Cross Sections Used in the Hydraulic Model for Generating Flood Boundaries on the Winooski River in Waterbury, Vermont

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Frequently anticipated questions:


What does this data set describe?

Title:
Cross Sections Used in the Hydraulic Model for Generating Flood Boundaries on the Winooski River in Waterbury, Vermont
Abstract:
Digital shapefile of the riverine cross sections used in the development of the hydraulic model for estimating flooding of the Winooski River was created by the U.S. Geological Survey (USGS) in cooperation with the Federal Emergency Management Agency (FEMA) for a 8.3-mile reach of the Winooski River from about 1,000 feet downstream of the Waterbury-Bolton town line upstream to about 2,000 feet upstream of the Waterbury-Middlesex town line.
  1. How should this data set be cited?

    Scott Olson, U.S. Geological Survey, 20150228, Cross Sections Used in the Hydraulic Model for Generating Flood Boundaries on the Winooski River in Waterbury, Vermont: Scientific Investigations Report 2015-5077.

    Other_Citation_Details:
    Additional details regarding the shapefile and its development can be found in Olson, S.A., 2015, Flood maps for the Winooski River in Waterbury, Vermont, 2014: U.S. Geological Survey Scientific Investigations Report 2015-5077, xx p.
    This is part of the following larger work.

    U.S. Geological Survey, 20150331, Flood maps for the Winooski River in Waterbury, Vermont, 2014: U.S. Geological Survey Scientific Investigations Report 2015-5077.

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -72.830605
    East_Bounding_Coordinate: -72.708903
    North_Bounding_Coordinate: 44.363046
    South_Bounding_Coordinate: 44.309722

  3. What does it look like?

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

    Calendar_Date: 04-Dec-2014
    Currentness_Reference: Generated in 2014

  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 (57)

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

      The map projection used is NAD 1983 StatePlane Vermont FIPS 4400 Feet.

      Projection parameters:
      Scale_Factor_at_Central_Meridian: 0.9999642857142858
      Longitude_of_Central_Meridian: -72.5
      Latitude_of_Projection_Origin: 42.5
      False_Easting: 1640416.666666667
      False_Northing: 0.0

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.0003280833333333333
      Ordinates (y-coordinates) are specified to the nearest 0.0003280833333333333
      Planar coordinates are specified in foot_us

      The horizontal datum used is D North American 1983.
      The ellipsoid used is GRS 1980.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257222101.

  7. How does the data set describe geographic features?

    CrossSections
    Riverine cross sections (Source: Author)

    Shape
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    RiverCode
    Name of river (Source: Author)

    Name of river

    ReachCode
    Brief description of river reach (Source: Author)

    River reach description

    ProfileM
    River stationing. Distance from downstream end of studied river in feet. (Source: Author)

    Positive real numbers indicating river length from downstream end of studied river.

    OID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    P001
    Water-surface profile of the 10-percent annual exceedance probability flood, elevations in feet, North American Vertical Datum of 1988. (Source: Author)

    Elevations

    P002
    Water-surface profile of the 4-percent annual exceedance probability flood, elevations in feet, North American Vertical Datum of 1988. (Source: Author)

    Elevations

    P003
    Water-surface profile of the 2-percent annual exceedance probability flood, elevations in feet, North American Vertical Datum of 1988. (Source: Author)

    Elevations

    P004
    Water-surface profile of the 1-percent annual exceedance probability flood, elevations in feet, North American Vertical Datum of 1988. (Source: Author)

    Elevations

    P005
    Water-surface profile of the 0.2-percent annual exceedance probability flood, elevations in feet, North American Vertical Datum of 1988. (Source: Author)

    Elevations

    P006
    Water-surface profile of the floodway, elevations in feet, North American Vertical Datum of 1988. (Source: Author)

    Elevations

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

    Positive real numbers that are automatically generated.

    Section_ID
    Cross-section identifier (Source: Author)

    Cross-section identifier


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?

    U.S. Geological Survey, New England Water Science Center, in cooperation with the Federal Emergency Management Agency (FEMA).

  3. To whom should users address questions about the data?


Why was the data set created?

The cross section locations used in the development of the hydraulic model for estimating flooding of the Winooski River


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?

    Complete for the intended 8.3-mile reach of the Winooski River in Waterbury, Vermont.

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

    A separate review of the modeled flood extents and elevations was conducted.


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:
Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. The flood boundaries shown were estimated using steady-state hydraulic modeling (assuming unobstructed flow) and a digital elevation model. The hydraulic model reflects the land-cover characteristics and any bridge, dam, levee, or other hydraulic structures existing July 2013. Unique meteorological factors (timing and distribution of storm) could cause actual streamflows along the modeled reach to vary from those assumed during a flood, which may lead to deviations from the water-surface elevations and boundaries shown here. Additional areas may be flooded owing to unanticipated backwater from major tributaries along the main stem or from localized debris- or ice-jams. Inundated areas shown should not be used for navigation, regulatory, permitting, or other legal purposes. The USGS provides these maps as a planning tool but assumes no legal liability or responsibility resulting from the use of this information.

  1. Who distributes the data set? (Distributor 1 of 1)

    U.S. Geological Survey
    Reston, Virginia

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

  3. What legal disclaimers am I supposed to read?

    Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. The flood boundaries shown were estimated using steady-state hydraulic modeling (assuming unobstructed flow) and a digital elevation model. The hydraulic model reflects the land-cover characteristics and any bridge, dam, levee, or other hydraulic structures existing July 2013. Unique meteorological factors (timing and distribution of storm) could cause actual streamflows along the modeled reach to vary from those assumed during a flood, which may lead to deviations from the water-surface elevations and boundaries shown here. Additional areas may be flooded owing to unanticipated backwater from major tributaries along the main stem or from localized debris- or ice-jams. Inundated areas shown should not be used for navigation, regulatory, permitting, or other legal purposes. The USGS provides these maps as a planning tool but assumes no legal liability or responsibility resulting from the use of this information.

  4. How can I download or order the data?


Who wrote the metadata?

Dates:
Last modified: 02-Jun-2015
Metadata author:
U.S. Geological Survey
Attn: Scott Olson
331 Commerce Way
Pembroke, New Hampshire 03275
US

603-226-7800 (voice)

Metadata standard:
FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)


Generated by mp version 2.9.16 on Tue Jun 02 10:36:53 2015