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 H13930 Locality: Long Island Sound Sublocality: Six Mile Reef State(s) or Region(s): Connecticut Start Date: 2024-07-07 End Date: 2024-09-27 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 H13930
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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.
H13930_DR.pdf	0.74MB	The document may be read using a free Adobe Reader.
H13930_DR.xml	45.0KB	Descriptive Report in XML format. May be opened using a web browser or text viewer.
NOAA/NOS ISO metadata record
H13930 View / Download H13930.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.
H13930_MB_4m_MLLW_3of3.bag	2.18MB
H13930_MB_2m_MLLW_2of3.bag	124.51MB
H13930_MB_1m_MLLW_1of3.bag	128.41MB
Ellipsoid Referenced BAG Files
Ellipsoid referenced Bag files have a vertical datum that may differ materially from the charted datum. Please refer to the file level metadata to ensure proper display.
H13930_MB_1m_Ellipsoid_1of3.bag	124.62MB
H13930_MB_2m_Ellipsoid_2of3.bag	121.85MB
H13930_MB_4m_Ellipsoid_3of3.bag	2.14MB

Images

GeoImagePDF
H13930_GeoImage.pdf	20.60MB	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.
H13930_MBAB_2m_400kHz_1of1.tif	43.91MB	NOAA/NOS TIFF multibeam acoustic backscatter mosaic survey image.

Bottom Samples and Tide Documents

NOAA/NOS bottom sample document in PDF or ASC format
H13930_BottomSamples.ascii	0.7KB	NOAA/NOS bottom sample document in PDF or ASC format.
Zip file containing bottom sample images and a shapefile of their locations
H13930_BottomSamples_shp_images.zip	3.17MB	Images may be viewed as standalone products or the shapefile can also be used to display where the images were taken.

Project Documents

Data Acquisition and Processing Report in PDF format
OPR-B342-KR-24_DAPR.pdf	38.95MB	This document may be read using a free Adobe Reader.
Horizontal and Vertical Control Report in PDF Format
OPR-B342-KR-24_HVCR.pdf	1.42MB	This document may be read using a free Adobe Reader.

Survey Metadata

Survey Summary

Locality Sublocality State or Region Long Island Sound Six Mile Reef Connecticut

Start Date End Date Approval Date 2024-07-07 2024-09-27 2024-12-06

Project Number Project Name Purpose OPR-B342-KR-24

Source of Original Data and License Information

License Information These data were produced under contract with NOAA and any potential copyright was assigned to NOAA. 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 (2011) Projected UTM 18 10000

Affected Products

ENCs RNCs US5NY2HD US5CT1DR US5CT1DQ US5CT1DP US5CT1DO US5CT1CO

Junction Surveys H13928 H13927

Survey Equipment

Vessel(s) Chief(s) of Party RV West Cove II RV North Cove RV South Cove John R. Bean

Manufacturer Model Instrument Type AML Oceanographic AML-3 LGR Conductivity, Temperature, and Depth Sensor Teledyne RESON SeaBat T50-R MBES AML Oceanographic Micro SV-Xchange Sound Speed System Trimble NetR9 Positioning System Applanix POS MV 320 v5 Positioning and Attitude System

Source Data at NCEI

Data in Archive Size (in GB) Date Archived Data Types Surveyed Raw and Processed 394.935 2025-05-07 02:05:45.0 BACKSCATTER, BATHYMETRY