Maine Wetlands Characterization


Identification Information:
Citation:
Citation Information:
Publication Date: 20190306
Title: Maine Wetlands Characterization
Geospatial Data Presentation Form: vector digital data
Online Linkage: https://gis.maine.gov/arcgis/rest/services/inlandWaters/WetlandsCharacterization/MapServer/0
Description:
Abstract: WETCHAR contains National Wetland Inventory polygons for towns in Maine characterized on six different wetland functions and values at a scale of 1:24000. The base layer for the Wetlands Characterization is the National Wetlands Inventory (NWI) data. In the Wetlands Characterization, wetlands are characterized for floodflow alteration, sediment retention, finfish habitat, shellfish habitat, plant and animal habitat, and cultural value. A series of queries is applied to the National Wetlands Inventory coverage. The resultant file is basically the NWI polygons with fields for the presence or absence of the characteristics within each query and fields indicating whether or not the wetland met all the criteria for each query. 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). The queries were then applied to that coverage.
Purpose: WETCHAR contains National Wetland Inventory polygons for towns in Maine characterized on six different wetland functions. The base layer for the Wetlands Characterization is the National Wetlands Inventory (NWI) data.
Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 19480101
Ending Date: 20041231
Currentness Reference: Unknown
Status:
Progress: Complete
Maintenance and Update Frequency: Unknown
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -71.2837
East Bounding Coordinate: -66.7573
North Bounding Coordinate: 47.542
South Bounding Coordinate: 42.9994
Keywords:
Theme:
Theme Keyword Thesaurus: None
Theme Keyword: aquatic habitat
Theme Keyword: coastal processes
Theme Keyword: wetlands
Theme Keyword: water management
Theme Keyword: vegetation
Theme Keyword: ecological dynamics
Theme Keyword: erosion sedimentation
Theme Keyword: environmental impacts
Theme Keyword: estuarine
Theme Keyword: fisheries
Theme Keyword: habitat
Theme Keyword: hydrography
Theme Keyword: marine biology
Theme Keyword: ph
Theme Keyword: shellfish
Theme Keyword: terrestrial habitat
Theme Keyword: ecology
Theme:
Theme Keyword Thesaurus: ISO 19115 Topic Categories
Theme Keyword: biota
Theme Keyword: environment
Theme Keyword: imageryBaseMapsEarthCover
Theme Keyword: inlandWaters
Theme Keyword: oceans
Theme Keyword: planningCadastre
Theme Keyword: society
Place:
Place Keyword Thesaurus: None
Place Keyword: Maine
Stratum:
Stratum Keyword Thesaurus: None
Stratum Keyword: biosphere
Stratum Keyword: hydrosphere
Stratum Keyword: human dimensions
Stratum Keyword: land surface
Access Constraints: None
Use Constraints: 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: Maine GeoLibrary
Contact Position: GIS Coordinator
Contact Address:
Address Type: mailing and physical
Address: 51 Commerce Dr, 3rd floor
City: Augusta
State or Province: ME
Postal Code: 04333
Country: US
Contact Voice Telephone: 207-624-7700
Contact Electronic Mail Address: GeolibraryBoard.OIT@maine.gov
Data Set Credit: Maine GeoLibrary
Data Quality Information:
Attribute Value Accuracy Information:
Quantitative Attribute Accuracy Assessment:
Attribute Accuracy Explanation: : Stratified random sampling was undertaken on a subset of wetlands to determine the accuracy of the characterization.
Positional Accuracy:
Horizontal Positional Accuracy:
Quantitative Horizontal Positional Accuracy Assessment:
Horizontal Positional Accuracy Explanation: Approximate horizontal accuracy is 12 meters, assuming source data meets National Map Accuracy Standards. 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.
Spatial Data Organization Information:
Direct Spatial Reference Method: Vector
Entity and Attribute Information:
Detailed Description:
Entity Type:
Entity Type Label: WETCHAR
Entity Type Definition: polygon feature class
Entity Type Definition Source: Environmental Systems Research Institute, Inc. (ESRI)
Attribute:
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
Attribute:
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.
Attribute Definition Source: data layer
Attribute:
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.
Attribute Definition Source: data layer
Attribute:
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.
Attribute Definition Source: data layer
Attribute:
Attribute Label: DEMSLOPE
Attribute Definition: The average slope across a wetland calculated using USGS 30m DEM composite for the State of Maine, MEDEM30.
Attribute Definition Source: Data layer
Attribute:
Attribute Label: DWA
Attribute Definition: Value is Y when wetland is within one quarter (1/4) mile of deer wintering area, as mapped by MEIFW, and N when it is not.
Attribute Definition Source: data layer
Attribute:
Attribute Label: EAGLE
Attribute Definition: Value is Y when wetland is within one quarter (1/4) mile of eagle nesting site, as mapped by MEIFW, and N when it is not.
Attribute Definition Source: data layer
Attribute:
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.
Attribute Definition Source: data layer
Attribute:
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
Attribute:
Attribute Label: FEMA_DATA
Attribute Definition: Value is Y when there is digital FEMA data for the location and N when there is not.
Attribute Definition Source: data layer
Attribute:
Attribute Label: FINFISHFLAG
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.
Attribute Definition Source: data layer
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: NEAR WATER
Enumerated Domain Value Definition: within 100 ft of a pond, stream, or lake
Enumerated Domain Value Definition Source: data layer
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: NONE
Enumerated Domain Value Definition: not within 100 ft of a pond, stream, or lake
Enumerated Domain Value Definition Source: data layer
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: INDEPENDENT
Enumerated Domain Value Definition: Definition: matches preselected NWI types found in the finfish query
Enumerated Domain Value Definition Source: data layer
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: blank
Enumerated Domain Value Definition: not a wetland polygon
Enumerated Domain Value Definition Source: data layer
Attribute:
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.
Attribute Definition Source: data layer
Attribute:
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.
Attribute Definition Source: data layer
Attribute:
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 MEIFW, and N when it is not.
Attribute Definition Source: data layer
Attribute:
Attribute Label: MARINESTREAM
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.
Attribute Definition Source: data layer
Attribute:
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.
Attribute Definition Source: data layer
Attribute:
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.
Attribute Definition Source: data layer
Attribute:
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.
Attribute Definition Source: data layer
Attribute:
Attribute Label: QCULTURE
Attribute Definition: 1 indicates that the wetland meets the criteria for the culture query; 0 indicates that it does not.
Attribute Definition Source: data layer
Attribute:
Attribute Label: QFINFISH
Attribute Definition: 1 indicates that the wetland meets the criteria for the finfish query; 0 indicates that it does not.
Attribute Definition Source: data layer
Attribute:
Attribute Label: QFLOODFLOW
Attribute Definition: 1 indicates that the wetland meets the criteria for the floodflow query; 0 indicates that it does not.
Attribute Definition Source: data layer
Attribute:
Attribute Label: QPLANT_ANIMAL
Attribute Definition: 1 indicates that the wetland meets the criteria for the plant and animal habitat query; 0 indicates that it does not.
Attribute Definition Source: data layer
Attribute:
Attribute Label: QSEDIMENT
Attribute Definition: 1 indicates that the wetland meets the criteria for the sediment retention query; 0 indicates that it does not.
Attribute Definition Source: data layer
Attribute:
Attribute Label: QSHELLFISH
Attribute Definition: 1 indicates that the wetland meets the criteria for the shellfish query; 0 indicates that it does not.
Attribute Definition Source: data layer
Attribute:
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.
Attribute Definition Source: data layer
Attribute:
Attribute Label: ROSEATE
Attribute Definition: Value is Y when wetland is within one quarter (1/4) mile of roseate tern habitat, as mapped by MEIFW, and N when it is not.
Attribute Definition Source: data layer
Attribute:
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.
Attribute Definition Source: data layer
Attribute:
Attribute Label: SHELLCLOSURE
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.
Attribute Definition Source: data layer
Attribute:
Attribute Label: SHELLHARVEST
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.
Attribute Definition Source: data layer
Attribute:
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 MEIFW, and N when it is not.
Attribute Definition Source: data layer
Attribute:
Attribute Label: SPO_ID
Attribute Definition: unique statewide identifier
Attribute Definition Source: Maine State Planning Office
Attribute:
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.
Attribute Definition Source: data layer
Attribute:
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
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: P
Enumerated Domain Value Definition: Palustrine
Enumerated Domain Value Definition Source: (COWARDIN)Classification of Wetland and Deepwater Habitats of the United States
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: E
Enumerated Domain Value Definition: Estuarine
Enumerated Domain Value Definition Source: (COWARDIN)Classification of Wetland and Deepwater Habitats of the United States
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: M
Enumerated Domain Value Definition: Marine
Enumerated Domain Value Definition Source: (COWARDIN)Classification of Wetland and Deepwater Habitats of the United States
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: R
Enumerated Domain Value Definition: Riverine
Enumerated Domain Value Definition Source: (COWARDIN)Classification of Wetland and Deepwater Habitats of the United States
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: L
Enumerated Domain Value Definition: Lacustrine
Enumerated Domain Value Definition Source: (COWARDIN)Classification of Wetland and Deepwater Habitats of the United States
Attribute:
Attribute Label: TOTAL
Attribute Definition: Represents the total number of queries for which the wetland received a 1.
Attribute Definition Source: data layer
Attribute:
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
Attribute:
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
Attribute:
Attribute Label: WBC
Attribute Definition: Value is Y when wetland is within one quarter (1/4) mile of wading bird colony, as mapped by MEIFW, and N when it is not.
Attribute Definition Source: data layer
Attribute:
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 MEIFW, and N when it is not.
Attribute Definition Source: data layer
Attribute:
Attribute Label: X_COORD
Attribute Definition: The approximate center of the wetland represented in UTM, NAD83, Zone 19, meters.
Attribute Definition Source: data layer
Attribute:
Attribute Label: Y_COORD
Attribute Definition: Represents the approximate center of the wetland in UTM, NAD83, Zone 19, meters.
Attribute Definition Source: data layer
Overview Description:
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.
Metadata Reference Information:
Metadata Date: 20190306
Metadata Contact:
Metadata Standard Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998
Metadata Time Convention: local time