Current 100-Year Flood Zones - (AE Floodways only) - DFIRM

Frequently-anticipated questions:

• What does this data set describe?
  1. How should this data set be cited?
  2. What geographic area does the data set cover?
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
• Who produced the data set?
  1. Who are the originators of the data set?
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
• Why was the data set created?
• How was the data set created?
  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
  3. What similar or related data should the user be aware of?
• How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
  5. How consistent are the relationships among the data, including topology?
• How can someone get a copy of the data set?
  1. Are there legal restrictions on access or use of the data?
  2. Who distributes the data?
  3. What's the catalog number I need to order this data set?
  4. What legal disclaimers am I supposed to read?
  5. How can I download or order the data?
• Who wrote the metadata?

What does this data set describe?

1. How should this data set be cited?

   Clark County Regional Flood Control District, September, 2002, Current 100-Year Flood Zones - (AE Floodways only) - DFIRM:, Clark County Regional Flood Control District, Las Vegas, Nevada.

   Online Links:

   • <ftp://www.ccrfcd.org/Shapefiles/>

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -115.294780

   East_Bounding_Coordinate: -114.049867

   North_Bounding_Coordinate: 36.813747

   South_Bounding_Coordinate: 34.996302

3. What does it look like?

   <http://www.ccrfcd.org/images/gis_metadata/fwcur.jpg> (JPEG)

   100-Year Floodways - DFIRM

4. Does the data set describe conditions during a particular time period?

   Beginning_Date: September, 2002

   Currentness_Reference: ground condition

5. What is the general form of this data set?

   Geospatial_Data_Presentation_Form: vector digital data

6. How does the data set represent geographic features?
   1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • G-polygon (110)
      • Label point (742)
      • GT-polygon composed of chains (741)
      • Point (1)

   2. What coordinate system is used to represent geographic features?

      The map projection used is Transverse Mercator.

      Projection parameters:

      Scale_Factor_at_Central_Meridian: 0.999900

      Longitude_of_Central_Meridian: -115.583333

      Latitude_of_Projection_Origin: 34.750000

      False_Easting: 656166.666667

      False_Northing: 26246666.666667

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.000328
      Ordinates (y-coordinates) are specified to the nearest 0.000328
      Planar coordinates are specified in survey feet

      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257222.
      

      Vertical_Coordinate_System_Definition:

      Altitude_System_Definition:

      Altitude_Resolution: 1.000000

      Altitude_Encoding_Method:

      Explicit elevation coordinate included with horizontal coordinates

7. How does the data set describe geographic features?

   gismo.RFCGIS.fwcur_p

   Polygon dataset of 100-year AE zones (floodway) from DFIRM (Source: FEMA)

   OBJECTID_1

   Internal feature number. (Source: ESRI)

   Frequency of measurement: Unknown

   Sequential unique whole numbers that are automatically generated.

   OBJECTID

   Internal feature number. (Source: ESRI)

   Frequency of measurement: Unknown

   Sequential unique whole numbers that are automatically generated.

   gismo.RFCGIS.fwcur_p.AREA

   Manually calculated area (Source: CCRFCD)

   Frequency of measurement: As needed

   Shape

   Feature geometry. (Source: ESRI)

   Frequency of measurement: Unknown

   Coordinates defining the features.

   PERIMETER

   Internally calculated (Source: ESRI)

   Frequency of measurement: Unknown

   FZCUR_

   MINOR1

   FEMA code value of flood zone type (Source: FEMA)

   Frequency of measurement: Unknown

   Value	Definition
   153	FEMA Code for Zone AE

   FLOODWAY

   Floodway polygon is True (Source: FEMA)

   Frequency of measurement: Unknown

   Value	Definition
   T	Polygon is a floodway

   FZCUR_ID

   FZONE

   Translation from code to text (Source: CCRFCD)

   Frequency of measurement: Unknown

   Value	Definition
   Zone AE	Polygon is a floodway

   GID_area

   Internally calculated area (Source: ESRI)

   Frequency of measurement: Unknown

   GID_len

   Internally calculated length (Source: ESRI)

   Frequency of measurement: Unknown

   Shape.area

   Internally calculated area (Source: ESRI)

   Frequency of measurement: Unknown

   Shape.len

   Internally calculated length (Source: ESRI)

   Frequency of measurement: Unknown

   Entity_and_Attribute_Overview:

   All polygons in this layer are polygons where the field MINOR! has the value of '153', the field FLOODWAY has the value of 'T', and the field FZONE has the value of 'ZONE AE'.

Who produced the data set?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • Clark County Regional Flood Control District

2. Who also contributed to the data set?

   Michael Baker, Inc

3. To whom should users address questions about the data?
   Clark County Regional Flood Control District
   Systems Administrator
   600 S. Grand Central Pkwy
   Las Vegas, Nevada 89106-4511
   USA
   

   702-685-0000 (voice)
   702-685-0001 (FAX)
   Administrator@regionalflood.org
   

   Hours_of_Service: 8:00 A.M. to 5:00 P.M. (Pacific Standard Time)

Why was the data set created?

This dataset was created for display and analysis of current 100-year flood zones classified as Zone AE (in a floodway )in Clark County, Nevada. It is usually displayed when only floodway polygons only are of interest. The dataset fzcur contains the complete 100-year flood zones in Clark County.

How was the data set created?

1. From what previous works were the data drawn?

   (source 1 of 1)

2. How were the data generated, processed, and modified?

   (process 1 of 3)

   Person who carried out this activity:
   

   Clark County Regional Flood Control District
   Systems Administrator
   600 S. Grand Central Pkwy
   Las Vegas, Nevada 89106-4511
   USA
   

   702-685-0000 (voice)
   702-685-0001 (FAX)
   administrator@regionalflood.org
   

   Hours_of_Service: 8:00 A.M. to 5:00 P.M. (Pacific Standard Time)

   (process 2 of 3)

   Metadata imported.

   Data sources used in this process:

   • T:\RFCD\GISDocs\Metadata Templates\fzcur.shp.xml

   Date: 14-Nov-2008 (process 3 of 3)

   Dataset copied.

   Data sources used in this process:

   • Server=acequia; Service=esri_sde; Database=gismo; User=rfcgis; Version=sde.DEFAULT

3. What similar or related data should the user be aware of?

   .

How reliable are the data; what problems remain in the data set?

1. How well have the observations been checked?

   None

2. How accurate are the geographic locations?

   None

3. How accurate are the heights or depths?

   None

4. Where are the gaps in the data? What is missing?

   None

5. How consistent are the relationships among the observations, including topology?

   None

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: None

Use_Constraints: None

1. Who distributes the data set? (Distributor 1 of 1)
   Clark County Regional Flood Control District
   Systems Administrator
   600 S. Grand Central Pkwy
   Las Vegas, Nevada 89106-4511
   USA
   

   702-685-0000 (voice)
   702-685-0001 (FAX)
   Administrrator@regionalflood.org
   

   Hours_of_Service: 8:00 A.M. to 5:00 P.M. (Pacific Standard Time)

2. What's the catalog number I need to order this data set?

   Downloadable Data

3. What legal disclaimers am I supposed to read?

   None

4. How can I download or order the data?
   • Availability in digital form:

     Data format:	Size: 0.213
     Network links:	<ftp://www.ccrfcd.org/Shapefiles> <ftp://www.ccrfcd.org/Shapefiles>
     Media you can order:	na (Density na na) (format na) Note: na

   • Cost to order the data: None

5. Is there some other way to get the data?

   None

6. What hardware or software do I need in order to use the data set?

   None

Who wrote the metadata?

Dates:

Last modified: 29-Sep-2009
Last Reviewed: na
To be reviewed: na

Metadata author:

Clark County Regional Flood Control District
Systems Administrator
600 S. Grand Central Pkwy
Las Vegas, Nevada 89106-4511
USA

702-685-0000 (voice)
702-685-0001 (FAX)
Administrator@regionalflood.org

Hours_of_Service: 8:00 A.M. to 5:00 P.M. (Pacific Standard Time)

Metadata standard:

FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

Metadata extensions used:

• <http://www.esri.com/metadata/esriprof80.html>