lakedpth
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: MEDEP, MEIFW
Publication Date: 2004
Title: lakedpth
Geospatial Data Presentation Form: vector digital data
Publication Information:
Publication Place: Augusta ME
Publisher: Maine Office of Geographic Information Systems (MEGIS)
Online Linkage: Server=bisprodv208.dafs.state.me.us; Service=esri_sde; User=megis; Version=SDE.DEFAULT
Description:
Abstract:
LakeDpth consolidates several sources of lake depth sample information. Each point indicates the depth of the lake at that location, along with the surface elevation of the lake. The data can be used to map the lake beds or compute lake volumes.
The data sources used in this layer differ in their accuracy and are coded so the user can relate a certain level of confidence to each point. Data sources include points digitized off Dept. of Inland Fisheries and Wildlife lake depth maps and elevations determined by combination GPS/depthfinder equipment.
Some lakes will have points from multiple sources. Users should consult the feature-level metadata fields to determine which points are appropriate for their work and select them out using a definition query.
Purpose: To provide data for computation of lake volume and to model lake beds in 3-D. Such data are widely used in managing fish and water quality.
Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 2004
Ending Date: 2008
Currentness Reference: publication date
Status:
Progress: Complete
Maintenance and Update Frequency: as needed
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -71.120771
East Bounding Coordinate: -67.312011
North Bounding Coordinate: 47.272773
South Bounding Coordinate: 43.489943
Keywords:
Theme:
Theme Keyword Thesaurus: Maine GIS Thesaurus-Theme
Theme Keyword: aquatic habitat
Theme Keyword: depth
Theme Keyword: discharge/flow
Theme Keyword: ground water
Theme Keyword: water depth
Theme Keyword: ponds
Theme Keyword: lakes
Theme Keyword: hydrography
Theme Keyword: lacustrine
Theme Keyword: water quality
Theme Keyword: water quality classification
Theme:
Theme Keyword Thesaurus: ISO Keyword Thesaurus
Theme Keyword: elevation
Theme Keyword: inlandWaters
Theme Keyword: imageryBaseMapsEarthCover
Theme:
Theme Keyword Thesaurus: Library of Congress Authorities-Theme
Theme Keyword: elevations
Theme Keyword: inland waters
Theme Keyword: lakes
Theme Keyword: ponds
Access Constraints: None.
Use Constraints: Users must beware of the varying data quality in these points and consult the feature-level metadata fields.
Point of Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: (MEDEP) Maine Department of Environmental Protection
Contact Position: Senior Database Analyst
Contact Address:
Address Type: mailing address
Address: SHS 17
City: Augusta
State or Province: ME
Postal Code: 04333
Country: USA
Contact Voice Telephone: (207)287-4292
Contact Facsimile Telephone: (207)287-7896
Native Data Set Environment: Microsoft Windows 2000 Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 8.3.0.800
Data Quality Information
Section Index
Attribute Accuracy:
Attribute Accuracy Report: FM fields will indicate the quality of any particular measurement.
Positional Accuracy:
Horizontal Positional Accuracy:
Horizontal Positional Accuracy Report: Positional accuracy varies widely from < 1m error for GPSd points to probably 20m or more for points digitized from old IF&W maps.
Lineage:
Process Step:
Process Description:
Some points were digitized from IF&W historic maps into GIS data.
Some points were collected with older differentially-corrected GPS equipment and hand-held depthfinder equipment.
Some points were collected with specially configured GPS/depthfinder combination equipment.
All data were converted into GIS data in ArcGIS 9.0 and imported into SDE.
Process Date: 2004
Process Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: (MEDEP) Maine Department of Environmental Protection
Contact Position: Senior Database Analyst
Contact Address:
Address Type: mailing address
Address: SHS 17
City: Augusta
State or Province: ME
Postal Code: 04333
Country: USA
Contact Voice Telephone: (207)287-4292
Contact Facsimile Telephone: (207)287-7896
Process Step:
Process Description:
University of Maine Farmington - Quebec Labrador Foundation GIS student interns scanned and geo-referenced Maine Inland Fisheries and Wildlife Lake Depth maps using the most up-to-date aerial photos. Shapefiles were created from the digitized lake points and were periodically submitted to Department of Environmental Protection (DEP). DEP staff compiled the shapefiles and added additional lake points into a personal geodatabase in April 2008. Fields were added to match the existing MEGIS Lake Depths feature class. These fields were populated with the appropriate feature level metadata.
Process Date: 2008
Process Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: (MEDEP) Maine Department of Environmental Protection
Contact Position: Senior Database Analyst
Contact Address:
Address Type: mailing address
Address: SHS 17
City: Augusta
State or Province: ME
Postal Code: 04333
Country: USA
Contact Voice Telephone: (207)287-4292
Contact Facsimile Telephone: (207)287-7896
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: Entity point
Point and Vector Object Count: 14354
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: 0.000279
Ordinate Resolution: 0.000279
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
Vertical Coordinate System Definition:
Altitude System Definition:
Altitude Resolution: 1.000000
Altitude Encoding Method: Explicit elevation coordinate included with horizontal coordinates
Entity and Attribute Information
Section Index
Detailed Description:
Entity Type:
Entity Type Label: LakeDpth
Entity Type Definition: Lake depth points
Entity Type Definition Source: Maine Dept of Environmental Protection
Attribute:
Attribute Label: DEPTHF
Attribute Definition: The depth of the point in feet
Attribute Definition Source: MEDEP
Attribute:
Attribute Label: DEPTHM
Attribute Definition: The depth of the point in meters
Attribute Definition Source: MEDEP
Attribute:
Attribute Label: FMNOTE
Attribute Definition: Item contains free text notes on updates to the location of a feature; can be used as cross reference to Other Citation Details in the Source Information section of FGDC metadata.
Attribute Definition Source:
Maine GIS Technical Group, Feature Metadata subcommittee (More information on FM items, codes, definitions, and the use of feature metadata is available at http://megis.maine.gov/standards/flmeta/fmbrief.htm, Maine GIS Standards & Guidelines link.
Attribute:
Attribute Label: FMPROCSS
Attribute Definition:
Item refers to a PROCESS OR ACTION which is explanatory of quality or accuracy of a feature; can be used for cross reference in the Process Description or Source Produced Citation Abbreviation elements, part of the Data Quality/Process Step and Source Information sections of FGDC metadata.
Attribute Definition Source:
Maine GIS Technical Group, Feature Metadata subcommittee (More information on FM items, codes, definitions, and the use of feature metadata is available at http://megis.maine.gov/standards/flmeta/fmbrief.htm, Maine GIS Standards & Guidelines link.
Attribute:
Attribute Label: FMSRC
Attribute Definition:
Item names a SOURCE (general or specific) used for the location of a feature; standardized codes for this item can be used for cross reference in the Source Citation Abbreviation element, part of the Data Quality/Source Information section of FGDC metadata.
Attribute Definition Source:
Maine GIS Technical Group, Feature Metadata subcommittee (More information on FM items, codes, definitions, and the use of feature metadata is available at http://megis.maine.gov/standards/flmeta/fmbrief.htm, Maine GIS Standards & Guidelines link.
Attribute:
Attribute Label: FMSRCORG
Attribute Definition:
Item FMSRCORG refers to the ORIGINATOR OF THE SOURCE used in the location of a feature; codes for this item are standardized acronyms (ME prefix for Maine state agencies, US prefix for USA federal agencies, all lower-case, no hyphens, no punctuation, confirmed), cross references can be made between this item and the element Originator, part of the Data Quality/Source Information section of FGDC metadata.
Attribute Definition Source:
Maine GIS Technical Group, Feature Metadata subcommittee (More information on FM items, codes, definitions, and the use of feature metadata is available at http://megis.maine.gov/standards/flmeta/fmbrief.htm, Maine GIS Standards & Guideline link
Attribute:
Attribute Label: FMUPDDAT
Attribute Definition: Item FMUPDAT refers to the date of update on the location of a feature; can be used as cross reference to Process Date, part of the Data Quality/Process Step sections of FGDC metadata
Attribute Definition Source:
Maine GIS Technical Group, Feature Metadata subcommittee (More information on FM items, codes, definitions, and the use of feature metadata is available at http://megis.maine.gov/standards/flmeta/fmbrief.htm, Maine GIS Standards & Guidelines link.
Attribute:
Attribute Label: FMUPDORG
Attribute Definition:
Item FMUPDORG refers to the EDIT ORGANIZATION responsible for the location of a feature; codes for this are standardized acronyms (ME prefix for Maine state agencies, US prefix for USA federal agencies, all lower-case, no hyphens, no punctuation, confirmed), cross references can be made between this item and the element Process Contact, part of the Data Quality/Process Step sections of FGDC metadata.
Attribute Definition Source:
Maine GIS Technical Group, Feature Metadata subcommittee (More information on FM items, codes, definitions, and the use of feature metadata is available at http://megis.maine.gov/standards/flmeta/fmbrief.htm, Maine GIS Standards & Guidelines link.
Attribute:
Attribute Label: MIDAS
Attribute Definition: Unique identification number assigned to Maine lakes and ponds monitored and managed by Maine state agencies
Attribute Definition Source: Maine Department of Environmental Protection (MEDEP), Maine Inland Fisheries & Wildlife (MDIF&W)
Attribute:
Attribute Label: OBJECTID
Attribute Definition: Internal feature number.
Attribute Definition Source: ESRI
Attribute Domain Values:
Unrepresentable Domain: Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute Label: SHAPE
Attribute Definition: Feature geometry.
Attribute Definition Source: ESRI
Attribute Domain Values:
Unrepresentable Domain: Coordinates defining the features.
Attribute:
Attribute Label: SURFELVF
Attribute Definition: The surface elevation of the lake in feet
Attribute Definition Source: MEDEP
Attribute:
Attribute Label: SURFELVM
Attribute Definition: The surface elevation of the lake in meters
Attribute Definition Source: MEDEP
Attribute:
Attribute Label: SURFMNOTE
Attribute Definition: FM note for the surface elevation or offset
Attribute Definition Source: MEDEP
Attribute:
Attribute Label: SURFMPROCSS
Attribute Definition: FM process for the surface elevation or offset
Attribute Definition Source: MEDEP
Attribute:
Attribute Label: SURFMSRC
Attribute Definition: FM source for the surface elevation or offset
Attribute Definition Source: MEDEP
Attribute:
Attribute Label: SURFMSRCORG
Attribute Definition: FM source organization for the surface elevation or offset
Attribute Definition Source: MEDEP
Attribute:
Attribute Label: SURFMUPDDAT
Attribute Definition: FM update date for surface elevation or offset
Attribute Definition Source: MEDEP
Attribute:
Attribute Label: SURFMUPDORG
Attribute Definition: FM update organization for the surface elevation or offset
Attribute Definition Source: MEDEP
Attribute:
Attribute Label: SURFOFFF
Attribute Definition: The offset of surface elevation of the lake in feet - use this when you don't know the surface elevation, but can tell it is x feet above or below mean lake level.
Attribute Definition Source: MEDEP
Attribute:
Attribute Label: SURFOFFM
Attribute Definition: The offset of surface elevation of the lake in meters - use this when you don't know the surface elevation, but can tell it is x meters above or below mean lake level.
Attribute Definition Source: MEDEP
Attribute:
Attribute Label: ZFMNOTE
Attribute Definition: FM note for the depth measurement
Attribute Definition Source: MEDEP
Attribute:
Attribute Label: ZFMPROCSS
Attribute Definition: FM process for depth measurement
Attribute Definition Source: MEDEP
Attribute:
Attribute Label: ZFMSRC
Attribute Definition: FM source for the depth measurement.
Attribute Definition Source: MEDEP
Attribute:
Attribute Label: ZFMSRCORG
Attribute Definition: FM source organization for the depth measurement.
Attribute Definition Source: MEDEP
Attribute:
Attribute Label: ZFMUPDORG
Attribute Definition: FM update organization for the depth measurement
Attribute Definition Source: MEDEP
Overview Description:
Entity and Attribute Overview:
There are 3 measurements recorded in these data:
location - the xy coordinate of the point
z - the depth of the sample at the point
surface - either the surface elevation of the point, or an offset from mean water level
The depth can be measured in either meters or feet, but when entered, both units should be calculated. Depth is always a positive measurement from the lake surface.
Surface measurements should be EITHER the actual surface elevation (as measured from USGS map, or known lake levels at dam or measuring station, or by surveying) OR an offset measurement from mean lake level (as measured from water lines on rocks, etc.). There should NOT be any points which have both an elevation and an offset - if the mean lake elevation is known and an offset is measured, than the current lake elevation should be recorded.
FM items exist for the location, z value, and surface measurement.
Distribution Information
Section Index
Distributor:
Contact Information:
Contact Organization Primary:
Contact Organization: (MEGIS) Maine Office of Geographic Information Systems
Contact Position: GIS Coordinator
Contact Address:
Address Type: mailing address
Address: State House Station 145
City: Augusta
State or Province: ME
Postal Code: 04333-0145
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: Downloadable Data
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: 4/11/2005
Metadata Review Date:
Metadata Future Review Date:
Metadata Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: (MEDEP) Maine Department of Environmental Protection
Contact Position: Senior Database Analyst
Contact Address:
Address Type: mailing address
Address: SHS 17
City: Augusta
State or Province: ME
Postal Code: 04333
Country: USA
Contact Voice Telephone: (207)287-4292
Contact Facsimile Telephone: (207)287-7896
Metadata Standard Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998
Metadata Time Convention: local time
SMMS Metadata report generated Thursday, 31/July/2008