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Floodplain Portage County, WI 2021

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
Email
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://web.s3.wisc.edu/rml-gisdata/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
Email
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
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