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 H12508 Locality: North Shore of Long Island Sound Sublocality: Saybrook Outer Bar to Salt Works Bay State(s) or Region(s): Connecticut Start Date: 2013-07-30 End Date: 2014-05-29 These data are not to be used for navigation. For navigation please refer to NOS Nautical Charts. Download times vary depending on file size and data transfer rates. Download All Products for H12508
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Survey Products

Descriptive Report and Metadata Documents

NOAA/NOS Descriptive Reports and Metadata Documents
Products listed in these reports may not reflect final products available through NCEI.
H12508_DR.pdf	4.98MB	The document may be read using a free Adobe Reader.
H12508_DR.xml	42.2KB	Descriptive Report in XML format. May be opened using a web browser or text viewer.
NOAA/NOS ISO metadata record
H12508 View / Download H12508.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.
H12508_MB_2m_MLLW_2of2.bag	5.92MB
H12508_MB_2m_MLLW_combined.bag	48.42MB
H12508_MB_1m_MLLW_1of2.bag	166.89MB
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.
H12508		XYZ format.

Images

GeoImagePDF
H12508_GeoImage.pdf	29.77MB	NOAA/NOS Layered GeoSpatial Image PDF File. Created by NOS to include chart and survey layers in a georeferenced pdf format.
NOAA/NOS sidescan sonar mosaic in TIFF format
H12508_SSSAB_1m_400kHz_1of2.tif	28.78MB	NOAA/NOS TIFF sidescan sonar mosaic survey image. The mosaic may be viewed with a standard image viewer.
H12508_SSSAB_1m_400kHz_2of2.tif	28.58MB	NOAA/NOS TIFF sidescan sonar mosaic survey image. The mosaic may be viewed with a standard image viewer.
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.
H12508_MBAB_1m_S3002_300kHz_1of1.tiff	25.63MB	NOAA/NOS TIFF multibeam acoustic backscatter mosaic survey image.

Bottom Samples and Tide Documents

NOAA/NOS bottom sample document in PDF or ASC format
H12508_BottomSamples.ascii	1.6KB	NOAA/NOS bottom sample document in PDF or ASC format.
NOAA/NOS Tide Note in PDF Format
H12508_tn.pdf	56.1KB	This document may be read using a free Adobe Reader.
NOAA/NOS Tide Zone in PDF format
H12508_tz.pdf	172.4KB	This document may be read using a free Adobe Reader.

Project Documents

Project Sketch in JPEG format
H12508_ProjectSketch.jpg	108.7KB	Project sketch image with highlighted survey area.

Survey Metadata

Survey Summary

Locality Sublocality State or Region North Shore of Long Island Sound Saybrook Outer Bar to Salt Works Bay Connecticut

Start Date End Date Approval Date 2013-07-30 2014-05-29 2014-11-24

Project Number Project Name Purpose OPR-B370-NRT5-13

Source of Original Data and License Information

License Information These data were produced by NOAA and are in the public domain within the United States. NOAA waives any potential copyright and related rights in these data worldwide through the 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 18 10000

Survey Tide Stations COOPS Tide Station ID New London, Connecticut 8461490 New Haven, Connecticut 8465705

Affected Products

ENCs RNCs US5CN30M US5CN16M 12375 12374

Junction Surveys H12013 H12012 H11361

Survey Equipment

Vessel(s) Chief(s) of Party NOAA SeaArk Launch S3002 LTJG Andrew R. Clos, NOAA

Manufacturer Model Instrument Type Kongsberg Maritime EM 3002 MBES

Source Data at NCEI

Data in Archive Size (in GB) Date Archived Data Types Surveyed Raw and Processed 334.842 2020-09-17 16:24:31.0 BACKSCATTER, SIDE SCAN, BATHYMETRY