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wetchar

FGDC XML
Attribute Accuracy Report Stratified random sampling was undertaken on a subset of wetlands to determine the accuracy of the characterization.
Logical Consistency Report Spatial topology meets "Data Standards for Maine Geographic Information Systems", June 2002.
Completeness Report This data set includes only the polygons originally included in the National Wetlands Inventory dataset within Maine's towns. Open water (lakes, rivers, ponds) was removed prior to processing unless identified as a PUB in the NWI dataset. NWI polygons were then dissolved on the system attribute of the NWI classification (P,L,E,R,M).
Horizontal Positional Accuracy Report Approximate horizontal accuracy is 12 meters, assuming source data meets National Map Accuracy Standards.
Horizontal Positional Accuracy Value 12
Horizontal Positional Accuracy Explanation Source data meets National Map Accuracy Standards for 1:24,000 scale.
Vertical Positional Accuracy Report The minimum vertical accuracy of this dataset is that of the 30 meter DEM source, which is a USGS level 1 DEM with a RMS less than 7 meters or an RMS less than 1/2 the contour interval of the corresponding topographic map.
Source Scale Denominator 24000
Type of Source Media online
Beginning Date 197102
Beginning Time Unknown
Ending Date 199212
Ending Time Unknown
Source Currentness Reference source dates
Source Citation Abbreviation nwi
Source Contribution The development process for WETCHAR began with the digital 1:24000 NWI quadrangles. Quadrangle boundaries were dissolved on NWI attribute. Open water (lakes, rivers, ponds) was removed unless identified as NWI system and class "PUB". The NWI polygons were then dissolved on the system attributes (P)Palustrine, (L)Lacustrine, (E)Estuarine, (R)Riverine, (M)Marine. Queries for WETCHAR were applied to this NWI subset.
Calendar Date 1979
Time of Day Unknown
Source Currentness Reference publication date
Source Citation Abbreviation cowardin
Source Contribution Cowardin wetlands classification used in the National Wetlands Inventory provided the wetland attributes used for the development of WETCHAR and for evaluation of the potential for vegetation variety, emergent vegetation, acidic, and unconsolidated bottom conditions.
Source Scale Denominator 24000
Type of Source Media online
Beginning Date 19790701
Beginning Time Unknown
Ending Date 20010131
Ending Time Unknown
Source Currentness Reference source dates
Source Citation Abbreviation medem30
Source Contribution Wetlands with an average slope equal to or less than 3% were identified from this source for floodflow and sediment retention potential.
Source Scale Denominator 24000
Type of Source Media online
Beginning Date 19480101
Beginning Time Unknown
Ending Date 19991231
Ending Time Unknown
Source Currentness Reference source dates
Source Citation Abbreviation streams
Source Contribution Wetlands within 100 feet of a surface watercourse or waterbody were identified from this source for finfish, plant and animal habitat potential.
Source Scale Denominator 24000
Type of Source Media online
Beginning Date 19480101
Beginning Time Unknown
Ending Date 19901231
Ending Time Unknown
Source Currentness Reference source dates
Source Citation Abbreviation ponds
Source Contribution Wetlands within 100 feet of a surface watercourse or waterbody were identified from this source for finfish, plant and animal habitat potential.
Source Scale Denominator 24000
Type of Source Media online
Beginning Date 19480101
Beginning Time Unknown
Ending Date 19991231
Ending Time Unknown
Source Currentness Reference source dates
Source Citation Abbreviation rivers
Source Contribution Wetlands within 100 feet of a surface watercourse or waterbody were identified from this source for finfish, plant and animal habitat potential.
Source Scale Denominator 24000
Type of Source Media online
Beginning Date 1948
Beginning Time Unknown
Ending Date 1999
Ending Time Unknown
Source Currentness Reference source dates
Source Citation Abbreviation coast
Source Contribution Wetlands within 100 feet of a surface watercourse or waterbody were identified from this source for finfish, plant and animal habitat potential.
Source Scale Denominator 24000
Type of Source Media online
Calendar Date 20090526
Time of Day Unknown
Source Currentness Reference source date
Source Citation Abbreviation schlib
Source Contribution Wetlands within 1/4 mile of a school or library were identified from this source. (These wetlands are seen as likely candidates for use as educational resources, adopt-a-wetland programs, and wetlands that come with a built-in constituency.)
Source Scale Denominator 24000
Type of Source Media online
Beginning Date 20010101
Beginning Time Unknown
Ending Date 20041231
Ending Time Unknown
Source Currentness Reference publication date
Source Citation Abbreviation bcd04
Source Contribution Wetlands within 1/4 mile of habitats of management concern which support rare, threatened and endangered plants and animals, exemplary natural communities, and significant and essential wildlife habitats as identified by the Maine Department of Inland Fisheries and Wildlife and the Maine Natural Areas Program, were identified from this source.
Source Scale Denominator 24000
Beginning Date 1992
Beginning Time Unknown
Ending Date 1997
Ending Time Unknown
Source Citation Abbreviation megrass
Source Contribution Wetlands within 1/2 mile of mapped eelgrass beds or Palustrine wetlands directly connected by a stream of 1/2 mile or less in length to same, were identified from this source.
Source Scale Denominator 24000
Type of Source Media online
Beginning Date 20010101
Beginning Time Unknown
Ending Date 20041231
Ending Time Unknown
Source Currentness Reference source date
Source Citation Abbreviation dwa04
Source Contribution Wetlands within 1/4 mile of habitats of management concern which support rare, threatened and endangered plants and animals, exemplary natural communities, and significant and essential wildlife habitats as identified by the Maine Department of Inland Fisheries and Wildlife and the Maine Natural Areas Program, were identified from this source.
Source Scale Denominator 24000
Type of Source Media online
Beginning Date 20010101
Beginning Time Unknown
Ending Date 20041231
Ending Time Unknown
Source Currentness Reference publication date
Source Citation Abbreviation dwalurc04
Source Contribution Wetlands within 1/4 mile of habitats of management concern which support rare, threatened and endangered plants and animals, exemplary natural communities, and significant and essential wildlife habitats as identified by the Maine Department of Inland Fisheries and Wildlife and the Maine Natural Areas Program, were identified from this source.
Source Scale Denominator 24000
Type of Source Media online
Beginning Date 20010101
Beginning Time Unknown
Ending Date 20041231
Ending Time Unknown
Source Currentness Reference publication date
Source Citation Abbreviation cwwh04
Source Contribution Wetlands within 1/4 mile of habitats of management concern which support rare, threatened and endangered plants and animals, exemplary natural communities, and significant and essential wildlife habitats as identified by the Maine Department of Inland Fisheries and Wildlife and the Maine Natural Areas Program, were identified from this source.
Source Scale Denominator 24000
Type of Source Media online
Beginning Date 20010101
Beginning Time Unknown
Ending Date 20041231
Ending Time Unknown
Source Currentness Reference publication date
Source Citation Abbreviation iwwh04
Source Contribution Wetlands within 1/4 mile of habitats of management concern which support rare, threatened and endangered plants and animals, exemplary natural communities, and significant and essential wildlife habitats as identified by the Maine Department of Inland Fisheries and Wildlife and the Maine Natural Areas Program, were identified from this source.
Calendar Date 20030918
Time of Day Unknown
Source Citation Abbreviation ehplvtrn
Source Contribution Wetlands within 1/4 mile of habitats of management concern which support rare, threatened and endangered plants and animals, exemplary natural communities, and significant and essential wildlife habitats as identified by the Maine Department of Inland Fisheries and Wildlife and the Maine Natural Areas Program, were identified from this source.
Source Scale Denominator 24000
Type of Source Media online
Beginning Date 20010101
Beginning Time Unknown
Ending Date 20041231
Ending Time Unknown
Source Currentness Reference publication date
Source Citation Abbreviation shorebird04
Source Contribution Wetlands within 1/4 mile of habitats of management concern which support rare, threatened and endangered plants and animals, exemplary natural communities, and significant and essential wildlife habitats as identified by the Maine Department of Inland Fisheries and Wildlife and the Maine Natural Areas Program, were identified from this source.
Source Scale Denominator 24000
Type of Source Media online
Beginning Date 20010101
Beginning Time Unknown
Ending Date 20041231
Ending Time Unknown
Source Currentness Reference publication date
Source Citation Abbreviation wbc04
Source Contribution Wetlands within 1/4 mile of habitats of management concern which support rare, threatened and endangered plants and animals, exemplary natural communities, and significant and essential wildlife habitats as identified by the Maine Department of Inland Fisheries and Wildlife and the Maine Natural Areas Program, were identified from this source.
Source Scale Denominator 24000
Calendar Date 20040112
Time of Day Unknown
Source Citation Abbreviation sni
Source Contribution Wetlands within 1/4 mile of habitats of management concern which support rare, threatened and endangered plants and animals, exemplary natural communities, and significant and essential wildlife habitats as identified by the Maine Department of Inland Fisheries and Wildlife and the Maine Natural Areas Program, were identified from this source.
Source Scale Denominator 24000
Type of Source Media online
Beginning Date 20010101
Beginning Time Unknown
Ending Date 20041231
Ending Time Unknown
Source Currentness Reference publication date
Source Citation Abbreviation seabirdlurc04
Source Contribution Wetlands within 1/4 mile of habitats of management concern which support rare, threatened and endangered plants and animals, exemplary natural communities, and significant and essential wildlife habitats as identified by the Maine Department of Inland Fisheries and Wildlife and the Maine Natural Areas Program, were identified from this source.
Source Scale Denominator 24000
Type of Source Media online
Calendar Date 20011231
Time of Day Unknown
Source Currentness Reference publication date
Source Citation Abbreviation menap_eo
Source Contribution Wetlands within 1/4 mile of habitats of management concern which support rare, threatened and endangered plants and animals, exemplary natural communities, and significant and essential wildlife habitats as identified by the Maine department of Inland Fisheries and Wildlife and the Maine Natural Areas Program, were identified from this source.
Source Scale Denominator 24000
Type of Source Media online
Calendar Date 19801001
Time of Day Unknown
Source Currentness Reference source dates
Source Citation Abbreviation shell
Source Contribution Wetlands with 1/2 mile of shellfish habitat or shellfish closure areas or Palustrine wetlands directly connected by a stream of 1/2 mile or less in length to same, were identified from this source.
Source Scale Denominator 24000
Type of Source Media online
Beginning Date 1974
Beginning Time Unknown
Ending Date 1995
Ending Time Unknown
Source Currentness Reference publication date
Source Citation Abbreviation firm
Source Contribution Wetlands contained within a FEMA flood zone were identified from this source for floodflow potential.Issues of note: more than 1/2 of all the NWI wetlands occur in areas of the state without digital FEMA data.
Source Scale Denominator 24000
Type of Source Media online
Calendar Date 200307
Time of Day Unknown
Source Currentness Reference source date
Source Citation Abbreviation boatlnch
Time of Day Unknown
Source Citation Abbreviation eheagle
Source Contribution Wetlands within 1/4 mile of habitats of management concern which support rare, threatened and endangered plants and animals, exemplary natural communities, and significant and essential wildlife habitats as identified by the Maine Department of Inland Fisheries and Wildlife and the Maine Natural Areas Program, were identified from this source.
Process Description The process started with NWI coverage by 1:24,000 quad sheet. The quad boundaries were dissolved on NWI attribute. Open water (lakes, rivers, ponds) was removed unless identified as a PUB in the NWI classification. The NWI polygons were then dissolved on the system attribute of the NWI classification (P, L, E, R, M), and queries were then applied to the resulting coverage.
Process Date 20020701
Contact Organization (MENAP) Maine Natural Areas Program
Contact Position GIS Manager/Landscape Ecologist
Address Type mailing address
Address State House Station 93
City Augusta
State or Province ME
Postal Code 04333
Country USA
Contact Voice Telephone (207) 287-8047
Hours of Service Monday through Friday 0800 - 1700 EST
Process Description This dataset represents a second version where each NWI polygon in the original version was evaluated for its characterization as described above. Plant and animal habitat and hydrography datasets from 2004 were used.
Process Date 200202
Contact Organization (MENAP) Maine Natural Areas Program
Contact Position GIS Manager/Landscape Ecologist
Address Type mailing address
Address State House Station 93
City Augusta
State or Province ME
Postal Code 04333
Country USA
Contact Voice Telephone (207) 287-8047
Hours of Service Monday through Friday 0800 - 1700 EST
Cloud Cover 0
Indirect Spatial Reference sample town Fayette
Direct Spatial Reference Method Vector
SDTS Point and Vector Object Type Area chain
Point and Vector Object Count 148
[smcaptur]  true
Grid Coordinate System Name 
UTM Zone Number 19
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 Encoding Method 
Abscissa Resolution 1
Ordinate Resolution 1
Planar Distance Units meters
Horizontal Datum Name North American Datum of 1983
Ellipsoid Name Geodetic Reference System 80
Semi-major Axis 6378137
Denominator of Flattening Ratio 298.257
Altitude Datum Name National Geodetic Vertical Datum of 1929
Altitude Distance Units feet
Entity Type Label WETCHAR
Entity Type Definition polygon feature class
Entity Type Definition Source Environmental Systems Research Institute, Inc. (ESRI)
Attribute Label ACIDIC
Attribute Definition Y indicates the presence of acidic conditions within the wetland, as identified from the PH modifier codes in the digital dataset NWI. N indicates the absence of acidic conditions.
Attribute Definition Source (COWARDIN)Classification of Wetland and Deepwater Habitats of the United States
Beginning Date of Attribute Values 
Attribute Label BOATLNCH
Attribute Definition Value is Y when the wetland is within one quarter (1/4) mile of a boat launch, as mapped on the MEGIS dataset BOATLNCH, and N when it is not.
Beginning Date of Attribute Values 
Attribute Label COAST_100F
Attribute Definition Value is Y when the wetland is within one hundred (100) feet of the coastline, as mapped on the MEGIS 1:24000 scale COAST dataset, and N when it is not.
Beginning Date of Attribute Values 
Attribute Label CWWH
Attribute Definition Value is Y when wetland is within one quarter (1/4) mile of coastal wading bird and waterfowl habitat, as mapped by MEIF&W, and N when it is not.
Beginning Date of Attribute Values 
Attribute Label DEMSLOPE
Attribute Definition The average slope across a wetland calculated using USGS 30m DEM composite for the State of Maine, MEDEM30.
Beginning Date of Attribute Values 
Attribute Label DWA
Attribute Definition Value is Y when wetland is within one quarter (1/4) mile of deer wintering area, as mapped by MEIF&W, and N when it is not.
Beginning Date of Attribute Values 
Attribute Label EAGLE
Attribute Definition Value is Y when wetland is within one quarter (1/4) mile of eagle nesting site, as mapped by MEIF&W, and N when it is not.
Beginning Date of Attribute Values 
Attribute Label EELGRASS
Attribute Definition Value is Y when the wetland is within one half (1/2) mile of an eelgrass bed, as mapped by MEDMR, and N when it is not.
Beginning Date of Attribute Values 
Attribute Label EM
Attribute Definition Value Y indicates the presence of emergent vegetation within the wetland, as identified in CLASS codes for the digital dataset NWI, and value N indicates the absence of the condition.
Attribute Definition Source (COWARDIN)Classification of Wetland and Deepwater Habitats of the United States
Beginning Date of Attribute Values 
Attribute Label FEMA_DATA
Attribute Definition Value is Y when there is digital FEMA data for the location and N when there is not.
Beginning Date of Attribute Values 
Attribute Label FINFISHHA
Attribute Definition Indicates the type of and existence of finfish habitat. NEAR WATER identifies wetlands within 100 feet of a pond, stream, or lake, NONE identifies wetlands that are not within 100 feet of a pond, stream, or lake, and INDEPENDENT identifies wetlands that qualify for characterization as finfish habitat based on preselected National Wetland Inventory types regardless of proximity to other hydrographic features. Blank indicates a non-wetland polygon.
Enumerated Domain Value NEAR WATER
Enumerated Domain Value Definition within 100 ft of a pond, stream, or lake
Enumerated Domain Value NONE
Enumerated Domain Value Definition not within 100 ft of a pond, stream, or lake
Enumerated Domain Value INDEPENDENT
Enumerated Domain Value Definition matches preselected NWI types found in the finfish query
Enumerated Domain Value blank
Enumerated Domain Value Definition not a wetland polygon
Beginning Date of Attribute Values 
Attribute Label FLOOD_ZONE
Attribute Definition Value is Y when the wetland is within a flood zone as mapped by FEMA FIRM (Q3) data and N when it is not.
Beginning Date of Attribute Values 
Attribute Label IFW_BCD
Attribute Definition Value is Y when wetland is within one quarter (1/4) mile of rare animal location, as mapped by MEIF&W, and N when it is not.
Beginning Date of Attribute Values 
Attribute Label IFW_BCD_PO
Attribute Definition Value is Y when wetland is within one quarter (1/4) mile of rare animal habitat, as mapped by MEIF&W, and N when it is not.
Beginning Date of Attribute Values 
Attribute Label MARINESTRE
Attribute Definition Value Y indicates that the wetland is a Palustrine (P) wetland connected to mapped shellfish habitat, shellfish closure, or mapped eelgrass beds by a stream of one half (1/2) mile or less in length and value N indicates that the condition does not exist.
Beginning Date of Attribute Values 
Attribute Label MNAP_EO
Attribute Definition Value is Y when wetland is within one quarter (1/4) mile of Rare Plant or Rare/Exemplary Community, as mapped by the Maine Natural Areas Program (MENAP), and N when it is not.
Beginning Date of Attribute Values 
Attribute Label PLOVTERN
Attribute Definition Value is Y when wetland is within one quarter (1/4) mile of piping plover or least tern nesting habitat, as mapped by MEIF&W, and N when it is not.
Beginning Date of Attribute Values 
Attribute Label POND_100FT
Attribute Definition Value is Y when the wetland is within one hundred (100) feet of a pond, as mapped on the MEGIS 1:24000 scale PONDS dataset, and N when it is not.
Beginning Date of Attribute Values 
Attribute Label QCULTURE
Attribute Definition 1 indicates that the wetland meets the criteria for the culture query; 0 indicates that it does not.
Beginning Date of Attribute Values 
Attribute Label QFINFISH
Attribute Definition 1 indicates that the wetland meets the criteria for the finfish query; 0 indicates that it does not.
Beginning Date of Attribute Values 
Attribute Label QFLOODFLOW
Attribute Definition 1 indicates that the wetland meets the criteria for the floodflow query; 0 indicates that it does not.
Beginning Date of Attribute Values 
Attribute Label QPLANT_ANI
Attribute Definition 1 indicates that the wetland meets the criteria for the plant and animal habitat query; 0 indicates that it does not.
Beginning Date of Attribute Values 
Attribute Label QSEDIMENT
Attribute Definition 1 indicates that the wetland meets the criteria for the sediment retention query; 0 indicates that it does not.
Beginning Date of Attribute Values 
Attribute Label QSHELLFISH
Attribute Definition 1 indicates that the wetland meets the criteria for the shellfish query; 0 indicates that it does not.
Beginning Date of Attribute Values 
Attribute Label RIVER_100F
Attribute Definition Value is Y when the wetland is within one hundred (100) feet of a river, as mapped on the MEGIS 1:24000 scale RIVERS dataset, and N when it is not.
Beginning Date of Attribute Values 
Attribute Label ROSEATE
Attribute Definition Value is Y when wetland is within one quarter (1/4) mile of roseate tern habitat, as mapped by MEIF&W, and N when it is not.
Beginning Date of Attribute Values 
Attribute Label SCHOOL
Attribute Definition Value is Y when the wetland is within one quarter (1/4) mile of a school or library, as mapped on the MEGIS 1:24000 scale SCHLIB dataset, and N when it is not.
Beginning Date of Attribute Values 
Attribute Label SHELLCLOSU
Attribute Definition Value is Y when the wetland is within one half (1/2) mile of a shellfish closure area, as mapped by MEDMR, and N when it is not.
Beginning Date of Attribute Values 
Attribute Label SHELLHARVE
Attribute Definition Value is Y when the wetland is within one half (1/2) mile of a shellfish harvest area, as mapped by MEDMR, and N when it is not.
Beginning Date of Attribute Values 
Attribute Label SHOREBIRD
Attribute Definition Value is Y when wetland is within one quarter (1/4) mile of important shorebird feeding and roosting habitat, as mapped by MEIF&W, and N when it is not.
Beginning Date of Attribute Values 
Attribute Label SPO_ID
Attribute Definition unique statewide identifier
Attribute Definition Source Maine State Planning Office
Beginning Date of Attribute Values 
Attribute Label STREAM_100
Attribute Definition Value is Y when the wetland is within one hundred (100) feet of a stream, as mapped on the MEGIS 1:24000 scale STREAMS dataset, and N when it is not.
Beginning Date of Attribute Values 
Attribute Label SYSTEM
Attribute Definition The system attribute of the wetland, based on the "first letter" attribute from the digital dataset NWI, (P) palustrine, (E) estuarine, (M) marine, (R) riverine, (L) lacustrine
Attribute Definition Source (COWARDIN)Classification of Wetland and Deepwater Habitats of the United States
Enumerated Domain Value P
Enumerated Domain Value Definition Palustrine
Enumerated Domain Value E
Enumerated Domain Value Definition Estuarine
Enumerated Domain Value M
Enumerated Domain Value Definition Marine
Enumerated Domain Value R
Enumerated Domain Value Definition Riverine
Enumerated Domain Value L
Enumerated Domain Value Definition Lacustrine
Beginning Date of Attribute Values 
Attribute Label TOTAL
Attribute Definition Represents the total number of queries for which the wetland received a 1.
Beginning Date of Attribute Values 
Attribute Label TOWN_NUMB
Attribute Definition To create a unique wetland identifier for wetlands within towns covered by the wetlands characterization project, wetlands were numbered from North to South within each town. A zero indicates a non-wetland polygon. In the statewide WETCHAR dataset. This field would not represent a unique number outside of the town to which it is assigned and is not present in the attributes of the statewide dataset.
Beginning Date of Attribute Values 
Attribute Label UB
Attribute Definition Value Y indicates the presence of unconsolidated bottom within the wetland, as identified in CLASS codes for the digital dataset NWI and value N indicates the absence of the condition.
Attribute Definition Source (COWARDIN)Classification of Wetland and Deepwater Habitats of the United States
Beginning Date of Attribute Values 
Attribute Label VEGVARIETY
Attribute Definition The number of vegetation types within the wetland complex based on attributes for the digital dataset NWI.
Attribute Definition Source (COWARDIN)Classification of Wetland and Deepwater Habitats of the United States
Beginning Date of Attribute Values 
Attribute Label WBC
Attribute Definition Value is Y when wetland is within one quarter (1/4) mile of wading bird colony, as mapped by MEIF&W, and N when it is not.
Beginning Date of Attribute Values 
Attribute Label WWH2
Attribute Definition Value is Y when wetland is within one quarter (1/4) mile of wading bird and waterfowl habitat, as mapped by MEIF&W, and N when it is not.
Beginning Date of Attribute Values 
Attribute Label X_COORD
Attribute Definition The approximate center of the wetland represented in UTM, NAD83, Zone 19, meters.
Beginning Date of Attribute Values 
Attribute Label Y_COORD
Attribute Definition Represents the approximate center of the wetland in UTM, NAD83, Zone 19, meters.
Beginning Date of Attribute Values 
Entity and Attribute Overview WETCHAR contains attributes that represent a series of query results as applied to a subset of National Wetlands Inventory data. The dataset contains NWI polygons (open water removed, dissolved by NWI system) attributed Y or N to indicate proximity of the wetland on the landscape to known plant and animal habitat, flood zones, cultural features, hydrography and coastal features, and to indicate known wetland conditions of slope, emergent vegetation, acidity, and unconsolidated bottom. The items QFLOODFLOW, QSEDIMENT, QPLANT_ANI, QFINFISH, QSHELLFISH, QCULTURE represent queries and are coded with 1 to indicate that the wetland meets the criteria for the specific function and with 0 to indicate that it does not. The item TOTAL represents the total number of queries for which the wetland received a 1.
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.
Entity and Attribute Overview WETCHAR contains attributes that represent a series of query results as applied to a subset of National Wetlands Inventory data. The dataset contains NWI polygons (open water removed, dissolved by NWI system) attributed Y or N to indicate proximity of the wetland on the landscape to known plant and animal habitat, flood zones, cultural features, hydrography and coastal features, and to indicate known wetland conditions of slope, emergent vegetation, acidity, and unconsolidated bottom. The items QFLOODFLOW, QSEDIMENT, QPLANT_ANI, QFINFISH, QSHELLFISH, QCULTURE represent queries and are coded with 1 to indicate that the wetland meets the criteria for the specific function and with 0 to indicate that it does not. The item TOTAL represents the total number of queries for which the wetland received a 1.
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.
Contact Organization (MEGIS) Maine Office of Geographic Information Systems
Contact Position GIS Coordinator
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
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.
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/.
Network Resource Name http://megis.maine.gov/catalog/
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[accinstr]  These data are available to Internet browsers for download from the Maine GIS Internet Data 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). See http://megis.maine.gov/links/ for a link to ArcExplorer 9.x .
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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.
Contact Organization (MEGIS) Maine Office of Geographic Information Systems
Contact Position GIS Coordinator
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
Distribution Liability Users must assume responsibility to determine the usability of this data for their purposes.
Format Name ARCSDE
Format Version Number ArcSDE 9.x
Format Information Content Oracle 9i
[accinstr]  Please contact the Maine Office of GIS (MEGIS) for access instructions.
[smdistty]  1
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.
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