Identification_Information: Citation: Citation_Information: Originator: Wisconsin Department of Natural Resources Publication_Date: 20120608 Title: DCS Terrain Submission for Grant County, Wisconsin (Lower Wisconsin River Project) Geospatial_Data_Presentation_Form: FEMA-DCS-Terrain Publication_Information: Publication_Place: Washington, DC Publisher: Federal Emergency Management Agency Online_Linkage: http://hazards.fema.gov Larger_Work_Citation: Citation_Information: Originator: Federal Emergency Management Agency Publication_Date: Unknown Title: FEMA CASE 12-05-2282S Description: Abstract: Terrain data, as defined in FEMA Guidelines and Specifications, Appendix N: Data Capture Standards, describes the digital topographic data that was used to create the elevation data representing the terrain environment of a watershed and/or floodplain. Terrain data requirements allow for flexibility in the types of information provided as sources used to produce final terrain deliverables. Once this type of data is provided, FEMA will be able to account for the origins of the flood study elevation data. (Source: FEMA Guidelines and Specifications, Appendix N, Section N.1.2). Purpose: Terrain data is used to represent the topography of a watershed and/or floodplain environment and to extract useful information for hydraulic and hydrologic models. (Source: FEMA Guidelines and Specs, Appendix N) Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20120608 Currentness_Reference: MIP Submission Date Status: Progress: In work Maintenance_and_Update_Frequency: Unknown Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -91.189 East_Bounding_Coordinate: -90.389 North_Bounding_Coordinate: 43.233 South_Bounding_Coordinate: 42.487 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: elevation Theme: Theme_Keyword_Thesaurus: FEMA NFIP Topic Category Theme_Keyword: Land Surface Theme_Keyword: Relief Theme_Keyword: Topography Theme_Keyword: Elevation Data Theme_Keyword: LIDAR Theme_Keyword: Breaklines Theme_Keyword: Contours Theme_Keyword: DEM Place: Place_Keyword_Thesaurus: None Place_Keyword: REGION 05 Place_Keyword: STATE WI Place_Keyword: COUNTY Grant Place_Keyword: COUNTY-FIPS 043 Place_Keyword: COMMUNITY Grant County and Incorporated Areas Place_Keyword: FEMA-CID 55043C Access_Constraints: None Use_Constraints: Acknowledgement of FEMA and Grant County, Wisconsin would be appreciated in products derived from these data. This digital data is produced for the purposes of updating/creating a DFIRM database. Data_Quality_Information: Logical_Consistency_Report: The Terrain package includes flow vectors and non-tiled data (SinkBreach, NoData, VoidData, ExternalBoundary, Island). The Terrain data are consistent with the elevation dataset. A comparison of profile plots with the flow vector data confirms that flow vectors are correctly drawn. Flood hazard boundaries do not extend beyond the ExternalBoundary, if it exists. FIRM panels show the flood hazard area delineations where Island data are present. Completeness_Report: Data contained in the Terrain package highlight specific issues in elevation datasets. Terrain data are derived datasets that aid automated hydrologic and hydraulic analyses, the flood hazard area boundary delineations, and quality control. Positional_Accuracy: Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The dataset was developed to generate contours meeting the National Map Accuracy Standards for the scale 1:600, which results in RMSEz of 0.425 feet. This is within the FEMA specified vertical accuracy tolerance of 0.6. This RMSEz x 1.96 (for conversion) = 0.834 feet Accuracyz at the 95% confidence level (or 0.25 meters). Quantitative_Vertical_Positional_Accuracy_Assessment: Vertical_Positional_Accuracy_Value: 0.25 Vertical_Positional_Accuracy_Explanation: 481 points were used in checking the accuracy of the LIDAR data. Surveys were conducted at 5 sites utilizing the base stations established in the static network. These surveys established ground truth data at each site on different surface types, including bare earth, low grass, brush lands, low trees, forest, high grass, weeds, crops, and urban areas. Statistical comparissons were made between ground truth points collected from the ground survey and the elevation at the associated horizontal coordinates represented on the LiDAR-derived terrain model. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Ayres Associates Publication_Date: 20120608 Title: Grant County LiDAR Type_of_Source_Media: Hard drive sent to FEMA Engineering Library Attn: Bill Davis 847 South Pickett Street Alexandria, VA 22304 Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20110501 Source_Currentness_Reference: Ground Condition Source_Citation_Abbreviation: VARIABLE-SPACING1 Source_Contribution: The Grant countywide terrain dataset was built by processing the LIDAR bare earth points and breaklines using ArcGIS V10.1 Build Terrain tool. Source_Information: Source_Citation: Citation_Information: Originator: Ayres Associates Publication_Date: 20120508 Title: Grant County (WI) 2011 LiDAR Type_of_Source_Media: Hard drive sent to FEMA Engineering Library Attn: Bill Davis 847 South Pickett Street Alexandria, VA 22304 Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20110501 Source_Currentness_Reference: Ground Condition Source_Citation_Abbreviation: BREAKLINES1 Source_Contribution: The Grant countywide terrain dataset was built by processing the LIDAR bare earth points and breaklines using ArcGIS V10.1 Build Terrain tool. Source_Information: Source_Citation: Citation_Information: Originator: Wisconsin Department of Natural Resources Publication_Date: 20120608 Title: 5-foot Digital Elevation Model Geospatial_Data_Presentation_Form: ESRI Binary Grid Type_of_Source_Media: Hard drive sent to FEMA Engineering Library Attn: Bill Davis 847 South Pickett Street Alexandria, VA 22304 Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20110501 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: REGULAR-GRID1 Source_Contribution: Grant County LiDAR-derived terrain was processed into a countywide 5-foot DEM grid, the direct source of elevation data used in the redelineation of the FEMA DFIRM dataset. Process_Step: Process_Description: Data were received as .las files for the bare earth points. A feature class containing the 3-D breaklines was also provided. The .las files were converted to muiltipoint feature classes using ArcGIS 3-D Analyst function LAS TO MULTIPOINT. These were imported into an empty ESRI file geodatabase along with the breaklines. The average point spacing used was 4.0 feet based on what was reported in the metadata provided for the LiDAR data. The projection and coordinate system for the geodatabase was set to Grant County Coordinate System Feet and the vertical datum was set to NAVD88. Terrain was then built using ArcGIS V10.1 Build Terrain tool. The DEM was created from the terrain dataset using ArcGIS V10.1 Terrain to Raster conversion tool. Process_Date: 20120503 Process_Step: Process_Description: SinkBreach is a linear spatial file representing sink breaches used to hydrologically correct terrain models. A comparison of flow path automatically generated by a GIS software using elevation data and known flow paths from existing maps and/or orthophoto shows sinks that need to be corrected. NoData, VoidArea, ExternalBoundary and Island are polygon spatial files created by reviewing elevation datasets. Breaklines for this project utilized a process called Lidargrammetry. Lidargrammetry involves manipulating the LiDAR data’s intensity information to create a metrically sound stereo environment. From this generated “imagery” dependable breaklines can be photogrammetrically compiled. This capability allows for high-accuracy terrain data from LiDAR without supplemental imagery. The breaklines were provided in DWG and ESRI shapefile formats. Process_Date: 20120522 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Transverse Mercator Transverse_Mercator: Scale_Factor_at_Central_Meridian: 1.000035 Longitude_of_Central_Meridian: -90.800000 Latitude_of_Projection_Origin: 41.411111 False_Easting: 794999.9980000 False_Northing: 0.033000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 10.0 Ordinate_Resolution: 10.0 Planar_Distance_Units: U.S. Survey Foot Geodetic_Model: Horizontal_Datum_Name: D_North_American_1983_HARN Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.00 Denominator_of_Flattening_Ratio: 298.257222 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Datum_Name: North American Vertical Datum of 1988 Altitude_Resolution: 1.000000 Altitude_Distance_Units: Feet Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Terrain Entity_Type_Definition: A terrain dataset is a multiresolution, TIN-based surface built from measurements stored as features in a geodatabase. Entity_Type_Definition_Source: ESRI Support at http:\\www.esri.com Detailed_Description: Entity_Type: Entity_Type_Label: 3-D Polyline Entity_Type_Definition: A line feature class containing x,y,z shape geometry per vertex and one z-value per shape. Entity_Type_Definition_Source: ESRI Support at http:\\www.esri.com Detailed_Description: Entity_Type: Entity_Type_Label: 3-D Point Shapefile Entity_Type_Definition: A point feature class containing x,y,z shape geometry per vertex and one z-value per shape. Entity_Type_Definition_Source: ESRI Support at http:\\www.esri.com Detailed_Description: Entity_Type: Entity_Type_Label: ESRI Binary Grid Entity_Type_Definition: A grid is a raster data storage format native to ESRI. Entity_Type_Definition_Source: ESRI Support at http:\\www.esri.com Overview_Description: Entity_and_Attribute_Overview: The Terrain data package is made up of several data themes containing primarily spatial information. These data supplement elevation datasets by providing additional information to aid flood risk evaluation and flood hazard area delineations. Entity_and_Attribute_Detail_Citation: Appendix N of FEMA Guidelines and Specifications for FEMA Flood Hazard Mapping Partners contains a detailed description of the data themes and references to other relevant information. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Federal Emergency Management Agency Contact_Address: Address_Type: mailing address Address: 500 C Street, S.W. City: Washington State_or_Province: District of Columbia Postal_Code: 20472 Country: USA Contact_Voice_Telephone: 1-877-336-2627 Contact_Electronic_Mail_Address: miphelp@riskmapcds.com Distribution_Liability: No warranty expressed or implied is made by FEMA regarding the utility of the data on any other system nor shall the act of distribution constitute any such warranty. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: FEMA-DCS-Terrain Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://hazards.fema.gov Fees: Contact Distributor Metadata_Reference_Information: Metadata_Date: 20120608 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Katie McMahan Contact_Organization: Wisconsin Department of Natural Resources Contact_Position: GIS Program Manager Contact_Address: Address_Type: mailing address Address: 101 S Webster Street WT3 City: Madison State_or_Province: Wisconsin Postal_Code: 53707 Country: USA Contact_Voice_Telephone: 608-264-9204 Contact_Electronic_Mail_Address: katie.mcmahan@wisconsin.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-2006 Metadata_Extensions: Online_Linkage: http://hazards.fema.gov Online_Linkage: http://www.epsg.org Profile_Name: FEMA NFIP Metadata Content and Format Standard