2011 Long-Term Average Annual Oceanfront Erosion Rate Update Study

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: North Carolina Divsion of Coastal Management
Publication_Date: 2013
Title:
2011 Long-Term Average Annual Oceanfront Erosion Rate Update Study
Edition: Final
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage: <http://dcm2.enr.state.nc.us/maps/erosion_rates_2011.htm>
Description:
Abstract:
These data represent Blocked 2011 Oceanfront Setback Factors (Results from the 2011 Average Long-Term Erosion Rate Update Study). These polygons DO NOT represent the actual Ocean Erodible Area (OEA) boundaries as these landward limits are dynamic and can potentially change from day-to-day; the landward limit of these polygons are arbitrary. The OEA associated with each polygon is a distance to be measured from a vegetation line to be determined by NC DCM staff or authorized local permitting official (LPO).
Contact NC DCM for more information: 1-888-4RCOAST
Purpose:
Setback Factors are used in part to determine oceanfront development setback.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2013
Currentness_Reference: Effective 02/01/2013
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Once per 5 Years (when data is available)
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -78.542146
East_Bounding_Coordinate: -75.417614
North_Bounding_Coordinate: 36.590405
South_Bounding_Coordinate: 33.795446
Keywords:
Theme:
Theme_Keyword: Setback Factor
Theme_Keyword: Erosion Rate
Access_Constraints: None
Use_Constraints: DO NOT USE THESE DATA FOR NAVIGATIONAL PURPOSES.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NCDENR - Division of Coastal Management
Contact_Person: Ken Richardson
Contact_Position: GIS Analyst
Contact_Address:
Address_Type: mailing address
Address: 400 Commerce Avenue
City: Morehead City
State_or_Province: NC
Postal_Code: 28557
Country: US
Contact_Voice_Telephone: 252-808-2808
Contact_Facsimile_Telephone: 252-247-3330
Contact_Electronic_Mail_Address: ken.richardson@ncdenr.gov
Hours_of_Service: 8:00 AM to 5:00 PM, EST (Monday - Friday)
Browse_Graphic:
Browse_Graphic_File_Type: JPEG
Data_Set_Credit:
North Carolina State University and North Carolina Division of Coastal Management
Security_Information:
Security_Classification: Unclassified
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.4000
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: 50% manual verification performed.
Completeness_Report: This data set is complete.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Polygons are not tied to any "ground" features. Polygon transitions (Setback factor changes) occur where Blocked Erosion Rates change. These "lines" of transition occur perpendicular to transects used in the study.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: N/A
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Ken Richardson
Publication_Date: Unpublished Material
Title: North Carolina Division of Coastal Management
Online_Linkage: <http://dcm2.enr.state.nc.us/maps/erosion_rates_2011.htm>
Source_Scale_Denominator: 1:600
Type_of_Source_Media: Digital (Digitized with ESRI ArcGIS 9.3
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2013
Source_Currentness_Reference: 02/01/2013
Source_Citation_Abbreviation: NC Division of Coastal Management
Source_Contribution:
The 2009 shoreline used in this study was digitized from 2009 USDA NAIP imagery.
Process_Step:
Process_Description:
Blocking procedures have been established by senior staff at DCM. The procedures itemized below represent refinements and clarifications of procedures established and used in all the previous studies. In many cases, procedures are specified using quantitative requirements that allow for increased repeatability of results. The blocked rates are reviewed and corrected using "expert judgment" improving determinations made by blind calculations. In this manner the final client, the property owner, is best served.
1. Erosion rate segments must be at least eight transects long (approximately one-quarter mile).
2.Segments that have accreted or have erosion rates less than 2 ft/yr are assigned a value of 2 ft/yr erosion factor.
3. The actual rate boundaries fall at an unknown location between transects spaced every 50 meters along the oceanfront shoreline. In determining the transect to use for a rate boundary, always slide the lower blocked rate toward the transect with the higher erosion rate value
4. One foot intervals are preferred for rate block boundaries.
(a) However, a 1/2 foot rate interval is appropriate for a rate "hilltop" where the maximum value on the "hilltop" does not reach the next full number erosion rate.
(b) A 1/2 foot rate interval is also appropriate for short blocks (8 to 10 transects) where the average value for the short block is closer to the 1/2 foot rate value than the nearest whole foot interval.
5. When a rate "hilltop" is approached which requires use of minimum eight transect average block values, the hill must be approached using this method from both down-coast of the "hilltop" and up-coast of the "hilltop". If adjustments must be made to fit the data, the adjustment should be made to the "hilltop" and immediately adjacent blocks.
(a) If a rate data "hilltop" has less than 8 transects when approached from both up and down coast, use the unidirectional average both up and over the hilltop. (b) In the case of a 5a procedure, if the smoothed value of the last transect is less than the adjacent erosion rate segment value, use the value for determining the average erosion rate in its 8 transect segment but include it with the adjacent lower erosion segment.
6. When delineating a rate boundary on large-scale photo base maps, always slide the boundary toward an apparent property boundary in a direction that the lower rate is expanded toward the higher rate (give the property owner the benefit of the doubt).
The blocking procedure captures the variation in rate while meeting the management goal of having common rates among property owners within specified distances. In addition, this figure illustrates the portion of the island that is has a less than 2 ft/yr erosion rate, but that is blocked at 2 ft/yr. Finally, the application of the blocked rate into the Inlet Hazard Area is also illustrated.
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NCDENR - Division of Coastal Management
Contact_Person: Ken Richardson
Contact_Position: GIS Analyst
Contact_Address:
Address_Type: mailing address
Address: 400 Commerce Avenue
City: Morehead City
State_or_Province: NC
Postal_Code: 28557
Country: US
Contact_Voice_Telephone: 252-8028-2808
Contact_Facsimile_Telephone: 252-247-3330
Contact_Electronic_Mail_Address: ken.richardson@ncdenr.gov
Hours_of_Service: 8:00 AM to 5:00 PM, EST (Monday - Friday)
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: C:\TEMP\xml2A.tmp
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: C:\TEMP\xmlB4.tmp
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation:
C:\DCM_GIS\Coastal_Hazards_Geodata\metadata_2004_ErosionRate.xml
Process_Step:
Process_Description: Dataset copied.
Source_Used_Citation_Abbreviation:
Process_Date: 20120604
Process_Time: 15293500
Process_Step:
Process_Description: Dataset copied.
Source_Used_Citation_Abbreviation:
Process_Date: 20120822
Process_Time: 13532700
Process_Step:
Process_Description: Dataset copied.
Source_Used_Citation_Abbreviation:
Process_Date: 20130129
Process_Time: 10213100
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 683
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Lambert Conformal Conic
Lambert_Conformal_Conic:
Standard_Parallel: 34.333333
Standard_Parallel: 36.166667
Longitude_of_Central_Meridian: -79.000000
Latitude_of_Projection_Origin: 33.750000
False_Easting: 2000000.002617
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000000
Ordinate_Resolution: 0.000000
Planar_Distance_Units: survey feet
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Resolution: 0.000100
Altitude_Encoding_Method:
Explicit elevation coordinate included with horizontal coordinates
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: 2011 Oceanfront Construction Setback Factors
Entity_Type_Definition: 2011 Setback Factor - Polygons
Entity_Type_Definition_Source: North Carolina Division of Coastal Management
Attribute:
Attribute_Label: FID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: OBJECTID
Attribute:
Attribute_Label: ID
Attribute:
Attribute_Label: STRM100_RE
Attribute_Definition: 100 Year Storm Recession (ft)
Attribute_Definition_Source: NC DCM
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: FEATURE
Attribute_Definition: Feature
Attribute_Definition_Source: NC DCM
Attribute:
Attribute_Label: SOURCE
Attribute_Definition: Original Data Source
Attribute_Definition_Source: NC DCM
Attribute:
Attribute_Label: E_DATE
Attribute_Definition: Setback Factor effective date
Attribute_Definition_Source: NC DCM
Attribute:
Attribute_Label: CALC_AEC
Attribute_Definition: Calculated Ocean Erodible Area (OEA) - AEC
Attribute_Definition_Source: NC DCM
Attribute:
Attribute_Label: COMMENTS
Attribute_Definition: Comments
Attribute_Definition_Source: NC DCM
Attribute:
Attribute_Label: CRC_DATE
Attribute_Definition:
Date initially approved by the Coastal Resources Commission (CRC)
Attribute_Definition_Source: NC DCM
Attribute:
Attribute_Label: OSBM_DATE
Attribute_Definition: Date Fiscal Analyis was approved by NC OSBM
Attribute_Definition_Source: NC DCM
Attribute:
Attribute_Label: AEC_FORM
Attribute_Definition: Formula used to calculate Ocean Erodible Area - AEC
Attribute_Definition_Source: NC DCM
Attribute:
Attribute_Label: SBF_2011
Attribute_Definition: Construction Setback Factor (SBF)
Attribute_Definition_Source: NC DCM
Overview_Description:
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NCDENR - Division of Coastal Management
Contact_Person: Ken Richardson
Contact_Position: GIS Analyst
Contact_Address:
Address_Type: mailing address
Address: 400 Commerce Avenue
City: Morehead City
State_or_Province: NC
Postal_Code: 28557
Country: US
Contact_Voice_Telephone: 252-808-2808 ext. 225
Contact_Facsimile_Telephone: 252-247-3330
Contact_Electronic_Mail_Address: ken.richardson@ncdenr.gov
Hours_of_Service: 8:00 AM to 5:00 PM, EST (Monday - Friday)
Resource_Description: <http://www.nccoastalmanagement.net>
Distribution_Liability:
Geographic Information Systems (GIS) of NC DENR- Division of Coastal Management maintains databases and data files developed and operated by the State of North Carolina. Anyone requesting an electronic copy of said data files or databases, whether on magnetic tape, magnetic disc, compact disc, photo-optional devise, or electronic mail shall agree in writing that any such copy will not be resold, used for trade, or wrongly manipulated (edited).
These data contain non-surveyed information; therefore, the user of this data, in their individual capacity, and as representative of their respective firms, also agrees herby that the State of North Carolina assumes no legal responsibility for nature of, contents of or accuracy of any information contained in this data and that data may not be accurate or up to date and must be verified by recipient. The user of this data also agrees that the State of North Carolina is not liable for the use or misuse of this data.
The user of this data, in their individual capacity, and as representative of their respective firms, agrees hereby that any such data, whether on magnetic tape, magnetic disc, compact disc, photo-optional devise, or electronic mail shall not be resold, used for trade, or wrongly manipulated (edited) whatsoever. Violations of this agreement will result in civil or criminal sanctions, at the election of the appropriate State of North Carolina Official.
Standard_Order_Process:
Non-digital_Form: Paper Map
Fees: Varies based on media size (Paper Map)
Ordering_Instructions:
email: Ken Richardson ken.richardson@ncdenr.gov
Turnaround: Varies based on scope of project (ie: number of maps needed)
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Shapefile
File_Decompression_Technique: Zipped
Transfer_Size: 0.639
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://www.nccoastalmanagement.net>
Offline_Option:
Offline_Media: CD-ROM
Fees: Reflective of media cost (ie. CD-ROM)
Ordering_Instructions:
Contact: NCDENR - Division of Coastal Management GIS 1638 Mail Service Center Raleigh, NC 27699-1638
Phone: 919.733.2293 Fax: 919.733.1495
Turnaround: 7 to 10 working days (Monday - Friday) State holidays excluded
Custom_Order_Process:
Contact: NCDENR - Division of Coastal Management GIS 400 Commerce Avenue Morehead City, NC 28557
Phone: 919.733.2293 Fax: 919.733.1495
Available_Time_Period:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: current
Metadata_Reference_Information:
Metadata_Date: 20130131
Metadata_Review_Date: 20030821
Metadata_Future_Review_Date: As Needed
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NCDENR - Division of Coastal Management
Contact_Person: Ken Richardson
Contact_Position: GIS Analyst
Contact_Address:
Address_Type: mailing address
Address: 400 Commerce Avenue
City: Morehead City
State_or_Province: NC
Postal_Code: 28557
Country: US
Contact_Voice_Telephone: 252-808-2808 ext. 225
Contact_Facsimile_Telephone: 252-247-3330
Contact_Electronic_Mail_Address: ken.richardson@ncdenr.gov
Hours_of_Service: 8:00 AM to 5:00 PM, EST (Monday - Friday)
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None
Metadata_Security_Information:
Metadata_Security_Classification: Unclassified
Metadata_Extensions:
Online_Linkage: <http://www.nccoastalmanagement.net>
Profile_Name: North Carolina Division of Coastal Management
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Generated by mp version 2.9.6 on Thu Jan 31 08:48:03 2013