DIGITAL FLOOD INSURANCE RATE MAP DATABASE, JUNEAU COUNTY, WISCONSIN, USA

Resource lineage description

source

source description  Source Contribution: Spatial and attribute information for water areas and lines.Source Type Local Network

representative resolution scale:

Scale denominator: 24000

source citation

Title Wisconsin Rivers and Shorelines

publication  Date   2007-06-01

presentationForm  DIGITAL VECTOR DATA

other Citation Details  This data contains hydrogaphy data from 1:24,000 scale sources. The data includes features represented on the US Geological Survey's 1:24,000 scale topographic map series.

cited responsible party - publisher

organisation Name  Wisconsin Department of Natural Resources

Contact information

Address

, Madison, WI

cited responsible party - originator

organisation Name  Wisconsin Department of Natural Resources

source

source description  Source Contribution: Spatial and attribute information for permanent benchmarks.Source Type Online

representative resolution scale:

Scale denominator: 12000

source citation

Title Permanent Bench Mark Data Sheets

publication  Date   2004-01-01

presentationForm  DIGITAL VECTOR DATA

other Citation Details  Geodetic data comprise the results of geodetic surveys to determine among other things, latitude, longitude, height, scale, and orientation control. The NGS' final product is the geodetic data sheet. Geodetic data sheets are comprehensive summaries of all the published information for a given geodetic reference point, including: the geographic position and/or height based on the current reference datum, condition of the survey mark when it was last visited, a description of where the point is located and how to reach it, and an explanation of the terms used in the data sheet.

cited responsible party - publisher

organisation Name  National Geodetic Survey

Contact information

Address

, Silver Spring, MD

cited responsible party - originator

organisation Name  National Geodetic Survey

source

source description  Source Contribution: Spatial and attribute information for the index of USGS 7.5-Minute Series Topographic Map boundaries.Source Type Flood Mapping Desktop Tool

representative resolution scale:

Scale denominator: 24000

source citation

Title USGS 7.5-Minute Series Topographic Maps

publication  Date   1989-01-01

presentationForm  DIGITAL VECTOR DATA

other Citation Details  USGS has mapped the county with 1:24000 scale topographic maps (also referred to as 7.5-minute quadrangles). From the raster topographic maps, a vector index of the USGS topographic maps with its corresponding tile identification number and name was created.

cited responsible party - publisher

organisation Name  U.S. Geological Survey

Contact information

Address

, Reston, VA

cited responsible party - originator

organisation Name  U.S. Geological Survey

source

source description  Source Contribution: Spatial and attribute information for PLSS areas and boundaries.Source Type local network/CD-ROM

representative resolution scale:

Scale denominator: 24000

source citation

Title PLSS Lines and Area for Juneau Countywide Study

publication  Date   2004-01-01

presentationForm  DIGITAL VECTOR DATA

other Citation Details  The PLSS lines and areas for Juneau County were derived from a subset of the Wisconsin DNR's (WDNR) 'Landnet' database and combined with a WDNR 24K County Boundaries layer.

cited responsible party - publisher

organisation Name  Wisconsin Department of Natural Resources

Contact information

Address

, Madison, WI

cited responsible party - originator

organisation Name  Wisconsin Department of Natural Resources

source

source description  Source Contribution: Spatial and attribute information for local roads, airports and railroads.Source Type CD-ROM and local network

representative resolution scale:

Scale denominator: 100000

source citation

Title Roads for Juneau Countywide Study

publication  Date   2007-01-01

presentationForm  DIGITAL VECTOR DATA

other Citation Details  S_TRNSPORT_LN was derived from a combination of the WI DOT WHISLR07 layer, the WDNR maintained statewide inventories of railroads and airports and a roads layer provided by Juneau County.

cited responsible party - publisher

organisation Name  Wisconsin Department of Natural Resources

Contact information

Address

, Madison, WI

cited responsible party - originator

organisation Name  Wisconsin Department of Natural Resources

source

source description  Source Contribution: Spatial and attribute information for municipal boundaries.Source Type New

representative resolution scale:

Scale denominator: 24000

source citation

Title Municipal Boundaries for Juneau Countywide Study

publication  Date   2008-01-01

presentationForm  DIGITAL VECTOR DATA

other Citation Details  Political lines and areas were derived from a combination of Juneau County data and WDNR 24K County Boundaries.

cited responsible party - publisher

organisation Name  Wisconsin Department of Natural Resources

Contact information

Address

, Madison, WI

cited responsible party - originator

organisation Name  Wisconsin Department of Natural Resources

source

source description  Source Contribution: Spatial and attribute information for municipal boundaries.Source Type New

representative resolution scale:

Scale denominator: 24000

source citation

Title Municipal Boundaries for Juneau Countywide Study

publication  Date   2008-01-01

presentationForm  DIGITAL VECTOR DATA

other Citation Details  Political lines and areas were derived from Ho-Chunk Nation data.

cited responsible party - publisher

organisation Name  Wisconsin Department of Natural Resources

Contact information

Address

, Madison, WI

cited responsible party - originator

organisation Name  Wisconsin Department of Natural Resources

source

source description  Source Contribution: S_FLD_HAZ_AR, S_FLD_HAZ_LN, S_BFE, S_XS, S_WTR_LN, S_GEN_STRUCTSource Type digital vector data

representative resolution scale:

Scale denominator: 1200

source citation

Title Flood Insurance Study Detailed Study (AE Zone) Modeling and Mapping, Juneau County and Incorporated Areas, WI

publication  Date   2012-02-13

presentationForm  DIGITAL VECTOR DATA

other Citation Details  Mapping for this revision is based on new detailed studies. For the following detailed study streams flows were determined using the Hydrologic Engineering Center?s Hydrologic Modeling System (HEC-HMS) computer software, version 3.1 and compared to calculated regression flows for the basin of interest as well as with similar gauged basins: Baraboo River (eastern portion from confluence with the West Branch Baraboo River to the county boundary), Baraboo River Split Flow, West Branch Baraboo Rive, West Branch Baraboo River Split Flow 1 and West Branch Baraboo River Split Flow 2. For each subbasin, runoff Curve Numbers (CNs) were estimated using 1992 Wisconsin Initiative for Statewide Cooperation of Landscape Analysis and Data (WISCLAND) landuse data and Soil Survey Geographic Database (SSURGO) soils data. Times of concentration were estimated using the TR-55 flowpath segment method. Floodplain storage was taken into account where permanent water bodies existed, such as ponds, lakes, or manmade detention structures, or where there were significant wetlands identified in the Wisconsin Wetland Inventory. The rainfall distribution used was developed by the WDNR and is based on recorded storms 2 inches and larger from 1975 to 2003 at gages around the state. Multiple storm durations ranging from 3-hours to 10-days were evaluated to determine which produced the critical (largest) flow for the area of interest. This critical duration was determined to be 48-hours for the Baraboo watershed. Stream hydraulics were modeled using HEC-RAS (V4.1). The HEC-RAS models were created using the HECGeoRAS (V4.3.93) extension for ArcMap (V9.3). The 10-, 50-, 100-, 500- and floodway run showing zero rise were determined. The hydrology and hydraulics were alos calibrated to the June 2008 flood event. Cross-section information in the model was derived by field surveys in winter 2009/2010 at various locations throughout the reach to provide stream overbank, stream bottom, bridge face, and road profile information. Roughness coefficients are based on ground conditions at the time of survey and estimates from the available orthoimagery. Note, this source citation covers cross-sections/BFEs/general structures/profile baselines/floodplains for new detailed studies and BFEs/floodplains for redelineated floodlpains. Cross-sections for redelineated floodplains are contained within their corresponding FIRM No. source citations.

cited responsible party - publisher

organisation Name  Wisconsin Department of Natural Resources

Contact information

Address

, Madison, WI

cited responsible party - originator

organisation Name  Wisconsin Department of Natural Resources

source

source description  Source Contribution: Spatial/attribute information for floodplain/floodway limits.Source Type digital vector data

representative resolution scale:

Scale denominator: 1000

source citation

Title Flood Insurance Study Detailed Study (AE Zone) Redelineation, Juneau County and Incorporated Areas, WI

publication  Date   2012-02-13

presentationForm  DIGITAL VECTOR DATA

other Citation Details  Mapping for this revision is based on re-delineation of current effective studies. Elevations for re-delineated streams are based on the Juneau County, Wisconsin and Incorporated Areas Flood Insurance Studies (FIS) and Flood Insurance Rate Maps (FIRM) from September 18, 1991. Note, this source citation covers flood hazard lines and areas for redelineated floodlpains. Cross-sections and general structures for redelineated floodplains are contained within their corresponding FIS No. source citations. Profile baselines and BFEs for redelineated floodplains are contained within their corresponding FIRM No. source citations. The existing profile shown in the current effective FIS was warped based on known fixed locations such as structures and limits of study to fit the profile baseline (where a profile baseline was not explicitly identified, the stream centerline shown was used) delineated on the current effective FIS. Where physically possible and reasonable, the existing floodway boundaries were maintained within the re-delineated floodplain boundaries. In cases where the floodway did not match the effective model, the floodway was further adjusted. Hydrologic and hydraulic analyses performed are detailed in the FIS report. The results of these studies are submitted in digital format to FEMA. The unrevised data from effective flood insurance studies were compiled onto the base map used for DFIS publication and checked for accuracy and compliance with FEMA standards. In all instances, the 100-yr and 500-yr floodplain boundaries were mapped on TINs generated from 5' DEMs derived from the County LiDAR data. The resulting floodfringe was smoothed using the PAEK method at a 65.6 foot (20-meter) tolerance. During the appeal and comments process, a survey done by MSA was submitted and incorporated that changed the linework for the Old Channel wisconsin River. A stamped survey map with .1' vertical accuracy was provided. The digital representation of the survey map was submitted in the TSDN. This data and unrevised data from effective flood insurance studies were compiled onto the base map used for DFIS publication and checked for accuracy and compliance with FEMA standards.

cited responsible party - publisher

organisation Name  Wisconsin Department of Natural Resources

Contact information

Address

, Madison, WI

cited responsible party - originator

organisation Name  Wisconsin Department of Natural Resources

source

source description  Source Contribution: S_FLD_HAZ_ARSource Type digital vector data

representative resolution scale:

Scale denominator: 1200

source citation

Title Flood Insurance Study Approximate Study (A Zone) Modeling and Mapping, Juneau County and Incorporated Areas, WI

publication  Date   2011-03-07

presentationForm  DIGITAL VECTOR DATA

other Citation Details  Approximate (Zone A) studies were completed for Juneau County streams using limited detail study engineering techniques. Hydrology for studied streams was determined using the best available information. For the Baraboo River downstream of Elroy, flows were taken from the 2010 detailed hydrology. For the rest of the streams, flows were determined using the ArcHydro Tools extension in ArcGIS which uses the 2003 regression equations created by the USGS. For all streams studied, HEC-RAS (V4.1) hydraulic models were created using the HECGeoRAS (V4.3.93) extension for ArcMap (V9.3). Cross-section information in the model was derived by cutting cross-sections from the 5? cell grids generated from LiDAR data provided by Juneau County. Structures (bridges, culverts) were modeled based on WiDOT or WDNR as-built plans when available. If bridge/culvert plans were not available, they were modeled by estimating bridge deck width and openings based on the 2010 Juneau County Orthoimagery, top of road elevations were estimated based on the Juneau County LiDAR data. Manning?s N values were estimated by viewing the available orthoimagery and manning?s N polygon layer. This layer is derived from a vector representation of the Wiscland land cover grid, which categorizes land cover types based on LANDSAT TM satellite imagery acquired in 1991 through 1993. For approximate modeling purposes, WDNR assigned conservative Manning's N values to each of the major land cover categories. The 100-yr floodplain boundaries were mapped on 5? cell grids generated from the County LiDAR data. The resulting floodplain was further smoothed using the PAEK smoothing algorithm in ArcToolbox. This data was compiled onto the base map used for DFIS publication and checked for accuracy and compliance with FEMA standards.

cited responsible party - publisher

organisation Name  Wisconsin Department of Natural Resources

Contact information

Address

, Madison, WI

cited responsible party - originator

organisation Name  Wisconsin Department of Natural Resources

source

source description  Source Contribution: Spatial and attribute information for Zone X areas.Source Type digital vector data

representative resolution scale:

Scale denominator: 6000

source citation

Title Flood Insurance Study Zone X Mapping, Juneau County and Incorporated Areas, WI

publication  Date   2012-02-13

presentationForm  DIGITAL VECTOR DATA

other Citation Details  Polygons were created in the S_FLD_HAZ_AR layer for all areas within the county boundary that were outside of the 1% or 0.2% annual chance flood hazard areas. These areas are designated Zone X and are not considered to be within a special flood hazard area.

cited responsible party - publisher

organisation Name  Wisconsin Department of Natural Resources

Contact information

Address

, Madison, WI

cited responsible party - originator

organisation Name  Wisconsin Department of Natural Resources

source

source description  Source Contribution: Spatial and attribute information for the Base Index.Source Type Flood Map Desktop Tool

source citation

Title Base Index for Juneau Countywide Study

publication  Date   2011-03-07

other Citation Details  Extent of the digital ortho photo (DOP) base layer. This layer was created within the Flood Map Desktop tool for ArcMap.

cited responsible party - publisher

organisation Name  Wisconsin Department of Natural Resources

Contact information

Address

, Madison, WI

cited responsible party - originator

organisation Name  Wisconsin Department of Natural Resources

source

source description  Source Contribution: Spatial and attribute information for FIRM panel boundaries.Source Type FLood Map Desktop Tool

source citation

Title FIRM Panel Index for Juneau Countywide Study

publication  Date   2011-03-07

other Citation Details  This layer was created within the Flood Map Desktop tool for ArcMap.

cited responsible party - publisher

organisation Name  Wisconsin Department of Natural Resources

Contact information

Address

, Madison, WI

cited responsible party - originator

organisation Name  Wisconsin Department of Natural Resources

source

source description  Source Contribution: Spatial/attribute information and BFE/cross-section/profile baseline location.Source Type digital vector data

representative resolution scale:

Scale denominator: 1200

source citation

Title Oconto River Letter of Map Revision (LOMR) 99-05-004P

publication  Date   1992-03-11

presentationForm  DIGITAL VECTOR DATA

other Citation Details  The FIS and FIRM for Juneau County, Wisconsin, and Incorporated Areas, have been revised by this Letter of Map Revision (LOMR) to reflect and updated hydraulic analysis of hte Baraboo River. The revised area is located entirely within the City of ELroy. The March 21, 1998 WSPRO hydraulic backwater model for the Baraboo River was used to prepare the September 1991 effective countywide FIS for Juneau County, as well as a revised WSPRO model, dated June 20, 1991, reflecing revised bridge analyses for the 100-year flood. Elevation data from the updated LOMR BFEs and cross-sections were used to redelineate the 100-yr floodplain boundaries in this area and were mapped on 5? cell grids generated from the County LiDAR data.

cited responsible party - publisher

organisation Name  Wisconsin Department of Natural Resources

Contact information

Address

, Madison, WI

cited responsible party - originator

organisation Name  Wisconsin Department of Natural Resources

source

source description  Source Contribution: Spatial and attribute information for profile baselines and BFEs.Source Type Digital TIF file

representative resolution scale:

Scale denominator: 24000

source citation

Title Effective FIRM, Juneau County, Wisconsin and Incorporated Areas

publication  Date   1991-09-18

presentationForm  DIGITAL VECTOR DATA

other Citation Details  The profile baselines for redelineated flood hazard areas were digitized from digital scans of the Effective FIRM Maps that were geo-referenced to the United States Geological Survey (USGS) 7.5" Quadrangle maps.

cited responsible party - publisher

organisation Name  Federal Emergency Management Agency

Contact information

Address

, Washington DC

cited responsible party - originator

organisation Name  Federal Emergency Management Agency

source

source description  Source Contribution: Spatial and attribute information for cross sections and general structures in re-delineated areas.Source Type paper

representative resolution scale:

Scale denominator: 6000

source citation

Title Flood Insurance Study Cross-sections/Profiles, Jueanu County, Wisconsin and Unincorporated Areas

publication  Date   1991-09-18

presentationForm  mapDigital

other Citation Details  Spatial and attribute information for cross sections and general structures were obtained/digitized based on the existing Juneau County FIS as well as the available effective models.

cited responsible party - publisher

organisation Name  Federal Emergency Management Agency

Contact information

Address

, Washington, DC

cited responsible party - originator

organisation Name  Federal Emergency Management Agency

AbsoluteExternalPositionalAccuracy

name Of Measure Horizontal Positional Accuracy Report

evaluation Method Description  The DFIRM Database consists of countywide vector files and associated attributes produced in conjunction with the hardcopy FEMA FIRM. The published effective FIRM and DFIRM are issued as the official designation of the SFHAs. As such they are adopted by local communities and form the basis for administration of the NFIP. For these purposes they are authoritative. Provisions exist in the regulations for public review, appeals and corrections of the flood risk information shown to better match real world conditions. As with any engineering analysis of this type, variation from the estimated flood heights and floodplain boundaries is possible. Details of FEMA's requirements for the FISs and flood mapping process that produces these data are available in the Guidelines and Specifications for Flood Hazard Mapping Partners. Horizontal accuracy was tested by manual comparison of source graphics with hardcopy plots and a symbolized display on an interactive computer graphic system. Independent quality control testing of FEMA's DFIRM database was also performed.

AbsoluteExternalPositionalAccuracy

name Of Measure Vertical Positional Accuracy Report

evaluation Method Description  The DFIRM Database consists of countywide vector files and associated attributes produced in conjunction with the hardcopy FEMA FIRM. The published effective FIRM and DFIRM maps are issued as the official designation of the SFHAs. As such they are adopted by local communities and form the basis for administration of the NFIP. For these purposes they are authoritative. Provisions exist in the regulations for public review, appeals and corrections of the flood risk information shown to better match real world conditions. As with any engineering analysis of this type, variation from the estimated flood heights and floodplain boundaries is possible. Details of FEMA's requirements for the FISs and flood mapping process that produces these data are available in the Guidelines and Specifications for Flood Hazard Mapping Partners. Vertical accuracy was tested by manual comparison of source graphics with hardcopy plots and a symbolized display on an interactive computer graphic system. Independent quality control testing of FEMA's DFIRM database was also performed.

Completeness Commission

evaluation Method Description  Data contained in the DFIRM Database files reflect the content of the source materials. Features may have been eliminated or generalized on the source graphic, due to scale and legibility constraints. With new mapping, FEMA plans to maintain full detail in the spatial data it produces. However, older information is often transferred from existing maps where some generalization has taken place. Flood risk data are developed for communities participating in the NFIP for use in insurance rating and for floodplain management. Flood hazard areas are determined using statistical analyses of records of river flow, storm tides, and rainfall; information obtained through consultation with the communities; floodplain topographic surveys; and hydrological and hydraulic analysis. Both detailed and approximate analyses are employed. Generally, detailed analyses are used to generate flood risk data only for developed or developing areas of communities. For areas where little or no development is expected to occur, FEMA uses approximate analyses to generate flood risk data. Typically, only drainage areas that are greater than one square mile are studied.

Completeness Omission

evaluation Method Description  Data contained in the DFIRM Database files reflect the content of the source materials. Features may have been eliminated or generalized on the source graphic, due to scale and legibility constraints. With new mapping, FEMA plans to maintain full detail in the spatial data it produces. However, older information is often transferred from existing maps where some generalization has taken place. Flood risk data are developed for communities participating in the NFIP for use in insurance rating and for floodplain management. Flood hazard areas are determined using statistical analyses of records of river flow, storm tides, and rainfall; information obtained through consultation with the communities; floodplain topographic surveys; and hydrological and hydraulic analysis. Both detailed and approximate analyses are employed. Generally, detailed analyses are used to generate flood risk data only for developed or developing areas of communities. For areas where little or no development is expected to occur, FEMA uses approximate analyses to generate flood risk data. Typically, only drainage areas that are greater than one square mile are studied.

ConceptualConsistency

measure Description  When FEMA revises an FIS, adjacent studies are checked to ensure agreement between flood elevations at the boundaries. Likewise flood elevations at the confluence of streams studied independently are checked to ensure agreement at the confluence. The FIRM and the FIS are developed together and care is taken to ensure that the elevations and other features shown on the flood profiles in the FIS agree with the information shown on the FIRM. However, the elevations as shown on the FIRM are rounded whole-foot elevations. They must be shown so that a profile recreated from the elevations on the FIRM will match the FIS profiles within one half of one foot.