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Great Bay Estuary Assessment Zones

Great Bay Estuary Assessment Zones

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator:
NH Department of Environmental Services, Watershed Management Bureau, Water Quality Planning Section
Publication_Date: 20160819
Title: Great Bay Estuary Assessment Zones
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage:
<URL:http://www.granit.unh.edu/data/search?dset=greatbayestuaryassessmentzones_current/nh>
Description:
Abstract:
For 305(b)/303(d) water quality assessments, NHDES uses assessment units to cover the Great Bay Estuary that are coincident with the shellfish growing areas established by the NHDES Shellfish Program. Great Bay itself consists of seven different assessment units. Nitrogen and eutrophication parameters are logically evaluated utilizing data from larger aggregates of assessment units covering contiguous areas. Eutrophication effects are less localized than the bacteria pollution sources that affect shellfish harvesting. Therefore, NHDES aggregated the assessment units in the Great Bay Estuary into 27 assessment zones. The assessment zones were developed in cooperation with the PREP Technical Advisory Committee. For the Salmon Falls/Piscataqua River, the assessment zones cover both the New Hampshire and Maine sides of the main stem of the river. The river is well mixed and data from both sides of the state line are needed to provide a comprehensive dataset for assessments. However, the assessment determinations made by NHDES only apply to the New Hampshire side of the river. The Maine Department of Environmental Protection makes its own assessment determinations for the Maine side of the Salmon Falls/Piscataqua River.
Purpose:
Great Bay Estuary assessment zones used to evaluate nitrogen and eutrophication parameters for 305(b)/303(d) assessments purposes. These zones are also used by the Piscataqua Region Estuaries Partnership (PREP) for reporting eelgrass cover in their State of Our Estuaries reports.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20160819
Currentness_Reference: Publication Date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Irregular
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -70.953305
East_Bounding_Coordinate: -70.405369
North_Bounding_Coordinate: 42.8539
South_Bounding_Coordinate: 43.227938
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: eelgrass
Theme_Keyword: zones
Theme_Keyword: assessment
Place:
Place_Keyword_Thesaurus: ISO 19115 Topic Category
Place_Keyword: oceans
Place_Keyword: Northeast
Place_Keyword: New England
Place_Keyword: New Hampshire
Place_Keyword: Great Bay
Access_Constraints: None
Use_Constraints:
This data set is to be used as a primary reference source. This is public information and may be interpreted by organizations, agencies, units of government, or others based on needs; however, they are responsible for the appropriate application. Federal, state, or local regulatory bodies are not to reassign to the New Hampshire Department of Environmental Services any authority for the decisions they make. Photographic or digital enlargement of these maps to scales greater than that at which they were originally delineated can cause misrepresentation of the data. If enlarged, the maps will not include the fine detail that would be appropriate for mapping at the small scale. Digital data files are periodically updated, and users are responsible for obtaining the latest version of the data
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Matt Wood
Contact_Organization: New Hampshire Department of Environmental Services
Contact_Position: Water Quality Specialist
Contact_Address:
Address_Type: Mailing and Physical Address
Address: PO Box 95, 29 Hazen Drive
City: Concord
State_or_Province: New Hampshire
Postal_Code: 03302
Contact_Electronic_Mail_Address: matthew.wood@des.nh.gov
Contact_Voice_Telephone: 603-271-8868

Data_Quality_Information:
Logical_Consistency_Report: None
Completeness_Report: See use constraints.

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 27

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: 2800
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999967
Longitude_of_Central_Meridian: -71.666667
Latitude_of_Projection_Origin: 42.500000
False_Easting: 984250.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000512
Ordinate_Resolution: 0.000512
Planar_Distance_Units: survey feet
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

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: GreatBayEstuaryAssessmentZones_Current
Entity_Type_Definition: Great Bay Estuary Assessment Zones - Current
Entity_Type_Definition_Source: None
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: LABEL
Attribute_Definition: Zone label
Attribute_Definition_Source: NHDES
Attribute_Domain_Values:
Unrepresentable_Domain: Text label
Attribute:
Attribute_Label: SHAPE_LENG
Attribute_Definition: Length
Attribute_Definition_Source: NHDES
Attribute_Domain_Values:
Unrepresentable_Domain: Length
Attribute:
Attribute_Label: SHAPE_AREA
Attribute_Definition: Area of feature in internal units squared.
Attribute_Definition_Source: NHDES
Attribute_Domain_Values:
Unrepresentable_Domain: Area

Metadata_Reference_Information:
Metadata_Date: 20160819
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: New Hampshire Department of Environmental Services
Contact_Person: Matt Wood
Contact_Address:
Address_Type: unknown
Address: PO Box 95, 29 Hazen Drive
City: Concord
State_or_Province: NH
Postal_Code: 03302
Contact_Voice_Telephone: (603) 271-8868
Contact_Electronic_Mail_Address: matthew.wood@des.nh.gov
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time

Generated by mp version 2.8.13 on Fri Aug 19 13:59:44 2016
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