Metadata for Yellowstone River Predicted Flood Inundation Area Metadata for Yellowstone River Predicted Flood Inundation Area

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Identification Information:

Citation:

Originator: DTM Consulting, Inc.

Publication date: 01/16/2010

Title: Yellowstone River Predicted Flood Inundation Area

Publication place: Helena, MT
Publisher: Montana State Library

Online linkage: https://ftpgeoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Collections/Yellowstone_River_Clearinghouse/Geodatabases/Yellowstone_Inundation_07.zip

Larger Work Citation:

Title: Yellowstone River Clearinghouse GIS Layers
Online linkage: http://mslapps.mt.gov/Geographic_Information/Data/DataList/datalist_Details.aspx?did={17daa910-aba0-11e3-a5e2-0800200c9a66}

Abstract:

Preliminary, approximate 100-year flood boundary as defined by the inundation model. Some areas of the floodplain are designated as being potentially protected (cut off) from flooding by structures such as highways, railroads, and levees.

Purpose:

The inundation polygons illustrate the approximate area of inundation during the peak of a 100-year flood event. This boundary can be used as a tool to guide floodplain development. It is not intended to be used for the development of flood insurance rates.

Time period of content:

Calendar date: 04/16/2007
Currentness reference: publication date

Status:

Progress: Complete

Access constraints: None

Use constraints:

This is a preliminary dataset created with the best base elevation data available at the time of modeling. Should better elevation data become available, these data may change.

The Montana State Library provides this product/service for informational purposes only. The Library did not produce it for, nor is it suitable for legal, engineering, or surveying purposes. Consumers of this information should review or consult the primary data and information sources to ascertain the viability of the information for their purposes. The Library provides these data in good faith but does not represent or warrant its accuracy, adequacy, or completeness. In no event shall the Library be liable for any incorrect results or analysis; any direct, indirect, special, or consequential damages to any party; or any lost profits arising out of or in connection with the use or the inability to use the data or the services provided. The Library makes these data and services available as a convenience to the public, and for no other purpose. The Library reserves the right to change or revise published data and/or services at any time.

Point of contact:

DTM Consulting, Inc.
211 N Grand Ave, Suite J
Bozeman, MT 59715
Telephone: 406-585-5322

Data set credit: DTM Consulting, Inc.

Data Quality Information:

Lineage:

Process step:: Polygons were drawn around the outermost extent of the inundation model rasters. Deviations from the model were made where personal knowledge or other geographic data superceded the model results.

Spatial Data Organization Information:

Point and vector object information:

SDTS object type: G-polygon

SDTS object count: 14

Spatial Reference Information:

Horizontal coordinate system definition:

Grid coordinate system name: State Plane Coordinate System

SPCS zone identifier: 2500

Lambert conformal conic:

Standard parallel: 45.000000
Standard parallel: 49.000000
Longitude of central meridian: -109.500000
Latitude of projection origin: 44.250000
False easting: 600000.000000
False northing: 0.000000

Planar distance units: meters

Geodetic model:

Horizontal datum name: North American Datum of 1983
Ellipsoid name: Geodetic Reference System 80
Semi-major axis: 6378137.000000
Denominator of flattening ratio: 298.257222

Altitude system definition:

Altitude resolution: 0.100000
Altitude encoding method:: Explicit elevation coordinate included with horizontal coordinates

Entity and Attribute Information:

Entity type label:

Inund_Polys_032907

Attribute label: OBJECTID

Attribute definition: Internal feature number.

Attribute label: Shape

Attribute definition: Feature geometry.

Attribute label: CUTOFF

Attribute definition:: Y or N designates whether or not this area of the floodplain that are potentially protected from flooding by structures such as highways, railroads, and levees.

Attribute label: Shape_Length