Intertidal Flats (250-meter grid spacing)

Metadata also available as

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: MA Dept. of Environmental Protection
Publication_Date: 200901
Title: Intertidal Flats (250-meter grid spacing)
Geospatial_Data_Presentation_Form: vector digital data
Other_Citation_Details:
Substantially complete statewide small area in Ayer/Leominster to finish.
In 2009, the Massachusetts Office of Coastal Zone Management (CZM) extracted intertidal flats from the data and changed the name of these data from "MassDEP Wetlands 1:12000 Polygons" to "Intertidal Flats (250-meter grid spacing)." To allow for consistent evaluation and comparison of a variety of datasets with distinct spatial resolutions, accuracies, and other characteristics, the ocean management planning area was partitioned into 250 x 250-meter grid cells, each with a unique ID. These data were converted to the planning area grid by extracting all of the cells in which the data layer occurred.
Online_Linkage: <http://www.mass.gov/mgis/wetdep.htm>
Description:
Abstract:
The DEP Wetlands datalayer comprises two feature types, polygons and arcs (lines). The attribute codes in the polygon layer describe different types of wetland environments and the arc attributes describe line types based on adjacent polygon types or arcs defined as hydrologic connections.
The wetlands are interpreted from 1:12,000 scale, stereo color-infrared photography (CIR) by staff at UMASS Amherst. The interpretation is field checked by Department of Environmental Protection (DEP) Wetlands Conservancy Program (WCP). Completed interpretations are then scanned and converted into rectified polygons and lines using standard photogrametric techniques by a consultant under contract to the WCP. Final quality control is performed by WCP GIS staff. The polygons and arcs are merged into a single layer (in coverage format) and additional attributes are added for the polygon features. The arc features are coded based on the adjacent polygon types, and attributes are added to the annotation subclass wet. An overlay process using the 1:25,000 Hydrography layer codes the PALIS_ID and PWSID attributes.
The coding of the PALIS_ID and PWSID attributes was done using an overlay process and was not subject to the same quality control as the 1:25,000 Hydrography layer. Areas of wetlands in this layer may be shown as open water in the 1:25,000 Hydrography layer and so the coding of the PALIS_ID would not occur. Lines represented in the old 1:5,000 Streams layer are shown in this layer as hydrologic connections. These lines are only defined where they connect the various wetland types. These connections were not delineated within wetland areas, nor does they depict a complete stream network outside of wetland areas.
Because the source scale of the CIR?s is 1:12,000, plotting of open water features at a larger scale when overlaid onto existing 1:5,000 imagery will reveal areas of open water that are not delineated as such. It should be noted that the resulting wetlands shown in this datalayer are for planning purposes only. Wetlands boundary determination for other purposes, such as the Wetlands Protection Act MA Act M.G.L. c. 131 or local by-laws, must use the relevant procedures and criteria.
In 2009, the Massachusetts Office of Coastal Zone Management (CZM) extracted intertidal flats from the data and changed the name of these data from "MassDEP Wetlands 1:12000 Polygons" to "Intertidal Flats (250-meter grid spacing)." To allow for consistent evaluation and comparison of a variety of datasets with distinct spatial resolutions, accuracies, and other characteristics, the Massachusetts ocean management planning area was partitioned into 250 x 250-meter grid cells, each with a unique ID. These data were converted to the planning area grid by extracting all of the cells in which the data layer occurred.
Purpose: Planning and analysis
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 200901
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Unknown
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -70.959107
East_Bounding_Coordinate: -69.967259
North_Bounding_Coordinate: 42.438703
South_Bounding_Coordinate: 41.326486
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: wetlands
Theme_Keyword: swamps
Theme_Keyword: marshes
Theme_Keyword: marsh
Theme_Keyword: bogs
Theme_Keyword: water features
Theme_Keyword: ponds
Theme_Keyword: lakes
Theme_Keyword: hydrography
Theme_Keyword: hydrology
Theme_Keyword: hydrologic
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans, 014
Theme_Keyword: environment, 007
Theme:
Theme_Keyword_Thesaurus:
NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 6.0.0.0.0
Theme_Keyword: Biosphere > Aquatic Ecosystems > Wetlands
Place:
Place_Keyword_Thesaurus: Getty Thesaurus of Geographic Names
Place_Keyword: Massachusetts
Place_Keyword: Gulf Of Maine
Place_Keyword: Massachusetts Bay
Place_Keyword: Cape Cod Bay
Place_Keyword: Nantucket Sound
Place_Keyword: Vineyard Sound
Place_Keyword: Buzzards Bay
Place:
Place_Keyword_Thesaurus: U.S. Board on Geographic Names
Place_Keyword: Massachusetts
Place_Keyword: Gulf of Maine
Place:
Place_Keyword_Thesaurus:
NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 6.0.0.0.0
Place_Keyword: Ocean > Atlantic Ocean > North Atlantic Ocean
Place_Keyword: Ocean > Atlantic Ocean > North Atlantic Ocean > Gulf Of Maine
Place_Keyword:
Continent > North America > United States Of America > Massachusetts
Access_Constraints: None
Use_Constraints: None
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: EOEA - MassGIS
Contact_Person: Michael Trust
Contact_Position: Sr. Database Administrator
Contact_Address:
Address_Type: mailing address
Address: 251 Causeway Street
Address: Suite 500
City: Boston
State_or_Province: MA
Postal_Code: 02114
Country: USA
Contact_Voice_Telephone: (617) 626-1000
Contact_Facsimile_Telephone: (617) 626-1249
Contact_Electronic_Mail_Address: michael.trust@state.ma.us
Hours_of_Service: 9 AM - 5 PM
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.3500

Data_Quality_Information:
Lineage:
Process_Step:
Process_Description:
CZM extracted tidal flats from the data.
To allow for consistent evaluation and comparison of a variety of datasets with distinct spatial resolutions, accuracies, and other characteristics, the Massachusetts ocean management planning area was partitioned into 250 x 250-meter grid cells, each with a unique ID. These data were converted to the planning area grid by extracting all of the cells in which the data layer occurred.
The data were clipped to the Massachusetts ocean management planning area.
Process_Date: 2009
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: The Massachusetts Office of Coastal Zone Management
Contact_Position: CZM Data Manager
Contact_Address:
Address_Type: mailing address
Address: 251 Causeway Street, Suite 800
City: Boston
State_or_Province: MA
Postal_Code: 02114-2138
Country: USA
Contact_Voice_Telephone: 617-626-1200
Contact_Facsimile_Telephone: 617-626-1240
Contact_Electronic_Mail_Address: daniel.sampson@state.ma.us
Hours_of_Service: 0900 hrs to 1600 hrs EST

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 359

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: State Plane Coordinate System 1983
State_Plane_Coordinate_System:
SPCS_Zone_Identifier: 2001
Lambert_Conformal_Conic:
Standard_Parallel: 41.716667
Standard_Parallel: 42.683333
Longitude_of_Central_Meridian: -71.500000
Latitude_of_Projection_Origin: 41.000000
False_Easting: 200000.000000
False_Northing: 750000.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000000
Ordinate_Resolution: 0.000000
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
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:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Intertidal flats
Entity_Type_Definition:
Area representing a special, sensitive, or unique marine and estuarine life and habitat (SSU) resource.
Entity_Type_Definition_Source: Massachusetts Ocean Management Plan
Attribute:
Attribute_Label: FID
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: GRID1KM
Attribute_Definition:
Unique ID of each 1 x 1-kilometer grid cell that occurs within the ocean planning area. Values range from 1 to 6394.
Attribute_Definition_Source: CZM
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 6394
Attribute:
Attribute_Label: GRID250M
Attribute_Definition:
ID of 250 x 250-meter grid cell that falls within each 1 x 1-kilometer grid cell. Sixteen 250 x 250-meter cells fall within each 1 x 1-kilometer grid cell; values range from A to P for each cell.
Attribute_Definition_Source: CZM
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: A
Range_Domain_Maximum: P
Attribute:
Attribute_Label: GRIDID
Attribute_Definition:
Unique ID of each 250 x 250-meter grid cell within the planning area. The values were created by adding GRID1KM and GRID250M; cell values range from 1A to 6394P. Please note that not all combinations have been used due to the grid being clipped to the planning area.
Attribute_Definition_Source: CZM
Attribute_Domain_Values:
Unrepresentable_Domain: Unique identifier.

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: The Massachusetts Office of Coastal Zone Management
Contact_Position: CZM Data Manager
Contact_Address:
Address_Type: mailing address
Address: 251 Causeway Street, Suite 800
City: Boston
State_or_Province: MA
Postal_Code: 02114-2138
Country: USA
Contact_Voice_Telephone: 617-626-1200
Contact_Facsimile_Telephone: (617) 626-1240
Contact_Electronic_Mail_Address: czm@state.ma.us
Hours_of_Service: 0900 hrs to 1600 hrs EST
Contact_Instructions: email only
Resource_Description: CZM_moris_om_intertidal_flats_ids_poly
Distribution_Liability:
Although every effort has been made to ensure the accuracy of these data, errors and conditions originating from physical sources used to develop these data may be reflected in the data supplied. The client must be aware of data conditions and bear responsibility for the appropriate use of the information with respect to possible errors, original map scale, collection methodology, currency of data, and other conditions specific to certain data. In no event shall CZM be liable for any damages, whether general, special, incidental or consequential damages, arising out of your use of these data. Your sole remedy for damages is to stop using the data. You agree to defend, indemnify, and hold harmless CZM and its employees against any claim, loss, liability or expense, including attorneys' fees, resulting from loss of or damage to property or the injury to or death of any person arising out of the use of the data.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ESRI Shapefile (.shp)
Format_Version_Number: ArcGIS 8.x & 9.x
Transfer_Size: 0.052
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://www.mass.gov/czm/mapping/index.htm>
Fees:
GIS and coordinate files may be downloaded at no charge by following links on the Massachusetts Office of Coastal Zone Management website (<http://www.mass.gov/czm/>).

Metadata_Reference_Information:
Metadata_Date: 20100301
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: EOEA - MassGIS
Contact_Person: Michael Trust
Contact_Position: Sr. Database Administrator
Contact_Address:
Address_Type: mailing address
Address: 251 Causeway Street
Address: Suite 500
City: Boston
State_or_Province: MA
Postal_Code: 02114
Country: USA
Contact_Voice_Telephone: (617) 626-1000
Contact_Facsimile_Telephone: (617) 626-1249
Contact_Electronic_Mail_Address: michael.trust@state.ma.us
Hours_of_Service: 9 AM - 5 PM
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: <http://www.mass.gov/mgis/wetdep.htm>
Profile_Name: MassGIS Web Documentation
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile

Generated by mp version 2.9.6 on Mon Mar 01 15:40:06 2010