Skip Maine state header navigation
bathym100
Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information
Identification Information
Section Index
Citation:
Citation Information:
Originator: Maine Department of Conservation (MEDOC), Maine Geological Survey (MGS)
Publication Date: 19991130
Publication Time: Unknown
Title: bathym100
Geospatial Data Presentation Form: vector digital data
Series Information:
Series Name: Maine GIS
Issue Identification: SDE server; Internet Data Catalog
Publication Information:
Publication Place: Augusta ME
Publisher: Maine Office of Geographic Information Systems
Other Citation Details: 1:100000
Online Linkage: http://megis.maine.gov/catalog/
Description:
Abstract:
BATHYM100 contains bathymetry lines for the Gulf of Maine at a scale of 1:100,000 showing depth in 10 meter intervals. This dataset was developed by the Maine Geological Survey using USGS 30 X 60 minute series topographic-bathymetric maps. Bathymetric contours are coded with depth in feet (10 meter interval mean lower low water datum) Spatial topology varies from good to poor.
Purpose:
Not intended for navigational purposes. Data at this scale is suitable for planning at studies at the regional level. Not intended for use in navigation. Not recommended for use at scales greater than 1:100,000
Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 1/1/1956
Beginning Time: Unknown
Ending Date: 12/31/1983
Ending Time: Unknown
Currentness Reference: source dates
Status:
Progress: Complete
Maintenance and Update Frequency: None planned
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -70.734
East Bounding Coordinate: -66.81008
North Bounding Coordinate: 45.2109
South Bounding Coordinate: 42.99687
Keywords:
Theme:
Theme Keyword Thesaurus: Maine GIS Thesaurus-Theme
Theme Keyword: bathymetry
Theme Keyword: water depth
Theme Keyword: coastal waters
Theme Keyword: depth
Theme:
Theme Keyword Thesaurus: ISO Keyword Thesaurus
Theme Keyword: oceans
Theme Keyword: elevation
Place:
Place Keyword Thesaurus: Maine GIS Thesaurus-Place
Place Keyword: Maine
Place Keyword: Gulf of Maine
Place Keyword: United States
Stratum:
Stratum Keyword Thesaurus: GCMD Parameter Keyword
Stratum Keyword: oceans
Access Constraints: none
Use Constraints:
Not intended for use in navigation. Users must assume responsibility in determining the usability of this data for their purposes. Digital maps retain the accuracy of their source materials. The best use of data mapped at scales of 1:500,000 and 1:250,000 is in statewide planning and studies; at 1:100,000 in regional planning and studies; at 1:62,500 and 1:24,000 in detailed studies and local planning; and at 1:12,000 and 1:5,000 or larger scales in parcel level studies and detailed local planning.
Point of Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: (MEDOCMGS) Maine Department of Conservation, Maine Geological Survey
Contact Person: Director, Earth Resource Information
Contact Address:
Address Type: mailing address
Address: 22 State House Station
City: Augusta
State or Province: ME
Postal Code: 04333-0022
Country: USA
Contact Voice Telephone: 207 287 2801
Data Set Credit: Credit should always be given to the data source and/or originator when the data is transferred or printed.
Native Data Set Environment:
Maine Office of Information Technology (OIT) Oracle 9i, Maine Office of Geographic Information Systems (MEGIS), Maine GIS SDE, SDEUSER, SDE.DEFAULT, Maine GIS Internet Data Catalog http://megis.maine.gov/catalog/
Data Quality Information
Section Index
Attribute Accuracy:
Attribute Accuracy Report: Line coding was spot checked only, by symbolized display of digital file with source materials. Please report errors to Maine Office of Geographic Information Systems.
Completeness Report: Data set is complete.
Positional Accuracy:
Horizontal Positional Accuracy:
Horizontal Positional Accuracy Report: Approximate horizontal positional accuracy is 51 meters, assuming source data meets National Map Accuracy Standards.
Quantitative Horizontal Positional Accuracy Assessment:
Horizontal Positional Accuracy Value: 51
Horizontal Positional Accuracy Explanation: Compilation base data meets National Map Accuracy Standards for 1:100,000 scale.
Vertical Positional Accuracy:
Vertical Positional Accuracy Report:
National Map Accuracy Standard applies to USGS topographic maps. At all map scales, the maximum allowable vertical tolerance is one half the published contour interval or 5 meters -mean low lower water datum.
Lineage:
Source Information:
Source Citation:
Citation Information:
Originator: U.S. Geological Survey (USGS), U.S. Department of Commerce (USDOC), National Oceanic and Atmospheric Administration (NOAA) National Ocean Service (NOS)
Publication Date: 19850101
Publication Time: Unknown
Title: (100kbath) 1:100,000 scale metric topographic-bathymetric maps
Edition: 43070-A1-TB-100
Geospatial Data Presentation Form: map
Series Information:
Series Name: USGS Topographic-Bathymetric Maps
Issue Identification: 1:100000 scale Topographic-Bathymetric
Publication Information:
Publication Place: Reston VA
Publisher: U.S. Geological Survey and National Ocean Service
Other Citation Details:
On topographic-bathymetric maps, contour lines show elevations of the land areas above sea level, and isobaths (bathymetric contours) show the form of the land below the water surface. Because coastal zones include both land and water, maps of such areas include both topographic and bathymetric data. In order to produce these coastal maps, the National Ocean Service provided bathymetric data to be added to USGS topographic maps. The combined map serves the needs of oceanographers, marine geologists, land use planners, physical scientists, conservationists, and others having an interest in management of the coastal zone, the wetlands, and the offshore environment.
Online Linkage: http://mapping.usgs.gov/mac/isb/pubs/booklets/usgsmaps/usgsmaps.html
Source Scale Denominator: 100000
Type of Source Media: paper
Source Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 1/1/1956
Beginning Time: Unknown
Ending Date: 12/31/1983
Ending Time: Unknown
Source Currentness Reference: publication date
Source Citation Abbreviation: 100kbath
Source Contribution: Bathym100 was developed from USGS 30 x 60 minute series topographic-bathymetric maps.
Process Step:
Process Description: Data digitized by Maine Geological Survey from USGS 30 X 60 minute series topographic-bathymetric maps was quality and spot checked for line coding accuracy. Depression marks were removed.
Source Used Citation Abbreviation: 100kbath
Process Date: 19991031
Process Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: (MEGIS) Maine Office of Geographic Information Systems
Contact Person: GIS Coordinator
Contact Position: GIS Coordinator
Contact Address:
Address Type: mailing address
Address: State House Station 174
City: Augusta
State or Province: ME
Postal Code: 04333-0174
Country: USA
Contact Voice Telephone: 207 624-7700
Contact Facsimile Telephone: 207 287-3842
Hours of Service: Monday through Friday 0800 - 1700 EST
Process Step:
Process Description:
The Maine Office of GIS completed the conversion of all final data layers from NAD27 to NAD83 in July 1999. All the data layers were converted using the ArcInfo (version 7.2.1) NADCON conversion by using the "project" command. All data was copied to double precision, projected to NAD83, and then copied back to single precision. It was decided to keep the NAD27 quad structure instead of generating new quad boundaries from NAD83 coordinates - all indexes (quads) were projected to NAD83 by using the same process previously described. All MEGIS data libraries in ArcInfo Librarian were repopulated using the NAD83 indexes and data.
Process Date: 19990701
Process Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: (MEGIS) Maine Office of Geographic Information Systems
Contact Person: GIS Coordinator
Contact Position: GIS Coordinator
Contact Address:
Address Type: mailing address
Address: State House Station 174
City: Augusta
State or Province: ME
Postal Code: 04333-0174
Country: USA
Contact Voice Telephone: 207 624-7700
Contact Facsimile Telephone: 207 287-3842
Hours of Service: Monday through Friday 0800 - 1700 EST
Cloud Cover: 0
Spatial Data Organization Information
Section Index
Direct Spatial Reference Method: Vector
Point and Vector Object Information:
SDTS Terms Description:
SDTS Point and Vector Object Type: Area chain
Point and Vector Object Count: 24813
Spatial Reference Information
Section Index
Horizontal Coordinate System Definition:
Planar:
Grid Coordinate System:
Grid Coordinate System Name: Universal Transverse Mercator 1983
Universal Transverse Mercator:
UTM Zone Number: 19
Transverse Mercator:
Scale Factor at Central Meridian: 0.9996
Longitude of Central Meridian: -69
Latitude of Projection Origin: 0
False Easting: 500000
False Northing: 0
Planar Coordinate Information:
Planar Coordinate Encoding Method: Coordinate Pair
Coordinate Representation:
Abscissa Resolution: 1
Ordinate Resolution: 1
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
Vertical Coordinate System Definition:
Altitude System Definition:
Altitude Datum Name: National Geodetic Vertical Datum of 1929
Depth System Definition:
Depth Datum Name: Mean lower low water
Depth Resolution: Elevations shown to the nearest meter. Bathymetric contour interval 10 meters with supplementary contours-mean lower low water datum. Relationship between the two datums is variable.
Depth Distance Units: meters
Depth Encoding Method: Attribute values
Entity and Attribute Information
Section Index
Detailed Description:
Entity Type:
Entity Type Label: BATHYM100
Entity Type Definition: arc feature class
Entity Type Definition Source: Environmental Systems Research Institute, Inc. (ESRI)
Attribute:
Attribute Label: DEPTH
Attribute Definition: bathymetric contour depth 10 meter contours-mean lower low water datum
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 10
Range Domain Maximum: 130
Attribute Units of Measure: meters
Attribute:
Attribute Label: TAG
Attribute Definition: item used to select a single feature for labeling purposes
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: y
Enumerated Domain Value Definition: yes, use point for labeling
Enumerated Domain Value: n
Enumerated Domain Value Definition: Do not use point for labeling.
Overview Description:
Entity and Attribute Overview: BATHYM100 is coded with the item DEPTH for bathymetric contour depth at 10 meter intervals.
Entity and Attribute Detail Citation:
The ArcView shapefile and ArcGIS geodatabase formats, commonly used for Maine GIS data, carry default identifiers and attributes that are software generated and/or important for internal recordkeeping. These are listed here to avoid repetition for every layer, and may not be repeated in the attribute descriptions and definitions of each layer. Common software generated identifiers and attributes in Maine GIS data include: FID (feature identifier), Shape (feature geometry), OBJECTID and SHAPE_lengt. In addition, most GIS formats will carry fields for PERIMETER, AREA and/or LENGTH according to feature geometry. These fields are typically available by default, with the units based on coordinate system or projection units of GIS data. Most GIS software packages also provide a means to calculate these values. It is important to test any columns containing PERIMETER, AREA or LENGTH values before using them for analysis purposes. These important values can be carried from format to format and become out-dated. Verify that the values are correct. Also, in your GIS software, please view the properties of data layers for the map units used to calculate these fields, and for the units set for display purposes.
Distribution Information
Section Index
Distributor:
Contact Information:
Contact Organization Primary:
Contact Organization: (MEGIS) Maine Office of Geographic Information Systems
Contact Person: GIS Coordinator
Contact Position: GIS Coordinator
Contact Address:
Address Type: mailing address
Address: State House Station 174
City: Augusta
State or Province: ME
Postal Code: 04333-0174
Country: USA
Contact Voice Telephone: 207 624-7700
Contact Facsimile Telephone: 207 287-3842
Hours of Service: Monday through Friday 0800 - 1700 EST
Resource Description: http://megis.maine.gov/catalog/
Distribution Liability:
Users must assume responsibility to determine the usability of this data for their purposes. Although these data have been processed successfully on a computer system at the Maine Office of Geographic Information Systems, no warranty expressed or implied is made by MEGIS regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. Neither the Maine Office of Geographic Information Systems, nor any of its contributors, is liable for misuse of the data, for damage, for transmission of viruses, or for computer contamination through the distribution of these data sets.
Standard Order Process:
Digital Form:
Digital Transfer Information:
Format Name: ESRI Shapefile
Format Version Number: ARC Version 9.x
Format Specification: ArcView Shapefile Format
Format Information Content:
MEGIS has made all vector layers, in the Maine GIS Internet Data Catalog, available in ESRI's ArcView shapefile format. A shapefile is a simple non-topological format that stores the geometry and attribute information for a set of geographic features as a set of vector (point, line, polygon) coordinates. Shapefiles draw quickly and directly in ArcView, ArcGIS, ArcExplorer. Shapefiles are a compatible data type for many other types of GIS software. Three files are fundamental to each shapefile: .shp stores the feature geometry (shape and location information); .shx stores the index of the feature geometry; .dbf a dBASE (TM) file stores the attribute information for the features. Other index files may be created to help speed analysis and query: these file formats are .sbn .sbx .ain .aix .fbn and .fbx. In addition you may find projection .prj, and metadata .xml, files associated with shapefiles.
File Decompression Technique:
Data available from this website is in .zip compressed format. WinZip is a Windows based, PKZip-compatible compression utility. You will need a program like this to extract the data. A link to a trial copy WinZip software is available at http://megis.maine.gov/links/.
Digital Transfer Option:
Online Option:
Computer Contact Information:
Access Instructions:
These data are available to Internet browsers for download from the Maine GIS Internet Data Catalog - http://megis.maine.gov/catalog/
Data available from this website is in .zip compressed format. WinZip is a Windows based, PKZip-compatible compression utility. You will need a program like this to extract the data. A link to a trial copy WinZip software is available at http://megis.maine.gov/links/
If you are not already a GIS user, free software for viewing these files is available from Environmental Systems Research Institute, Inc. (ESRI) - www.esri.com
See http://megis.maine.gov/links/ for a link to ArcExplorer 9.x .
Fees: Data may be downloaded from Maine GIS Internet Data Catalog at no charge.
Turnaround: Data is available for immediate download from the Maine GIS Internet Data Catalog.
Technical Prerequisites:
If you are not already a GIS user, free software for viewing these files is available from Environmental Systems Research Institute, Inc. (ESRI) http://www.esri.com/
You may also see http://megis.maine.gov/links/ for a link to ArcExplorer 9.x
Available Time Period:
Time Period Information:
Range of Dates/Times:
Beginning Date: 11/30/2000
Ending Date: Present
Distribution Information
Section Index
Distributor:
Contact Information:
Contact Organization Primary:
Contact Organization: Maine Office of Geographic Information Systems
Contact Position: GIS Coordinator
Contact Address:
Address Type: mailing address
Address: State House Station 174
City: Augusta
State or Province: ME
Postal Code: 04333-0174
Country: USA
Contact Voice Telephone: (207) 624-7700
Contact Facsimile Telephone: (207) 287-3842
Hours of Service: Monday through Friday 0800 - 1700 EST
Distribution Liability: Users must assume responsibility to determine the usability of this data for their purposes.
Standard Order Process:
Digital Form:
Digital Transfer Information:
Format Name: ARCSDE
Format Version Number: ArcSDE 9.x
Format Information Content: Oracle 9i
Digital Transfer Option:
Online Option:
Access Instructions: Please contact the Maine Office of GIS (MEGIS) for access instructions.
Fees: Access is available through Maine's wide area network; WAN users may contact the Maine Office of Information Technology, Maine Office of Geographic Information Systems (MEGIS) for a login.
Metadata Reference Information
Section Index
Metadata Date: 7/1/2000
Metadata Review Date: 1/13/2010
Metadata Future Review Date:
Metadata Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: (MEGIS) Maine Office of Geographic Information Systems
Contact Person: GIS Coordinator
Contact Position: GIS Coordinator
Contact Address:
Address Type: mailing address
Address: State House Station 174
City: Augusta
State or Province: ME
Postal Code: 04333-0174
Country: USA
Contact Voice Telephone: 207 624-7700
Contact Facsimile Telephone: 207 287-3842
Hours of Service: Monday through Friday 0800 - 1700 EST
Metadata Standard Name:
FGDC Content Standards for Digital Geospatial Metadata
Metadata
Metadata Standard Version: FGDC-STD-001-1998
Metadata Access Constraints: none
Metadata Use Constraints: none
SMMS Metadata report generated Wednesday, 20/January/2010