Major Washes in the Las Vegas Valley

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   Clark County Regional Flood Control District, Unpublished Material, Major Washes in the Las Vegas Valley: Clark County Regional Flood Control District, Clark County, Nevada.

   Online Links:

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

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -115.376164

   East_Bounding_Coordinate: -114.934072

   North_Bounding_Coordinate: 36.353803

   South_Bounding_Coordinate: 35.998749

3. What does it look like?

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

   Major Washes in the Las Vegas Valley

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

   Calendar_Date: unknown

   Time_of_Day: unknown

   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):

      • String (18)
      • Point (128)
      • Label point (11)

   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.majorwashes

   None (Source: unknown)

   LENGTH

   Length of feature in internal units. (Source: ESRI)

   Positive real numbers that are automatically generated.

   OBJECTID

   Internal feature number. (Source: ESRI)

   Sequential unique whole numbers that are automatically generated.

   WASHNAME

   Name of wash (Source: CCRFCD)

   Frequency of measurement: None planned

   FNODE_

   Shape

   Feature geometry. (Source: ESRI)

   Coordinates defining the features.

   TNODE_

   LPOLY_

   RPOLY_

   MAJORWASHE

   MAJORWAS_1

   Shape.len

   Entity_and_Attribute_Overview:

   The field washname can be used to identify the name of the wash.

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?

   None

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?

The purpose of this dataset is for display and identification of major washes in the Las Vegas Valley. These washes are also Clark County Regional Flood Control District master plan flood control facilities. It is primarily used to display the location of major washes within the Las Vegas valley.

How was the data set created?

1. From what previous works were the data drawn?

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

   Date: Unknown (process 1 of 1)

   None

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
   GIS 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)

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: 0.035

   • 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

Metadata author:

Clark County Regional Flood Control District
c/o Systems Administrator
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>