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 H12509 Locality: Eastern Long Island Sound Sublocality: Long Rock to Duck Island State(s) or Region(s): Connecticut Start Date: 2014-07-30 End Date: 2014-11-09 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 H12509
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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.
H12509_DR.pdf	19.48MB	The document may be read using a free Adobe Reader.
H12509_DR.xml	36.9KB	Descriptive Report in XML format. May be opened using a web browser or text viewer.
NOAA/NOS ISO metadata record
H12509 View / Download H12509.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.
H12509_MB_50cm_MLLW_1of2.bag	627.27MB
H12509_MB_1m_MLLW_2of2.bag	191.17MB
H12509_MB_1m_MLLW_combined.bag	179.55MB
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.
H12509		XYZ format.

Images

GeoImagePDF
H12509_GeoImage.pdf	89.05MB	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
H12509_SSSAB_1m_400kHz_2of2.tiff	38.95MB	NOAA/NOS TIFF sidescan sonar mosaic survey image. The mosaic may be viewed with a standard image viewer.
H12509_SSSAB_1m_400kHz_1of2.tiff	43.56MB	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.
H12509_MBAB_2m_S3002_300kHz_1of1.tiff	9.84MB	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 H12509 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
H12509_BottomSamples.ascii	2.0KB	NOAA/NOS bottom sample document in PDF or ASC format.
NOAA/NOS Tide Note in PDF Format
H12509_tn.pdf	85.3KB	This document may be read using a free Adobe Reader.
NOAA/NOS Tide Zone in PDF format
H12509_tz.pdf	254.9KB	This document may be read using a free Adobe Reader.

Project Documents

Data Acquisition and Processing Report in PDF format
OPR-B370-NRT5-14_DAPR.pdf	0.90MB	This document may be read using a free Adobe Reader.

Survey Metadata

Survey Summary

Locality Sublocality State or Region Eastern Long Island Sound Long Rock to Duck Island Connecticut

Start Date End Date Approval Date 2014-07-30 2014-11-09 2016-03-14

Project Number Project Name Purpose OPR-B370-NRT5-14

Source of Original Data

Link to Original Data Data Source

Reference System Information

Vertical Datum Horizontal Datum Projection Scale Mean Lower Low Water North American Datum 1983 Projected UTM 18 10000

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

Affected Products

ENCs RNCs US5CN30M US5CN20M US5CN16M 12375 12374 12372

Junction Surveys H12510 H12508

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 226.876 2020-09-17 18:20:40.0 BACKSCATTER, BATHYMETRY