
Name
Metadata Reference Information
Metadata Date
20151012
Metadata Contact
Contact Information
Contact Organization Primary
Contact Organization
Stanford Geospatial Center
Contact Position
Metadata Analyst
Contact Address
Address
Branner Earth Sciences Library
Address
397 Panama Mall, Mitchell Bldg., 2nd Flr.
City
Stanford
State or Province
California
Postal Code
94305
Country
US
Contact Voice Telephone
650-723-2746
Contact Electronic Mail Address
brannerlibrary@stanford.edu
Metadata Standard Name
FGDC Content Standard for Digital Geospatial Metadata
Metadata Standard Version
FGDC-STD-001-1998

Flood Zones and Floodways: Humboldt County, California, 2015

Identification Information

Citation
Title
Flood Zones and Floodways: Humboldt County, California, 2015
Publisher
Humboldt County Planning and Building Department
Place of Publication
Eureka , California , US
Publication Date
2015-01-01
Identifier
http://purl.stanford.edu/zc435wh8550
Geospatial Data Presentation Form
mapDigital
Collection Title
Humboldt County, California GIS Maps and Data
Other Citation Details
Retrieved on Wednesday, October 5, 2015 from the Humboldt County GIS Data Download web page at http://www.humboldtgov.org/276/GIS-Data-Download .
Abstract
This polygon shapefile depicts Modified Federal Emergency Management Agency (FEMA) Q3 Flood Data merged with Floodway Data. This coverage displays floodplain areas 100 (Zone=A) and 500 (Zone=B) year floods. These maps blank out federal and state owned lands so the flood hazard in (for instance) State or National Parks is not properly represented. Also depicts Floodway areas. The Q3 Flood Data are derived from the Flood Insurance Rate Maps (FIRMs) published by the FEMA. The file is georeferenced to the earth's surface using the geographic projection and the decimal degree coordinate system. The specifications for the horizontal control of Q3 Flood Data files are consistent with those required for mapping at a scale of 1:24000. These data have been modified by Humboldt County to better match other base datasets.
Purpose
The Humboldt County Planning and Building Department is responsible for protecting the public health, safety and welfare via building permit review and inspections consistent with California model codes as well as planning and development review and approval consistent with the county's General Plan. This Department oversees the Advance Planning Division, which is responsible for the Humboldt County's Geographic Information System (GIS) that is utilized by other County Departments; many federal, state and local agencies; and the general public. This coverage can be used for basic applications such as viewing, querying, and map output production, or to provide a basemap to support graphical overlays and analyses of geospatial data.
Supplemental Information
FEMA Digital Q3 Flood data merged with Floodway. Shows floodplain areas for 100 (Zone=A) and 500 Zone=B) year floods as identified by Flood Insurance Rate (FIRM) maps. These maps blank out federal and state owned lands so the flood hazard in (for instance) State or National Parks is not properly represented. Also depicts Floodway areas. Updates/History/Corrections: Edited September, 2001: Redwood and Prairie Creeks have been corrected using USGS Digital Orthophoto Quarter Quads Edited March, 2002, to correct alignment problems, particularly along the coast. Alderpoint, Briceland and Blue Lake areas also edited. March 2006: Added Floodway Zones: Floodways are high velocity areas within the flood plains where generally no structures are permitted. Digitized by Eric Zoellner, Humboldt County Planing Div., from FEMA hardcopy Floodway maps. City, state and Federal jurisdictions blanked out. Primarily for planning purposes. For regulatory purposes, use hardcopy maps. Added Floodway "Yes" for attribute floodway so that it can be identified. Updated Firm_panel attribute to incorporate FEMA map panels associated with Floodway.
Temporal Extent
Currentness Reference
publication date
Time Instant
2015-01-01T00:00:00
Bounding Box
West
-124.445595
East
-123.383801
North
41.474417
South
39.988026
ISO Topic Category
boundaries
inlandWaters
Place Keyword
Humboldt County (Calif.)
Place Keyword Thesaurus
geonames
Temporal Keyword
2015
Theme Keyword
Hazard mitigation
Flood control
Floodplains
Flood insurance
Theme Keyword Thesaurus
lcsh
Resource Constraints
Use Limitation
The County of Humboldt makes no guarantee of the quality or completeness of this data. It has not been fully reviewed for accuracy and is intended to be used for planning purposes only. The department assumes no liability or responsibility in the use 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. In the event of any difference or error, the law will take precedence. The accuracy of map data varies from location to location in the county. While the GIS is useful for planning purposes, it 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.
Maintenance and Update Frequency
unknown
Collection
Collection Title
Humboldt County, California GIS Maps and Data
URL
http://purl.stanford.edu/zc242vz4054
Language
eng
Point of Contact
Contact
von Dohlen, Jerry
Position Name
GIS Analyst
Delivery Point
Advance Planning Division
City
Eureka
Administrative Area
California
Postal Code
95501
Country
US
Email
jvondohlen@co.humboldt.ca.us
Phone
707-268-3776

Spatial Reference Information

Reference System Identifier
Code
26741
Code Space
EPSG
Version
8.2.6

Data Quality Information

Distribution Information

Format Name
Shapefile
Distributor
Stanford Geospatial Center
Online Access
http://purl.stanford.edu/zc435wh8550
Protocol
http
Name
floodsp4.shp
Function
download

Content Information

Feature Catalog Description
Compliance Code
false
Language
eng
Included With Dataset
true
Feature Catalog Citation
Title
Feature catalog for Flood Zones and Floodways: Humboldt County, California, 2015
Feature Catalog Identifier
7f39b7d9-69e7-42d4-b45a-fbd46e296ba9

Spatial Representation Information

Vector
Topology Level
geometryOnly
Vector Object Type
composite
Vector Object Count
852

Metadata Reference Information

Hierarchy Level
dataset
Metadata File Identifier
edu.stanford.purl:zc435wh8550
Parent Identifier
http://purl.stanford.edu/zc242vz4054.mods
Dataset URI
http://purl.stanford.edu/zc435wh8550
Metadata Date Stamp
2015-10-12
Metadata Standard Name
ISO 19139 Geographic Information - Metadata - Implementation Specification
Metadata Standard Version
2007
Character Set
utf8
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