MapXsLn (Cross Sections), Union County, NC, 2007

North Carolina Floodplain Mapping Program, North Carolina Division of Emergency Management 200706 MapXsLn (Cross Sections), Union County, NC, 2007 vector digital data CROSS_SECTIONS_2008 withheld MapXsLn is a GIS shapefile containing information about Cross Section lines. These lines represent the locations of channel surveys performed for input into the hydraulic model used to calculate flood elevations. These locations are also shown on the flood profiles in the Flood Insurance Study report and can be used to cross reference the flood profiles to the planimetric depiction of the flood hazard. These data were collected and derived by the North Carolina Floodplain Mapping Program (www.ncfloodmaps.com) as part of its effort to modernize FEMA Flood Insurance Rate Maps (FIRM) statewide. The North Carolina Floodplain Mapping Program was established through a Cooperating Technical State (CTS) agreement with FEMA in response to the extensive damage caused by Hurricane Floyd in 1999. en 200706 publication date Complete As needed -81.113178 -80.683785 36.059132 35.500241 1448985.734375 1618403.984375 390099.803355 533172.276042 None Cross Sections North Carolina Atlas & Gazetteer (Yarmouth, Maine: DeLorme, 2001). Union County, City of Monroe, City of Monroe Extraterritorial Jurisdiction, Town of Fairview, Town of Hemby Bridge, Town of Indian Trail, Town of Marshville, Town of Mineral Springs, Town of Mint Hill, Town of Stallings, Town of Unionville, Town of Waxhaw, Town of Weddington, Town of Wingate, Village of Lake Park, Village of Marvin, North Carolina None These data were created with the highest consideration of accuracy and data integrity. However, as with all other geospatial datasets, users must take into consideration the consequences of using the data for specific applications, business processes, decisions, and map display. For example, surface conditions may have changed in some areas since the initial data was captured. A full metadata record is provided to help the user understand the date, map scale and accuracy standard applied in the collection and data development process. The data should not be used without full review and comprehension of the metadata. Acknowledgement of the North Carolina Floodplain Mapping Program is appreciated when using the data set. Data further derived from this data set should be fully documented using the federal metadata standard and listed via the NC Geospatial Data Clearinghouse. North Carolina Floodplain Mapping Program, NC DEM John Dorman Director physical address

1812 Tillery Place, Suite 105

Raleigh NC 27604 919-715-5711 919-715-0408 ESRI ArcCatalog 9.3.1.1850 Federal Emergency Management Agency Unknown Unknown Flood Insurance Study, UNION COUNTY, NC document Washington, DC FEMA withheld Federal Emergency Management Agency Unknown Unknown Flood Insurance Study, UNION COUNTY, NC raster digital data Washington, DC FEMA withheld Federal Emergency Management Agency Unknown Unknown Flood Insurance Study, UNION COUNTY, NC map withheld Feature Class None None Watershed Concepts 200706 MapXsLn Feature class 200706 publication date STUDY4 For the streams studied by detailed methods, the cross section geometries were obtained from a combination of digital elevation data obtained using Light Detection and Ranging (LIDAR) data and field surveys. All bridges, dams, and culverts were field surveyed to obtain elevation data and structural geometry. Natural floodplain cross sections were surveyed approximately every 4000? along the detail study reaches to obtain the channel geometry between bridges and culverts. Overbank cross-section data for the backwater analyses were obtained from recently flown LIDAR data. Cross sections for the flooding sources studied by limited detailed methods were obtained using digital elevation data obtained with LIDAR technology developed as part of the North Carolina Statewide Floodplain Mapping Program. The hydraulic model is prepared using this digital elevation data, without surveying bathymetric or structural data. Where bridge or culvert data are readily available, such as from the North Carolina Department of Transportation, these data have been reflected in the hydraulic model. If these structural data are not readily available, field measurements of these structures were made to approximate their geometry in the hydraulic models. In addition, this method does not include field surveys that determine specifics on channel and floodplain characteristics. For redelineated streams in the county, cross sections were digitized from previously effective FIRMs or Floodway map panels. For the streams studied by detailed methods, the cross section geometries were obtained from a combination of digital elevation data obtained using Light Detection and Ranging (LIDAR) data and field surveys. All bridges, dams, and culverts were field surveyed to obtain elevation data and structural geometry. Natural floodplain cross sections were surveyed approximately every 4000? along the detail study reaches to obtain the channel geometry between bridges and culverts. Overbank cross-section data for the backwater analyses were obtained from recently flown LIDAR data. Cross sections for the flooding sources studied by limited detailed methods were obtained using digital elevation data obtained with LIDAR technology developed as part of the North Carolina Statewide Floodplain Mapping Program. The hydraulic model is prepared using this digital elevation data, without surveying bathymetric or structural data. Where bridge or culvert data are readily available, such as from the North Carolina Department of Transportation, these data have been reflected in the hydraulic model. If these structural data are not readily available, field measurements of these structures were made to approximate their geometry in the hydraulic models. In addition, this method does not include field surveys that determine specifics on channel and floodplain characteristics. For redelineated streams in the county, cross sections were digitized from previously effective FIRMs or Floodway map panels. Unknown Metadata imported. Metadata imported. withheld Metadata imported. withheld Metadata imported. withheld 20070524 09591700 Vector Simple FALSE 0 TRUE FALSE coordinate pair 0.000244 0.000244 survey feet North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 GCS_North_American_1983 NAD_1983_StatePlane_North_Carolina_FIPS_3200_Feet 1.000000 Explicit elevation coordinate included with horizontal coordinates CROSS_SECTIONS_2008 Cross Section Lines Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) Feature Class 0 Shape Feature geometry. ESRI PolyLine A type of shape made up of two or more segments. ESRI EFFSTAT String 5 0 0 EFFSTAT Is the x-section part of an effective study or preliminary study? Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) D_Status Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) MAPXSLNID String 25 0 0 MAPXSLNID Primary key. Defined by mapping contractor using the formula STFIPS + COFIPS + DATE + SEQUENTIAL NUMBER (where date = YYYYMMDD) Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) 37179200707051 37179200707059612 XSECTID String 25 0 0 XSECTID Foreign key to S_HYDRACROSSSECTION Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) NP Foreign key to S_HYDRACROSSSECTION Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) WTR_NM_LID String 25 0 0 WTR_NM_LID Water name lookup identification. A code that provides a link to the name of the water feature in the MAPLWTRNM table. Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) 37179200506231 3717920050623272 REFPTID String 25 0 0 REFPTID Foreign key to S_REFPOINT Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) 371792007061913 3717920070619574 XS_LTR String 12 0 0 XS_LTR Cross section letter or number shown on FIRM Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) 000 2877 STREAM_STN Double 8 38 8 STREAM_STN Distance along stream Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) 0 287662 XS_LN_TYP String 5 0 0 XS_LN_TYP Cross section line type Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) D_XS_LNTYP Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) LEN_LID String 5 0 0 LEN_LID Units of linear measure Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) D_LENGTH_UNITS Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) V_DATM_LID String 5 0 0 V_DATM_LID Vertical Datum lookup identification Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) D_V_DATUM Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) AREA_LID String 5 0 0 AREA_LID Units of area measure. A code that provides a link to an entry from D_AREA_UNITS Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) D_AREA_UNITS Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) VEL_LID String 5 0 0 VEL_LID Velocity Lookup Identification. This unit specifies the unit of measurement for the velocity of the floodway Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) D_VELOCITY_UNITS Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) BED_ELEV Double 8 38 8 BED_ELEV Streambed elevation. The elevation of the streambed at this cross section as shown on the flood profile in the FIS Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) NULL Streambed elevation. The elevation of the streambed at this cross section as shown on the flood profile in the FIS Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) TOP_WIDTH Double 8 38 8 TOP_WIDTH Width of the floodway at this cross section as shown in the Floodway data table in the FIS Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) NULL Width of the floodway at this cross section as shown in the Floodway data table in the FIS Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) VELOCITY Double 8 38 8 VELOCITY The mean velocity of the floodway at this cross section as shown in the Floodway data table in the FIS Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) NULL The mean velocity of the floodway at this cross section as shown in the Floodway data table in the FIS Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) WSEL_REG Double 8 38 8 WSEL_REG 100-year water surface elevation Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) 294.1 759 XS_AREA Double 8 38 8 XS_AREA Underwater cross section area used in floodway data table. Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) NULL Underwater cross section area used in floodway data table. Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) METAID String 25 0 0 METAID Foreign key to METADATA Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) 371792007061910 Foreign key to METADATA Geodatabase Design (State of North Carolina, North Carolina Floodplain Mapping Program, 2007) Sequential unique whole numbers that are automatically generated. OBJECTID OID 4 10 0 OBJECTID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Geometry 8 0 0 SHAPE Feature geometry. ESRI Coordinates defining the features. Shape.STLength() Double 0 0 0 North Carolina Center for Geographic Information and Analysis Production Services mailing and physical address

301 N. Wilmington Street, Suite 700

Raleigh NC 27601-2825 USA (919) 733-2090 (919) 715-0725 dataq@ncmail.net 8:30 AM to 5:30 PM EST Phone and email preferred. For current price information visit www.cgia.state.nc.us/cost.html Downloadable Data NCCGIA is charged with the development and maintenance of the State's corporate geographic database and, in cooperation with other mapping organizations, is committed to offering its users accurate, useful, and current information about the state. Although every effort has been made to ensure the accuracy of information, errors and conditions originating from physical sources used to develop the corporate database may be reflected in the data supplied. The client must be aware of data conditions and bear responsibility for the appropriate use of the information with respect to possible errors, original map scale, collection methodology, currency of data, and other conditions specific to certain data. NCCGIA does not support secondary distribution of this data. The use of trade names or commercial products does not constitute their endorsement by the NCCGIA or North Carolina State Government. ASCII line dataset and metadata PC-based PKZip compatible products (WinZip, unzip) may be used to decompress the dataset. 2.0-4.0 MB withheld For current price information visit www.cgia.state.nc.us/cost.html Custom data creation and analysis work is available by contract. Contact Production Services at (919) 733-2090. Data are supplied in ArcInfo and ASCII formats. Format compatibility is the user's responsibility. For more information visit www.cgia.state.nc.us/cost.html. unknown 20090114 Watershed Concepts David Key Project Manager mailing and physical address

3333 Regency Parkway, Suite 120

Cary NC 27518 919-460-6895 919-460-6896 FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time http://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile http://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile http://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile http://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile en 20250714 11271700 FALSE 20250509 10373200 20250509 10373200 CROSS_SECTIONS_2008 002 Projected GCS_North_American_1983 Linear Unit: Foot_US (0.304801) NAD_1983_StatePlane_North_Carolina_FIPS_3200_Feet <ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/3.1.0'><WKT>PROJCS["NAD_1983_StatePlane_North_Carolina_FIPS_3200_Feet",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",2000000.002616666],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-79.0],PARAMETER["Standard_Parallel_1",34.33333333333334],PARAMETER["Standard_Parallel_2",36.16666666666666],PARAMETER["Latitude_Of_Origin",33.75],UNIT["Foot_US",0.3048006096012192],AUTHORITY["EPSG",2264]]</WKT><XOrigin>-121841899.99984019</XOrigin><YOrigin>-93658999.999984175</YOrigin><XYScale>19969.382632759378</XYScale><ZOrigin>0</ZOrigin><ZScale>1</ZScale><MOrigin>0</MOrigin><MScale>1</MScale><XYTolerance>0.00040061328620526096</XYTolerance><ZTolerance>2.0000000000000002e-05</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>102719</WKID><LatestWKID>2264</LatestWKID></ProjectedCoordinateSystem> 1.0 Esri ArcGIS 13.1.5.41833 CROSS_SECTIONS_2008 1448985.734375 1618403.984375 533172.276042 390099.803355 1 -80.844633 -80.271413 35.208243 34.807865 1 ISO 19115 Geographic Information - Metadata DIS_ESRI1.0 dataset 002 withheld Feature Class Enterprise Geodatabase Feature Class NAD_1983_StatePlane_North_Carolina_FIPS_3200_Feet EPSG 6.12(9.0.0) 0 20250509