| shorezone_iwwh2008 | |
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Data format: Shapefile File or table name: shorezone_iwwh2008 Coordinate system: Universal Transverse Mercator Theme keywords: environment, biota, inlandWaters, shoreland zoning, National Wetlands Inventory, natural resource protection act, significant wildlife habitat, inland wading bird habitat, inland waterfowl habitat, shoreland zoning |
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Abstract:
SHOREZONE_IWWH contains Inland Waterfowl and Wading Bird Habitat (IWWH) polygons rated as HIGH or MODERATE value with a wetland area of at least 10 acres. Polygons were mapped by MDIFW regional staff and/or via an automated system (hereafter referred to as UMO process) developed by Heather Rustigian and William Krohn (USGS Biological Resources Division) using statewide digital NWI (National Wetlands Inventory) data, aerial imagery, and hydrology data. |
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Metadata elements shown with blue text are defined in the Federal Geographic Data Committee's (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM). Elements shown with green text are defined in the ESRI Profile of the CSDGM. Elements shown with a green asterisk (*) will be automatically updated by ArcCatalog. ArcCatalog adds hints indicating which FGDC elements are mandatory; these are shown with gray text.
SHOREZONE_IWWH contains Inland Waterfowl and Wading Bird Habitat (IWWH) polygons rated as HIGH or MODERATE value with a wetland area of at least 10 acres. Polygons were mapped by MDIFW regional staff and/or via an automated system (hereafter referred to as UMO process) developed by Heather Rustigian and William Krohn (USGS Biological Resources Division) using statewide digital NWI (National Wetlands Inventory) data, aerial imagery, and hydrology data.
Inland wetlands for shoreland zoning by Maine Department of Environmental Protection. These IWWH are all CANDIDATE Significant Wildlife Habitats. Each polygon must be field-verified to determine whether it meets the definition under the Natural Resources Protection Act (NRPA). NOTE - not all Iwwh polygons considered as candidate Significant Wildlife Habitat are contained in this layer; only those with a wetland area of at least 10 acres qualify for shoreland zoning.
Five criteria are used to assess IWWHs: dominant wetland type, wetland type diversity, habitat size, wetland type interspersion, and amount of open water. A high to moderate value inland habitat is an inland wetland complex, and a 250 ft buffer, that through a combination of the five criteria listed above, meets MDIFW guidelines or is an inland wetland complex that has documented outstanding use by waterfowl or wading birds. For further information on this rating system please refer to the following document: "GIS-Based Evaluation of Waterfowl and Wading Bird Habitats in Maine" by Heather L. Rustigian and William B. Krohn, University of Maine, Orono, Final Contract Report to the Maine Dept. Inland Fisheries and Wildlife, Augusta, Maine, June 2002. Not all ratings have been field verified. The reconciliation process between the MDIFW-mapped polygons and the UMO-generated polygons involved several steps or decisions. These are described in the Process Step dated 05/01/2006, in the Data Quality Information section of this metadata.
publication date
These data are provided by the Maine Department of Inland Fisheries and Wildlife for shoreland zone mapping by Maine Department of Environmental Protection. 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. In the use of Maine GIS data, please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the correct copy of both data and metadata from the Maine GIS Data Catalog. The Maine Office of Geographic Information Systems (MEGIS) provides notice of updates and corrections directly to the Maine GIS Technical Group and Maine GIS Users, through the MEGISTECH and MEGISUSER list servers. To subscribe please contact MeGIS through the Maine Office of Information Technology (OIT) Customer Support Center (CSC) at (207) 624-7700. To request data correction in, or provide updates to Maine GIS data, please use the contact information contained in the metadata. Updates, corrections, and feedback, incorporated in the Maine GIS database are made in accordance with "Data Standards for Maine Geographic Information Systems", 2002, and coordinated by MEGIS in consultation with the Maine GIS Executive Council.
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Heather L. Rustigian and William B. Krohn, University of Maine, Maine Cooperative Fish and Wildlife Research Unit; Maine Department of Inland Fisheries and Wildlife (MDIFW), Wildlife Resource Assessment Section, Habitat Group; and MDIFW, Wildlife Management Section, Regional staff.
The dataset is complete.
Approximate horizontal accuracy is 12 meters plus or minus 40 feet or better, assuming source data meets National Map Accuracy Standards.
Data was derived from digital data that meets or exceeds National Map Accuracy Standards for 1:24,000 scale.
For some polygons Criteria Rating Procedure was used in conjunction with the National Wetlands Inventory to determine polygon rating.
For some polygons Criteria Rating Procedure was used in conjunction with orthoimagery to determine polygon rating.
For some polygons Criteria Rating Procedure was used in conjunction with hydrography data to determine polygon rating.
For some polygons Criteria Rating Procedure was used in conjunction with orthoimagery to determine polygon rating.
For some polygons Criteria Rating Procedure was used in conjunction with orthoimagery to determine polygon rating.
For some polygons Criteria Rating Procedure was used in conjunction with orthoimagery to determine polygon rating.
For some polygons Criteria Rating Procedure was used in conjunction with orthoimagery to determine polygon rating.
For some polygons Criteria Rating Procedure was used in conjunction with orthoimagery to determine polygon rating.
For some polygons Criteria Rating Procedure was used in conjunction with orthoimagery to determine polygon rating.
For further information on the rating system used for ShoreZone_Iwwh polygons, please refer to this document.
Five criteria are used to assess IWWHs: dominant wetland type, wetland type diversity, habitat size, wetland type interspersion, and amount of open water. A high to moderate value inland habitat is an inland wetland complex, and a 250 ft upland area, that through a combination of the five criteria listed above, meets MDIFW guidelines or is an inland wetland complex that has documented outstanding use by waterfowl or wading birds. For further information on this rating system please refer to the following document: "GIS-Based Evaluation of Waterfowl and Wading Bird Habitats in Maine" by Heather L. Rustigian and William B. Krohn, University of Maine, Orono, Final Contract Report to the Maine Department of Inland Fisheries and Wildlife, Augusta, Maine, June 2002. Not all ratings have been field verified. The reconciliation process between the MDIFW-mapped polygons and the UMO-generated polygons involved several steps or decisions. In general, MDIFW polygons were given priority over UMO polygons. Therefore, if there was overlap of MDIFW and UMO polygons, the MDIFW polygons were used to clip the UMO polygons and the MDIFW rating and identifier were retained. If an MDIFW polygon captured areas that were not captured by any UMO polygons, then National Wetlands Inventory (NWI) data, aerial imagery, and hydrology data were used to generate a spatially accurate representation of the wetland complex, which was then buffered to 250 ft to create the final IWWH polygon. If the original MDIFW polygon was rated as indeterminate, the 2-Criteria Rating Procedure based on wetland type interspersion and percent open water, was used in conjunction with NWI data, aerial imagery, and hydrology to determine the polygon's rating of low, moderate, or high. The imagery used to delineate and rate polygons included: DOQQ's (3.3-ft resolution) ranging from 1996-1999 for a majority of the state except the northwest; and ortho-rectified digital imagery (0.5-2 ft ground sample distance
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Metadata imported.
Metadata imported.
Metadata imported.
Dataset copied.
Internal feature number.
ESRI
Feature geometry.
ESRI
ID number for Iwwh wetland polygon
MDIFW
Acreage of the wetland area
MDIFW
Area of feature in internal units squared.
ESRI
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