20230127
11085600
FALSE
20190608
03525500
20190608
03525500
county_poly
002
551335.899962
659220.498847
470079.685510
670021.782720
1
Projected
GCS_North_American_1983
NAD_1983_StatePlane_Delaware_FIPS_0700_Feet
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Linear Unit: Foot_US (0.304801)
1.0
FGDC
Sandra Janowski
New Castle County Mapping & GIS
302-395-5558
87 Reads Way
New Castle
DE
19720
US
sjanowski@nccde.org
Program Analyst
20190608
ArcGIS Metadata
1.0
FEMA, Mapping Information Platform
1-877-336-2627
500 C Street, S.W.
Washington
District of Columbia
20472
US
miphelp@mapmodteam.com
Data requests must include the full name of the community or county and the FIRM panel number(s) or the 7.5- minute series quadrangle sheet area(s) covered by the request.
Contact Distributor
Feature Class
http://hazards.fema.gov
http://hazards.fema.gov
County Polygon
20110413
New Castle County Department of Administrative Services
87 Reads Way
New Castle
Delaware
19720
sjanowski@nccde.org
USA
302-395-5558
302-395-5551
8 am to 4 pm EST
Mapping & GIS
New Castle County
Mapping and GIS
87 Reads Way
New Castle
Delaware
19720
sjanowski@nccde.org
USA
302-395-5558
302-395-5551
County Boundary
New Castle County
New Castle County Mapping & GIS
Information Services
Department of Administrative Services
<DIV>FEMA Framework Basemap datasets comprise six of the seven FGDC themes of geospatial data that are used by most GIS applications (Note: the seventh framework theme, orthographic imagery, is packaged in a separate NFIP Metadata Profile): cadastral, geodetic control, governmental unit, transportation, general structures, hydrography (water areas & lines. These data include an encoding of the geographic extent of the features and a minimal number of attributes needed to identify and describe the features. (Source: Circular A16, p. 13)</DIV>
The Basemap datasets reflect the reference features (i.e., roads, streets, hydrographic features, political jurisdiction boundaries) needed by users to locate properties on FIRMs. (Source: Guidelines and Specifications Vol 1, p. 68)
COMMUNITY name
STATE ss
FEMA-CID 000000
COUNTY-FIPS 0000
REGION 00
COUNTY name
FEMA NFIP Topic Category
Basemap
ISO 19115 Topic Category
transportation
New Castle County
Delaware
FEMA-CID 000000
COUNTY-FIPS 10003
Basemap
REGION 00
COUNTY New Castle
Access constraints: None
Use constraints: Acknowledgement of FEMA would be appreciated in products derived from these data. This digital data is produced for the purposes of updating/creating a DFIRM database.
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.
-75.789971
-75.405792
39.290132
39.839625
1
FIRM and FIS Effective Date
20030505
1
Esri ArcGIS 10.6.1.9270
002
Polygons intersecting the neatline are closed along the border. Segments making up the outer and inner boundaries of a polygon tie end-to-end to completely enclose the area. Line segments are a set of sequentially numbered coordinate pairs. No duplicate features exist nor duplicate points in a data string. Intersecting lines are separated into individual line segments at the point of intersection. Point data are represented by two sets of coordinate pairs, each with the same coordinate values. Tests for logical consistency are performed by DFIRM tools topology verification software.
Polygons intersecting the neatline are closed along the border. Segments making up the outer and inner boundaries of a polygon tie end-to-end to completely enclose the area. Line segments are a set of sequentially numbered coordinate pairs. No duplicate features exist nor duplicate points in a data string. Intersecting lines are separated into individual line segments at the point of intersection. Point data are represented by two sets of coordinate pairs, each with the same coordinate values. Tests for logical consistency are performed by DFIRM tools topology verification software.
The Basemap datasets represents all the features utilized during the study mapping process to spatially position the DFIRM information and highlights the specific prioritization process laid out in the Guidelines and Specifications Vol 1, p. 69 in their selection for use. The final selection criteria, and rational for inclusion should be outlined here, along with rational for exclusion of use of specific base map datasets if applicable.
The NSSDA is used to report the horizontal accuracy of the base map data used by FEMA to produce a FIRM. The NSSDA uses radial accuracy (Accuracy) to report the radius of a circle of uncertainty, such that the true or theoretical location of a point falls within that circle 95 percent of the time. (Guidelines and Specifications Vol 1, p. 70)
The minimum horizontal positional accuracy for new FIRM base map data is that of the default base map, the USGS DOQs, which have an NSSDA radial accuracy of 38 feet. Data that meet higher accuracy standards are also acceptable. Accuracy of 38 feet is the same as radial root mean square error (RMSEr) of 22 feet. (Guidelines and Specifications Vol 1, p. 70)
11.5824
All Flood Map Projects that will result in a digital FIRM require a digital base map that reflects reference features (i.e., roads, streets, hydrographic features, political jurisdiction boundaries) needed by users to locate properties on FIRMs. During the Project Scoping phase, the Project Team identified the base map to be used and assign the Mapping Partner responsible for obtaining the base map for use by FEMA for FIRM production. Early coordination with all communities affected by a Flood Map Project is an important part of the Project Scoping Process described in Section 1.3 of these Guidelines. Therefore, the Section 1.4 1-68 Guidelines and Specifications for Flood Hazard Mapping Partners [April 2003] Mapping Partner responsible for preparing the Preliminary version of the FIRM or another assigned Mapping Partner shall send a letter to each affected community that: Describes the FIRM product; Requests pertinent information (pertinent information that is requested includes base map data; a current corporate limits map; elevation data [either electronic or hardcopy] and any engineering information that needs to be updated or added to the FIRM); Describes the minimum requirements for the submittal of data to be included in the new FIRM product, and Identifies the base map source that will be used if community data are not available or suitable. A sample version of this letter and other correspondence that may be generated during the Map Production phase of the project are presented in the FEMA Document Control Procedures Manual (FEMA, 2000).
20030505
dataset
EPSG
5.3(9.0.0)
Simple
FALSE
0
TRUE
FALSE
0
county_poly
Feature Class
0
OBJECTID
OBJECTID
OID
4
10
0
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
SHAPE
Shape
Geometry
8
0
0
Feature geometry.
ESRI
Coordinates defining the features.
created_user
created_user
String
255
0
0
created_date
created_date
Date
8
0
0
last_edited_user
last_edited_user
String
255
0
0
last_edited_date
last_edited_date
Date
8
0
0
SHAPE.STArea()
SHAPE.STArea()
Double
0
0
0
SHAPE.STLength()
SHAPE.STLength()
Double
0
0
0
County83F
False
0
False
0
False
False
0
False
0