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Floodplain Portage County, WI 2021
- Identification Information
- Spatial Reference Information
- Data Quality Information
- Distribution Information
- Spatial Representation Information
- Metadata Reference Information
Identification Information
- Citation
- Title
- Floodplain Portage County, WI 2021
- Originator
- Portage County
- Publication Date
- 2021-10-20
- Edition
- 2021
- Geospatial Data Presentation Form
- mapDigital
- Abstract
- This data layer represents floodplain for Portage County, Wisconsin in 2021.[The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Management Agency (FEMA), and any Letters Of Map Revision (LOMRs) that have been issued against those databases since their publication date. It is updated on a monthly basis. The FIRM Database is the digital, geospatial version of the flood hazard information shown on the published paper FIRMs. The FIRM Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The FIRM Database is derived from Flood Insurance Studies (FISs), previously published FIRMs, flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by FEMA. The NFHL is available as State or US Territory data sets. Each State or Territory data set consists of all FIRM Databases and corresponding LOMRs available on the publication date of the data set. The specification for the horizontal control of FIRM Databases is consistent with those required for mapping at a scale of 1:12,000. This file is georeferenced to the Earth's surface using the Geographic Coordinate System (GCS) and North American Dataum of 1983 (NSRS-2007).]
- Purpose
- This data is intended for reference and mapping purposes, and may be used for basic applications such as viewing, querying, and map output production, or to provide a basemap to support graphical overlays and analysis with other spatial data. [The FIRM is the basis for floodplain management, mitigation, and insurance activities for the National Flood Insurance Program (NFIP). Insurance applications include enforcement of the mandatory purchase requirement of the Flood Disaster Protection Act, which "... requires the purchase of flood insurance by property owners who are being assisted by Federal programs or by Federally supervised, regulated or insured agencies or institutions in the acquisition or improvement of land facilities located or to be located in identified areas having special flood hazards, " Section 2 (b) (4) of the Flood Disaster Protection Act of 1973. In addition to the identification of Special Flood Hazard Areas (SFHAs), the risk zones shown on the FIRMs are the basis for the establishment of premium rates for flood coverage offered through the NFIP. The FIRM Database presents the flood risk information depicted on the FIRM in a digital format suitable for use in electronic mapping applications. The FIRM Database serves to archive the information collected during the Flood Risk Project.]
- Supplemental Information
- This is an archived copy of the data held at UW-Madison. For access to the most current data available, please visit: https://www.co.portage.wi.us/department/planning-zoning/land-information-gis/maps-and-gis-data
- Temporal Extent
- Time Instant
- 2021-01-01T00:00:00
- Bounding Box
- West
- -89.845658
- East
- -89.222316
- North
- 44.685909
- South
- 44.243292
- ISO Topic Category
- inlandWaters
- boundaries
- Place Keyword
- Portage County
-
Wisconsin
- Place Keyword Thesaurus
- GNS
- Theme Keyword
-
Floodplain management
- Theme Keyword Thesaurus
- LCSH
- Resource Constraints
- Use Limitation
- [The hardcopy FIRM and FIRM Database and the accompanying FIS are the official designation of SFHAs and Base Flood Elevations (BFEs) for the NFIP. For the purposes of the NFIP, changes to the flood risk information published by FEMA may only be performed by FEMA and through the mechanisms established in the NFIP regulations (44 CFR Parts 59-78). These digital data are produced in conjunction with the hardcopy FIRMs and generally match the hardcopy map exactly. Acknowledgement of FEMA would be appreciated in products derived from these data.]
- Legal Constraints
- Use Limitation
- Although this data is being distributed by the University of Wisconsin-Madison, no warranty expressed or implied is made by the University as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the University in the use of this data, or related materials.
- Status
- completed
- Maintenance and Update Frequency
- unknown
- Language
- eng
- Credit
- Portage County
- Point of Contact
- Contact
- Portage County
- Delivery Point
- 1462 Strongs Ave
- City
- Stevens Point
- Administrative Area
- WI
- Postal Code
- 54481
- Country
- US
- hartmanj@co.portage.wi.us
- Phone
- 715-346-1211
Spatial Reference Information
- Reference System Identifier
- Code
- 8134
- Code Space
- EPSG
- Version
- 9.1(10.7.0)
Data Quality Information
- Quantitative Attribute Accuracy Report
- Absolute External Positional Accuracy
- Absolute External Positional Accuracy
- Lineage
- Process Step
- Description
- Provided access to archived data at UW-Madison.
- Process Date
- 2021-10-20T00:00:00
Distribution Information
- Format Name
- File Geodatabase Feature Class
- Format Version
- 10.1
- Distributor
- University of Wisconsin-Madison
- Distributor
- Portage County
- Online Access
- https://gisdata.wisc.edu/public/Portage_Floodplain_2021.zip
- Protocol
- WWW:DOWNLOAD-1.0-http--download
- Name
- GeoData@Wisconsin
- Function
- download
Spatial Representation Information
- Vector
- Topology Level
- geometryOnly
- Vector Object Type
- composite
- Vector Object Count
- 273
Metadata Reference Information
- Hierarchy Level
- dataset
- Metadata File Identifier
- 5D236C38-1170-4B48-9247-33872AA2A6E1
- Metadata Point of Contact
- Name
- Arthur H. Robinson Map Library
- Position Name
- Metadata Technician
- Delivery Point
- 550 N. Park Street
- City
- Madison
- Administrative Area
- WI
- Postal Code
- 53706
- Country
- US
- askmap@library.wisc.edu
- Phone
- (608) 262-1471
- Metadata Date Stamp
- 2021-10-20
- Metadata Standard Name
- ISO 19139 Geographic Information - Metadata - Implementation Specification
- Metadata Standard Version
- 2007
- Character Set
- utf8