Flood Control Watersheds in Clark County - MPU

Metadata also available as

Frequently-anticipated questions:

What does this data set describe?

Title: Flood Control Watersheds in Clark County - MPU
Abstract:
This polygon dataset represents watershed and watershed sub-basin boundaries provided by various flood control master plans for Clark County, Nevada. Watersheds and sub-basins are by the engineering firm(s) contracted to complete the master plan update process.
Supplemental_Information:
This dataset was created by appending various watershed datasets from the various master plan updates into one dataset comprising watershed boundaries for Clark County, Nevada. The original watershed datasets are delivered to the Regional Flood Control District as a product of a flood control master plan update and may not contain completely populated fields.
  1. How should this data set be cited?

    Clark County Regional Flood Control District, Flood Control Watersheds in Clark County - MPU: Clark County Regional Flood Control District, Clark County, Nevada.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -115.713404
    East_Bounding_Coordinate: -114.043997
    North_Bounding_Coordinate: 36.976148
    South_Bounding_Coordinate: 35.030035

  3. What does it look like?

    <http://www.ccrfcd.org/images/gis_metadata/watersheds.jpg> (JPEG)
    Flood Control Watershed Boundaries in Clark County - MPU

  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):

      • G-polygon (2717)
      • Label point (2352)
      • GT-polygon composed of chains (2352)
      • Point (4)

    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 0.000038
      Ordinates (y-coordinates) are specified to the nearest 0.000038
      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.watersheds_polygon
    Polygon feature class (Source: CCRFCD)

    Shape
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    BASINID
    Sub-basin Identifier (Source: Master Plan Update)

    Frequency of measurement: None planned

    WCN
    Weighted curve number (Source: Master Plan Update)

    Frequency of measurement: None planned

    RAIN
    Rainfall in inches for each basin (Source: Master Plan Update)

    Frequency of measurement: None planned

    MPU
    Master plan area (Source: CCRFCD)

    Frequency of measurement: None planned

    WATERSHED
    Name of watershed (Source: Master Plan Update)

    Frequency of measurement: None planned

    OBJECTID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    AREA_SQFT
    Area of feature in square feet. (Source: PBS&J)

    AREA_SQMI
    Area of feature in square miles (Source: PBS&J)

    Shape.area

    Shape.len

    Entity_and_Attribute_Overview:
    Identification of watershed is with the field WATERSHED and identification of the sub-basin is with the field BASINID.

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

    PBS&J, VTN of Nevada, GC Wallace

  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 can be used for symbolizing and interrogating watersheds and watershed sub-basins that have been defined by flood control master plans.

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 2)
    NA

    Person who carried out this activity:

    Clark County Regional Flood Control District
    Systems Admininstrator
    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 2)
    Dataset copied.

    Data sources used in this process:

    • g:\gisdata\stage\flood\prflood\prflood\export\watersheds

  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?

    NA

  2. How accurate are the geographic locations?

    NA

  3. How accurate are the heights or depths?

    NA

  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)
    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?

  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
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:

Generated by mp version 2.9.6 on Tue Sep 29 13:14:54 2009