West Virginia Approximate Zone A Re-Study Flood Model Download Packages

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: AMEC Environment and Infrastructure (AMEC)
Title:
West Virginia Approximate Zone A Re-Study Flood Model Download Packages
Publication_Information:
Publisher: WV GIS Technical Center
Publication_Place: Morgantown, WV
Publication_Date: 20130228
Description:
Abstract:
The files in this download package contain raster digital elevation models (DEM) for Approximate Zone A streams, buffer polygons of stream DEM's, stream HEC-RAS models, and shapefiles of cutlines and county-wide streams, where available, in select West Virginia counties. The stream DEM's were extracted by AMEC from a countywide subset of the USGS National Elevation Dataset (NED). This download package was compiled by the WVGISTC.

Purpose:
This data package may be useful to surveyors and/or engineers seeking to create local base flood elevations (BFE). BFEs so created may be a valuable contribution to Letters of Map Change (LOMC), including Letters of Map Amendment (LOMA) and Letters of Map Revision (LOMR). Some advanced knowledge, expertise and specialized software applications are required in order to use the included data.

Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20100416
Ending_Date: 20130208
Currentness_Reference: Publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -82.703386
East_Bounding_Coordinate: -77.657685
North_Bounding_Coordinate: 40.63987
South_Bounding_Coordinate: 37.160858
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: elevation
Theme_Keyword: environment
Theme_Keyword: inlandWaters
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: floodplain model
Theme_Keyword: digital floodplain
Theme_Keyword: flood depth model
Theme_Keyword: flood water surface elevation
Theme_Keyword: advisory flood height
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: West Virginia
Access_Constraints: Public, No Restrictions
Use_Constraints: No Restrictions
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: West Virginia GIS Technical Center
Contact_Person: Eric Hopkins
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: mailing and physical address
Address: West Virginia University
Address: Department of Geology and Geography
Address: PO Box 6300
Address: Brooks Hall Rm. 330
Address: 98 Beechurst ave.
City: Morgantown
State_or_Province: WV
Postal_Code: 26501
Contact_Voice_Telephone: (304) 293-0557
Contact_Electronic_Mail_Address:
eric.hopkins@mail.wvu.edu Contact_Hours_of_Service: 9 AM to 5 PM
Data_Quality_Information:
Logical_Consistency_Report: Tests for integrity have not been performed.
Completeness_Report: Features represented have not been tested for completeness
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Data were collected using methods that have unknown accuracy (EPA National Geospatial Data Policy [NGDP] Accuracy Tier 10). For more information, please see EPA's NGDP at <http://epa.gov/geospatial/policies.html>
Lineage:
Process_Step:
Process_Date: Unknown
Process_Description:
The planimetric (x, y) spacing of elevation postings within the source DEM is 1/9 arc-second. The DEM data was downloaded from the USGS National Elevation Dataset (NED) seamless server. The data obtained was subsequently mosaicked and reprojected to the project area's State Plane Coordinate System (SPCS) using the North American Datum of 1983 (NAD83). A conversion was performed to convert from units of meters to units of feet. [Source: AMEC]
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: AMEC
Contact_Address:
Address_Type: mailing and physical
Address: 14424 Albemarle Point Place, Suite 115
City: Chantilly
State_or_Province: VA
Postal_Code: 20151
Contact_Voice_Telephone: (703) 488-3738
Process_Step:
Process_Date: Unknown
Process_Description:
For each stream a geodatabase containing the stream centerline, bank stations, flow path locations and cross sections is created and the data is imported into a HECRAS model. Cross-sections were automatically placed and then modified based on the terrain and orthophotos. Digital geo-referenced hydraulic modeling elements in the form of cross sections attributed with water-surface elevations were provided at the countywide level. Elevations are given in the North American Vertical Datum of 1988 (NAVD88), units feet. [Source: AMEC]
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: AMEC
Contact_Address:
Address_Type: mailing and physical
Address: 14424 Albemarle Point Place, Suite 115
City: Chantilly
State_or_Province: VA
Postal_Code: 20151
Contact_Voice_Telephone: (703) 488-3738
Process_Step:
Process_Date: Unknown
Process_Description:
The stream centerlines provided by the county were ortho-rectified and aligned with the contours where orthophotos were inconclusive. Streams were ortho-rectified at a reasonable scale (approximately 1=2000).The stream centerlines were merged to create a countywide stream centerline feature. [Source: AMEC]
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: AMEC
Contact_Address:
Address_Type: mailing and physical
Address: 14424 Albemarle Point Place, Suite 115
City: Chantilly
State_or_Province: VA
Postal_Code: 20151
Contact_Voice_Telephone: (703) 488-3738
Process_Step:
Process_Date: 20130220
Process_Description:
HEC-RAS model and associated data were organized by county and stream name, and packaged for download via the WVGISTC WV Flood Tool (<http://MapWV.gov/flood>).
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: WVGISTC
Contact_Address:
Address_Type: mailing and physical
Address: West Virginia University
Address: Department of Geology and Geography
Address: PO Box 6300
Address: Brooks Hall Rm. 330
Address: 98 Beechurst ave.
City: Morgantown
State_or_Province: WV
Postal_Code: 26501
Contact_Voice_Telephone: (304) 293-0557
Contact_Electronic_Mail_Address:
eric.hopkins@mail.wvu.edu Contact_Hours_of_Service: 9 AM to 5 PM
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: State Plane Coordinate System 1983
State_Plane_Coordinate_System:
SPCS_Zone_Identifier: 4701, 4702
Lambert_Conformal_Conic:
Standard_Parallel: 37.49371181
Standard_Parallel: 38.88333333
Longitude_of_Central_Meridian: -81
Latitude_of_Projection_Origin: 37
False_Easting: 1968503.94
False_Northing: 0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.00001
Ordinate_Resolution: 0.00001
Planar_Distance_Units: feet
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 1980
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298.257222
Distribution_Information:
Resource_Description: Downloadable Data
Distribution_Liability:
Although these data have been processed successfully on a computer system in a multi-agency effort to distribute data, no warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data to evaluate data set limitations, restrictions or intended use. No agencies involved with the packaging and distribution of this data shall not be held liable for improper or incorrect use of the data described and/or contained herein.
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: West Virginia GIS Technical Center
Contact_Person: Eric Hopkins
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: mailing and physical address
Address: PO Box 6300
Address: 330 Brooks Hall
City: Morgantown
State_or_Province: WV
Postal_Code: 26506-6300
Contact_Voice_Telephone: (304) 293-9463
Contact_Electronic_Mail_Address: Eric(dot)Hopkins(at)mail.wvu.edu
Metadata_Reference_Information:
Metadata_Date: 20130206
Metadata_Future_Review_Date: 20170206
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: West Virginia GIS Technical Center
Contact_Person: Eric Hopkins
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: mailing and physical address
Address: PO Box 6300
Address: 330 Brooks Hall
City: Morgantown
State_or_Province: WV
Postal_Code: 26506-6300
Contact_Voice_Telephone: (304) 293-9463
Contact_Electronic_Mail_Address: Eric.Hopkins@mail.wvu.edu
Generated by mp version 2.9.2 on Wed Feb 20 12:36:27 2013