NOAA > NESDIS > NCEI (formerly NGDC) > Marine Geology and Geophysics > Bathymetry & Relief privacy policy  All Bathy/Relief Coastal DEMs Fishing Global Lakes Multibeam NOS

Report for W00244 Locality: Approaches to Portsmouth Sublocality: Vicinity of Gerrish Island and York Harbor State(s) or Region(s): Maine Start Date: 2012-06-05 End Date: 2012-06-22 These data are not to be used for navigation. For navigation please refer to NOS Nautical Charts. Downloads may take a long time, depending on file size and data transfer rates. Download All Products for W00244
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Survey Products

Descriptive Report and Metadata Documents

NOAA/NOS Descriptive Report
Products listed in the project descriptive report (DR) may not reflect final products available through NCEI.
W00244.pdf	13.28MB	The document may be read using a free Adobe Reader.
NOAA/NOS ISO metadata record
W00244 View / Download W00244.xml		Usually presented as an XML document, which captures the basic characteristics of HSMDB metadata verified from H10000 (1982) to the present as well as F00200 (1965) to the present.

Bathymetry

Survey products may use different units, datums or projections than the associated survey. Please consult product-specific metadata for additional details.
Bathymetric Attributed Grid (BAG) Data
The BAG format is a gridded, multi-dimensional bathymetric data file (see Open Navigation Surface). Readable with various applications such as the free CARIS Easy View, ESRI ArcGIS or open source GDAL. The BAGXYZ files are ascii representations of the BAG data in XYZ format, but do not include uncertainty.
W00244_MB_1m_MLLW_combined.bag	90.93MB
W00244_MB_50cm_MLLW_1of2.bag	218.61MB
W00244_MB_1m_MLLW_2of2.bag	49.03MB
NOAA/NOS Sounding Data
Download data from the Point Store database via NEXT (NCEI Extract System). Point soundings are from the survey Smooth Sheet or of similar density. Depths in meters. Horizontal datum is (converted to) NAD83 if possible. Vertical datum is (converted to) Mean Lower Low Water if possible. Please check the associated metadata to confirm the correct datums. The data file format is : SurveyID, Long, Lat, Depth.
W00244		XYZ format.

Images

GeoImagePDF
W00244_GeoImage.pdf	23.48MB	NOAA/NOS Layered GeoSpatial Image PDF File. Created by NOS to include chart and survey layers in a georeferenced pdf format.
NOAA/NOS multibeam acoustic backscatter mosaic in TIFF format
The multibeam acoustic backscatter mosaic is readable with various applications such as the free CARIS Easy View, or ESRI ArcGIS geospatial visualization software.
W00244_MBAB_6m_CoastalSurveyor_300kHz_1of1.tiff	0.92MB	NOAA/NOS TIFF multibeam acoustic backscatter mosaic survey image.
W00244_MBAB_6m_CoastalSurveyor_300kHz_1of1.tfw	91 Bytes	NOAA/NOS TIFF multibeam acoustic backscatter mosaic survey image.

Bottom Samples and Tide Documents

Bottom Sample Data
NOAA/NOS bottom sample listing in IMLGS (pre-1989)
Link to W00244 in IMLGS (pre-1989 samples)		Search NOAA/NOS seabed samples submitted to IMLGS through NMNH (pre-1989). Modern survey bottom samples are not currently viewable on a map service.
NOAA/NOS bottom sample document in PDF or ASC format
W00244_TABLE.pdf	111.2KB	NOAA/NOS bottom sample document in PDF or ASC format.
W00244_BottomSamples.ascii	1.4KB	NOAA/NOS bottom sample document in PDF or ASC format.
NOAA/NOS Tide Note in PDF Format
W00244.tn.pdf	50.0KB	This document may be read using a free Adobe Reader.
NOAA/NOS Tide Zone in PDF format
W00244.tz.pdf	121.8KB	This document may be read using a free Adobe Reader.

Project Documents

Project Sketch in JPEG format
OSD-AHB-12(W00244).jpg	173.0KB	Project sketch image with highlighted survey area.

Survey Metadata

Survey Summary

Locality Sublocality State or Region Approaches to Portsmouth Vicinity of Gerrish Island and York Harbor Maine

Start Date End Date Approval Date 2012-06-05 2012-06-22 2013-05-31

Project Number Project Name Purpose OSD-AHB-12 Outside Source Data Surveys - 2012 Update Nautical Chart(s)

Source of Original Data and License Information

License Information This data is licensed under a Creative Commons Zero 1.0 Universal Public Domain Dedication (CC0-1.0). View the license deed. View the legal code.

Reference System Information

Vertical Datum Horizontal Datum Projection Scale Mean Lower Low Water North American Datum 1983 Projected UTM 19 10000

Survey Tide Stations COOPS Tide Station ID Fort Point, New Hampshire 8423898

Affected Products

ENCs RNCs 13286 13283 13278 13274 13260 13009 13006 13003

Junction Surveys W00178

Survey Equipment

Vessel(s) Chief(s) of Party R/V COASTAL SURVEYOR Semme Dijkstra, UNH

Manufacturer Model Instrument Type AML Smart X SVP Sound Velocity Probe AML Minos X SVP Sensor Sound Velocity Probe Trimble 5700 DGPS Receiver Satellite DGPS Trimble DSM212H DGPS Receiver Satellite DGPS Simrad EM2040 MBES Applanix TSS POS/MV 320 GPS Receiver Satellite GPS

Source Data at NCEI

Data in Archive Size (in GB) Date Archived Data Types Surveyed Raw and Processed 76.752 2013-06-24 BACKSCATTER, BATHYMETRY