Bathymetry and Elevation Data for Quonochontaug Pond
Metadata also available as
Metadata:
- Identification_Information:
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- Citation:
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- Citation_Information:
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- Originator: MapCoast
- Publication_Date: 20080507
- Title: Bathymetry and Elevation Data for Quonochontaug Pond
- Geospatial_Data_Presentation_Form: raster digital data
- Publication_Information:
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- Publisher: MapCoast
- Online_Linkage: www.mapcoast.org
- Description:
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- Abstract:
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Bathymetry and elevation data points of Quonochontaug Pond and vicinity. The data includes both subtidal and terrestrial elevations
- Purpose:
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Soil survey and resource inventory of shallow water habitats of Rhode Island.
- Time_Period_of_Content:
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- Range_of_Dates/Times:
- Currentness_Reference: ground condition
- Status:
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- Progress: Complete
- Maintenance_and_Update_Frequency: As needed
- Spatial_Domain:
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- Bounding_Coordinates:
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- West_Bounding_Coordinate: -71.701235
- East_Bounding_Coordinate: -71.624541
- North_Bounding_Coordinate: 41.389793
- South_Bounding_Coordinate: 41.341958
- Keywords:
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- Theme:
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- Theme_Keyword_Thesaurus: Fathometer, depth soundingings, LiDAR, RTK
- Theme_Keyword: Bathymetry and Elevation
- Theme:
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- Access_Constraints: None
- Use_Constraints: Not to be used for navigation or re-sold or re-used for profit.
- Point_of_Contact:
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- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: Mike Bradley
- Contact_Organization: MapCoast
- Contact_Address:
- Contact_Voice_Telephone: 401-874-5054
- Contact_Electronic_Mail_Address: mike@edc.uri.edu
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Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.5.1450
- Data_Quality_Information:
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- Logical_Consistency_Report:
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Bathymetry, RTK, LiDAR, and photogrammetric data points where merged into file for interpolation.
- Positional_Accuracy:
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- Horizontal_Positional_Accuracy:
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- Horizontal_Positional_Accuracy_Report: +/- 1m
- Vertical_Positional_Accuracy:
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- Vertical_Positional_Accuracy_Report: LiDAR data = +/- 1inch. Fathometer = +/- 3 inches
- Lineage:
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- Source_Information:
- Process_Step:
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- Process_Description:
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Data from multple sources was used to shapefile. RIDOT, NOAA Lidar, RTK elevations, and bathymetry collected by Joe Klinger were all used to create an ESRI shapefile of the data.
Details on Bathymetry Data:
Joe Klinger collected 54,514 soundings. Depth was measured by a survey-grade (3in) fathometer (in feet) registered to NAVD88. Tide correction was done using Hypack 2.12A Gold software. Tide corrections were based on Hypack analysis of three tide gauges placed in Quonny by NRCS for the survey. Transducer correction is based on the depth of transducer below the hull plus an assumed squat of the boat of one inch. XY locations were obtained with a Trimble DSM212L DGPS receiver with sub-meter accuracy.
Data were provided in RI State Plane feet NAD83 to URI EDC excel spreadsheet. URI-EDC eliminated duplicate and aberrant soundings as well as data points with aberrant XY locations. Excel coordinates were converted to an Arc shapefile with ArcView 3.3 and converted to a coverage with Arc 9.2. Futher field checks also eliminated a handfull of incorrect points. Shallow water depths were also measured with a RTK GPS. All data are included in the raw data file below.
- Source_Used_Citation_Abbreviation: D:\mikeB\mapcoast\nin_data\ningrid.xml
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- SDTS_Terms_Description:
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- SDTS_Point_and_Vector_Object_Type: Entity point
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- Horizontal_Coordinate_System_Definition:
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- Planar:
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- Grid_Coordinate_System:
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- Grid_Coordinate_System_Name: State Plane Coordinate System 1983
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- SPCS_Zone_Identifier: 3800
- Transverse_Mercator:
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- Scale_Factor_at_Central_Meridian: 0.999994
- Longitude_of_Central_Meridian: -71.500000
- Latitude_of_Projection_Origin: 41.083333
- False_Easting: 328083.333333
- False_Northing: 0.000000
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- Abscissa_Resolution: 5.000000
- Ordinate_Resolution: 5.000000
- Planar_Distance_Units: survey feet
- Geodetic_Model:
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- 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:
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- Depth_System_Definition:
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- Depth_Datum_Name: Land survey datum (NAVD88)
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- Detailed_Description:
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- Entity_Type_Label: quon_bathy_pts
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- Attribute_Label: FID
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- Attribute_Label: utm83E
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- Attribute_Label: elev_NAVD8
- Attribute_Definition: elevation or depth in feet
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- Address: University of Rhode Island
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Generated by mp version 2.8.6 on Fri May 23 11:43:53 2008