Metadata for Clark Fork River 100-year floodplain, 1988 Metadata for Clark Fork River 100-year floodplain, 1988

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Identification Information:

Citation:

Originator: Montana State Library

Publication date: 10/11/1995

Title: Clark Fork River 100-year floodplain, 1988

Publication place: Helena, Montana
Publisher: Montana State Library

Other citation details:

The former name of this data set on the NRIS web site was "fp101"

Larger Work Citation:

Title:: GIS Layers for Clark Fork Superfund Sites, Montana, 1988-2000
Online linkage: http://mslapps.mt.gov/Geographic_Information/Data/DataList/datalist_Details.aspx?did={33b14155-3366-42a0-b50c-1e21d5224fe0}

Browse graphic file name: http://docs.msl.mt.gov/geoinfo/images/metadata/superfund/ClarkForkFloodplain1988.gif

Abstract:

These data were formerly available from the Montana State Library web site but were removed because they are potentially out of date. Please contact the Federal Superfund Bureau of the Montana Department of Environmental Quality if you want these data so they may tell you if newer or better data are available. If the data are not available from the Department of Environmental Quality, you may request a copy from the Montana State Library data archive.

Clark Fork River 100-year floodplain, digitized from FEMA maps, with additional delineation of historical floodplain at the time of the 1908 flood, before highway and railroad construction. The city of Drummond is not mapped on the FEMA maps -- lines through this area were extended along the railroad and roads by the State Library.

Time period of content:

Beginning date: 04/12/1974
Ending date: 08/16/1988
Currentness reference: Publication Date

Status:

Progress: Complete

Access constraints: None

Use constraints:

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:

Montana State Library
PO Box 201800
Helena, MT 59620-1800
Telephone: 406-444-5354
TDD/TTY telephone: Montana Relay 711
Fax: 406-444-0266
E-Mail: geoinfo@mt.gov

Data Quality Information:

Attribute accuracy report:

It was not clear at the State Library which of the polygons that are completely surrounded by FEMA floodplain were intended by the UM to be inside the Historical floodplain.

Horizontal Positional Accuracy Report:

Approximate horizontal accuracy is 12 meters, assuming source data meets National Map Accuracy Standards.

Lineage:

Source information:

Originator: Federal Emergency Management Agency
Publication date: Unpublished material
Title: Flood Insurance Rate Map, Deer Lodge County
Other citation details: Published in 3 sheets, 3000017-225B, 245B, and 065B
Source scale denominator: 12000
Type of source media: Paper
Source contribution:: This is the source of the FEMA floodplain in Deer Lodge County.
Calendar date: 04/12/1974

Source information:

Originator: Federal Emergency Management Agency
Publication date: Unpublished material
Title: Flood Insurance Rate Map, Powell County
Other citation details:: 7 sheets, scales 1:12,000 and 1:24,000. Map #300059-1100B, 1125B, 1150B, 1175B, 1310B, 1330B, 1340B, 1525B
Source scale denominator: 24000
Type of source media: paper
Source contribution: This is the source of the FEMA floodplain in Powell County.
Calendar date: 09/16/1980

Source information:

Originator: Federal Emergency Management Agency
Publication date: Unpublished material
Title: Flood Insurance Rate Map, Granite County
Other citation details:: 12 sheets, scales 1:6,000; 1:12,000; and 1:24,000. Map numbers 300141 0130A - 0425A
Source scale denominator: 24000
Type of source media: paper
Source contribution: This is the source of the FEMA floodplain in Granite County.
Calendar date: 07/05/1982

Source information:

Originator: Federal Emergency Management Agency
Publication date: Unpublished material
Title: Flood Insurance Rate Map, Missoula County
Other citation details:: 1:12,000 and 1:24,000 scale maps, sheets 30063C 1485D, 1505D, 1510D, 1520D, 1540D, 1850D, 1875D
Source scale denominator: 24000
Type of source media: paper
Source contribution: This is the source of the FEMA floodplain in Missoula County
Calendar date: 08/16/1988

Source information:

Originator:: Montana Riparian/Wetland Reasearch Program
University of Montana
Publication date: Unpublished material
Title: Clark Fork Historic Floodplain
Other citation details:: Digitized free-hand, based on FEMA maps and 5-foot contours digitized from 1991 aerial photographs by Horizons, Inc.
Source scale denominator: 24000
Type of source media: paper
Source contribution: This is the source of the Historic floodplain data.
Calendar date: 1995

Process step:

Connect dangling edges from U of M data and interpret which areas were from the original maps and which are the 1908 floodplain added by U of M.


Process date: 10/11/1995

Spatial Data Organization Information:

Point and vector object information:

SDTS object type: Complete Chain

SDTS object count: 294

SDTS object type: GT-polygon composed of chains

SDTS object count: 85

SDTS object type: Area Point

SDTS object count: 84

Spatial Reference Information:

Horizontal coordinate system definition:

Grid coordinate system name: State Plane Coordinate System 1983

SPCS zone identifier: 2500

Lambert conformal conic:

Standard parallel: 45
Standard parallel: 49
Longitude of central meridian: -109.5
Latitude of projection origin: 44.25
False easting: 600000.00000
False northing: 0.00000

Planar distance units: meters

Geodetic model:

Horizontal datum name: North American Datum of 1983
Ellipsoid name: Geodetic Reference System 80
Semi-major axis: 6378137
Denominator of flattening ratio: 298.257

Entity and Attribute Information:

Entity type label: FLOODPLN.AAT

Entity type definition: Arc Attribute Table

Attribute label: LENGTH

Attribute definition: Length of line
Range domain minimum: 3.400000095367
Range domain maximum: 20410
Attribute units of measure: METERS

Attribute label: DXF-LAYER

Attribute definition:: Data Source
Distinguishes arcs digitized from FEMA maps, arcs added by U of M as Historical Floodplain and arcs added at the State Library to close the polygons.

Entity type label: FLOODPLN.PAT

Entity type definition: Polygon Attribute Table

Attribute label: AREA

Attribute definition: Area of polygon
Range domain minimum: 51
Range domain maximum: 49560464
Attribute units of measure: Square METERS

Attribute label: PERIMETER

Attribute definition: Perimeter of polygon
Range domain minimum: 42
Range domain maximum: 244335
Attribute units of measure: METERS

Attribute label: CODE

Attribute definition: Floodplain type code

Distribution Information:

Distributor:

Montana State Library
PO Box 201800
Helena, MT 59620-1800
Telephone: 406-444-5354
Telephone: 406-444-5354
E-Mail: geoinfo@mt.gov
E-Mail: geoinfo@mt.gov

Resource description: Offline Data

Distribution liability:

Metadata Reference Information:

Metadata date: 02/25/2014

Metadata review date: 05/26/2010

Metadata review date: 09/29/2004

Metadata review date: 11/21/1995

Metadata review date: 10/05/1996

Metadata contact:

Montana State Library
PO Box 201800
Helena, MT 59620-1800
Telephone: 406-444-5354
E-Mail: geoinfo@mt.gov