Metadata for Montana Lakes Bathymetry
Identification Information:
Citation:
Originator: Montana Fish, Wildlife & Parks
Publication date: 03/12/2015
Title: Montana Lakes Bathymetry
Publisher: Montana Fish, Wildlife & Parks
Online linkage: http://fwp.mt.gov/gisData/shapefiles/lakesBathymetry.zip

Abstract:
Lakes bathymetry is a line feature-based layer that includes bathymetric information for selected reservoirs, lakes, and ponds in Montana. The layer is based on information collected by multiple sources including contractors with Montana Department of Environmental Quality, the Bureau of Reclamation, and Montana Fish, Wildlife & Parks. Data collection methods vary over time with techniques using a variety of different equipment including manual and electronic depth soundings, use of a GPS receiver, and digitizing previously published bathymetry maps. Data were compiled at a variety of scales and resolutions, depending on the collection method used for a particular waterbody. These data are planned to be regularly updated, however bathymetry information for addtional waterbodies may become available and included in this layer as new information is collected and compiled.
Purpose:
Shorelines, islands and contours are shown for lakes, ponds, and reservoirs. Most data were generated using depth and location data collected in the field.

Time period of content:
Calendar date: 02/19/2015
Currentness reference: publication date
Status:
Progress: In work
Maintenance and update frequency: Irregular
Access constraints:
Tongue River Reservoir bathymetric information is for internal FWP use only due to the copyright by Constellation Services.
Use constraints:
Not appropriate for all uses. Users must assume responsibility to determine the usability of this data for their purposes. This data set is provided "as is" without warranty of any kind. Montana Fish, Wildlife & Parks (FWP) makes no representations or warranties whatsoever with respect to the accuracy or completeness of this data set and assumes no responsibility for the suitability of this data set for a particular purpose. FWP will not be liable for any damages incurred as a result of errors in this data set.
Point of contact:
Adam Petersen
GIS Analyst/Technician
Montana Fish, Wildlife & Parks
1420 East 6th Ave
PO Box 200701
Helena, Montana 59620-0701


Telephone: 406-444-1275
E-Mail: apetersen@mt.gov


Data set credit:
The Montana Department of Environmental Quality and the Bureau of Reclamation contributed source information for some of the lakes in this layer.
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Data Quality Information:
Attribute accuracy report:
Data accuracy varies by source and also by method used to collect and analyze data for contour interpolation.

Lineage:

Process step:
Data were derived from a variety of sources including: 1. CAD files that were georeferenced in ArcGIS (v 9.2) to the 2005 color aerial photography available through the Natural Resource Information System at http://nris.mt.gov/nsdi/orthophotos/naip_2005.asp and then converted to ESRI shapefile format. 2. Pre-existing image files that were georeferenced from which lines were digitized on screen. 3. GPS depth and locations from which Triangulated Irregular Network (TIN) data were generated using ArcGIS. 4. Manual depth soundings. 5. Pre-existing shapefiles or feature classes sent to or shared with FWP by other cooperating agencies.
Process date: 02/18/2015
Process contact:
Adam Petersen
Fisheries Information Specialist
Montana Fish, Wildlife & Parks
1420 East 6th Ave
Helena, MT 59620-0701


Telephone: 406-444-3737
E-Mail: apetersen@mt.gov


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Spatial Data Organization Information:
Point and vector object information:
SDTS object type: String
SDTS object count: 24023
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Spatial Reference Information:
Horizontal coordinate system definition:
Map projection:
Map projection name: NAD 1983 StatePlane Montana FIPS 2500
Lambert conformal conic:
NAD 1983 StatePlane Montana FIPS 2500
Standard parallel: 45.0
Standard parallel: 49.0
Longitude of central meridian: -109.5
Latitude of projection origin: 44.25
False easting: 600000.0
False northing: 0.0
Planar distance units: meter
Geodetic model:
Horizontal datum name: D North American 1983
Ellipsoid name: GRS 1980
Semi-major axis: 6378137.0
Denominator of flattening ratio: 298.257222101
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Entity and Attribute Information:
Entity type label: BATHYMETRY

Attribute label: OBJECTID
Attribute definition: Internal feature number.
Attribute domain:
Sequential unique whole numbers that are automatically generated.

Attribute label: TYPE
Attribute definition: Classifies feature as a shoreline, depth contour, or island.


Attribute
Value
Definition of
Attribute Value
SShoreline
CDepth Contour
IIsland

Attribute label: CONTOUR
Attribute definition: Contour depth in feet

Attribute label: CREATED
Attribute definition: Date contour was created.

Attribute label: LASTEDIT
Attribute definition: Date contour was last modified

Attribute label: EDITOR
Attribute definition: Person responsible for last edit of contour line

Attribute label: CNTR_CMNT
Attribute definition: Comment on contour line.

Attribute label: LLID
Attribute definition: Waterbody unique identifier

Attribute label: SOURCE
Attribute definition:
Original data source for bathymetric contours; may be entity or file.

Attribute label: LAKENAME
Attribute definition: Name of waterbody.

Attribute label: AGENCY
Attribute definition: Agency responsible for data collection

Attribute label: SHAPE
Attribute definition: Feature geometry.
Attribute domain: Coordinates defining the features.

Attribute label: SHAPE.LEN
Attribute definition: Perimeter in meters.
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Distribution Information:
Distributor:
Lydia Bailey
GIS Manager
Montana Fish, Wildlife & Parks
1420 East 6th Ave
PO Box 200701
Helena, Montana 59620-0701


Telephone: 406-444-5365
E-Mail: lbailey@mt.gov


Resource description: downloadable data


Distribution liability: See access and use constraints information.

Standard order process:
Digital form:
Format name: Esri shapefile
Format version number: 3x
Online option:
http://fwp.mt.gov/gisData/shapefiles/lakesBathymetry.zip
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Metadata Reference Information:
Metadata date: 03/12/2015
Metadata contact:
Adam Petersen
GIS Analyst/Technician
Montana Fish, Wildlife & Parks
1420 East 6th Ave
PO Box 200701
Helena, Montana 59620-0701


Telephone: 406-444-1275
E-Mail: apetersen@mt.gov


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